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The [[Qur'an|Quran]] has a particular conception of the nature of mountains, their formation, and the geological role they play that is is referenced in multiple verses and several [[Hadith|hadiths]]. In recent times, many Islamic scholars have argued that this conception is both scientifically sound and and instance of [[Scientific Miracles in the Quran|miraculous scientific foreknowledge]] on the part of the Quran which, they argue, could not have arrived at the conception it holds without divine insight. Individuals key to the popularization of this idea include the [[Apologists|apologists]] I. A. Ibrahim and [[Zakir Naik]], Professor Zaghloul Raghib El Naggar (a geologist specializing in biostratification), and the Saudi-financed surgeon [[Bucailleism|Dr. Maurice Bucaille]].
The [[Qur'an|Quran]] has a particular conception of the nature of mountains, their formation, and the geological role they play that is is referenced in multiple verses and several [[Hadith|hadiths]]. In recent times, many Islamic scholars have argued that this conception is both scientifically sound and and instance of [[Scientific Miracles in the Quran|miraculous scientific foreknowledge]] on the part of the Quran which, they argue, could not have arrived at the conception it holds without divine insight. Individuals key to the popularization of this idea include the [[Apologists|apologists]] [[Zakir Naik]] and the Saudi-financed surgeon [[Bucailleism|Dr. Maurice Bucaille]].


Parties advocating the description of mountains found in the Quran as a scientific miracle identify two key claims made in the scripture: (1) that Mountains can be described as 'pegs' and (2) that mountains play some role in 'stabilizing the Earth' - these two ideas, advocates hold, are evidence of a miraculous scientific insight. Critics challenge the advocates' interpretations of the relevant verses as well as their use and presentation of scientific information on the topic. Critics further claim that the Qur'an is scientifically inaccurate in its description of a specific time period in which mountains were supposedly formed and Allah having cast them into the earth.
Parties advocating the description of mountains found in the Quran as a scientific miracle identify two key claims made in the scripture: (1) that Mountains can be described as 'pegs' and (2) that mountains play some role in 'stabilizing the Earth' - these two ideas, advocates hold, are evidence of a miraculous scientific insight. Critics challenge the advocates' interpretations of the relevant verses as well as their use and presentation of scientific information on the topic, arguing instead that the Quran is erroneous in these respects. Critics further claim that the Qur'an is scientifically inaccurate in its description a specific time period in which mountains were supposedly formed and Allah having cast them into the earth.


==Formation of mountains in the Quran==
==Formation of mountains in the Quran==
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{{Quote|{{Quran-range|41|8|11}}|Say, "Do you indeed disbelieve in He who created the earth in two days and attribute to Him equals? That is the Lord of the worlds." And He placed on the earth firmly set mountains over its surface, and He blessed it and determined therein its [creatures'] sustenance in four days without distinction - for [the information] of those who ask. Then He directed Himself to the heaven while it was smoke and said to it and to the earth, "Come [into being], willingly or by compulsion." They said, "We have come willingly." And He completed them as seven heavens within two days and inspired in each heaven its command. And We adorned the nearest heaven with lamps and as protection. That is the determination of the Exalted in Might, the Knowing.}}
{{Quote|{{Quran-range|41|8|11}}|Say, "Do you indeed disbelieve in He who created the earth in two days and attribute to Him equals? That is the Lord of the worlds." And He placed on the earth firmly set mountains over its surface, and He blessed it and determined therein its [creatures'] sustenance in four days without distinction - for [the information] of those who ask. Then He directed Himself to the heaven while it was smoke and said to it and to the earth, "Come [into being], willingly or by compulsion." They said, "We have come willingly." And He completed them as seven heavens within two days and inspired in each heaven its command. And We adorned the nearest heaven with lamps and as protection. That is the determination of the Exalted in Might, the Knowing.}}


The above verses are the Quranic six day creation account. In this description, mountains are created within a four day period (which is usually understood to overlap with the first two day period mentioned in the creation account). Critics note that rather than being confined to a closed period, mountain formation began early in Earth's history due to the process of [[w:Plate techtonics|plate tectonics]] (with accompanying earthquakes), has continued for billions of years, and continues to do so now and into the future. With each plate collision mountains keep on rising higher little by little. And when the plates start to move away from each other, then these mountains start to erode until after millions of years, they completely disappear. On a geological timescale, mountains are not "firmly set", but rather they rise and fall, and are replaced by other mountain ranges over time. For example, there existed no Mount Everest 250 million years ago. The Himilayan mountain range began to grow when two continental plates collided, which will eventually separate again and Everest will gradually erode and disappear completely.  
The above verses are the Quranic six day creation account. In this description, mountains are created within a four day period (which is usually understood to overlap with the first two day period mentioned in the creation account). Critics note that rather than being confined to a closed period, mountain formation began early in Earth's history due to the process of [[w:Plate techtonics|plate tectonics]] (with accompanying earthquakes), has continued for billions of years, and continues to do so now and into the future. With each plate collision mountains keep on rising higher little by little. And when the plates start to move away from each other, then these mountains start to erode until after millions of years, they completely disappear. On a geological timescale, mountains are not "firmly set", but rather they rise and fall, and are replaced by other mountain ranges over time. For example, there existed no Mount Everest 250 million years ago. The Himalayan mountain range began to grow when two continental plates collided, which will eventually separate again and Everest will gradually erode and disappear completely.<ref>[https://www.britannica.com/science/mountain-landform/Tectonic-processes-that-create-and-destroy-mountain-belts-and-their-components Tectonic processes that create and destroy mountain belts and their components] - Britannica.com</ref>
 
Moreover, there are other type of mountains too, which are formed when Lava comes out from inside the earth. When this lava cools down, it forms high and big mountains, which are known as [http://www.universetoday.com/29833/how-mountains-are-formed/ volcanic mountains].


It is also worth noting that in {{Muslim|39|6707}}, Muhammad elaborates that mountains were created on the second day (Sunday), which is even more specific. Other hadiths quoted by Ibn Kathir in his exegesis for {{Quran|22|47}} ("a day with your Lord is like a thousand years") reported Ibn 'Abbas as stating that each of the six days in which Allah created the heavens and the earth was a thousand years.<ref>Ibn Kathir writes under the commentary of this verse 22:47:
It is also worth noting that in {{Muslim|39|6707}}, Muhammad elaborates that mountains were created on the second day (Sunday), which is even more specific. Other hadiths quoted by Ibn Kathir in his exegesis for {{Quran|22|47}} ("a day with your Lord is like a thousand years") reported Ibn 'Abbas as stating that each of the six days in which Allah created the heavens and the earth was a thousand years.<ref>Ibn Kathir writes under the commentary of this verse 22:47:
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Rasool Allah told that the poor people will enter in the paradise half a day before the rich people, '''means 500 years before the rich people (while whole day is equal to 1000 years of people's reckoning)'''. al-Tirmidhi and al-Nisai etc recorded it and al-Tirmidhi said that this tradition is 'Hasan Sahih' (i.e. authentic according to al-Tirmidhi). In another tradition, it was asked from Abu Hurayrah, '''how long is this half day'''? He replied: "Didn't you read Quran?" I said: "Yes." '''Upon that he recited me verse 22:47''' ... Companion S'ad was asked: "'''How long is this half day'''." He replied: "'''500 years'''". Ibn Abbas recited this verse and said that '''this is the length of those 6 days, in which Allah created the heavens and the earth''' (Ibn Jarir). While Imam Ahmed bin Hanbal described it in more clear words in his book "Refutation of al-Jahmia". Mujjahid said that this verse is similar to verse  5 of Surah al-Sajdah [(Quran 32:5) He rules (all) affairs from the heavens to the earth: in the end will (all affairs) go up to Him, '''on a Day, the space whereof will be (as) a thousand years of your reckoning.''']}}</ref> On this basis (and the similar verse {{Quran|70|4}} about fifty thousand years), advocates argue that "day" (yawm) should not be taken literally. Critics argue that this is a sythesis not apparent in the creation account itself, and in any case 1000 or 50000 years would not indicate that the author was aware of the sheer scale of geological and cosmological time (billions of years).
Rasool Allah told that the poor people will enter in the paradise half a day before the rich people, '''means 500 years before the rich people (while whole day is equal to 1000 years of people's reckoning)'''. al-Tirmidhi and al-Nisai etc recorded it and al-Tirmidhi said that this tradition is 'Hasan Sahih' (i.e. authentic according to al-Tirmidhi). In another tradition, it was asked from Abu Hurayrah, '''how long is this half day'''? He replied: "Didn't you read Quran?" I said: "Yes." '''Upon that he recited me verse 22:47''' ... Companion S'ad was asked: "'''How long is this half day'''." He replied: "'''500 years'''". Ibn Abbas recited this verse and said that '''this is the length of those 6 days, in which Allah created the heavens and the earth''' (Ibn Jarir). While Imam Ahmed bin Hanbal described it in more clear words in his book "Refutation of al-Jahmia". Mujjahid said that this verse is similar to verse  5 of Surah al-Sajdah [(Quran 32:5) He rules (all) affairs from the heavens to the earth: in the end will (all affairs) go up to Him, '''on a Day, the space whereof will be (as) a thousand years of your reckoning.''']}}</ref> On this basis (and the similar verse {{Quran|70|4}} about fifty thousand years), advocates argue that "day" (yawm) should not be taken literally. Critics argue that this is a synthesis not apparent in the creation account itself, and in any case 1000 or 50000 years would not indicate that the author was aware of the sheer scale of geological and cosmological time (billions of years).


===Casting mountains into the earth===
===Casting mountains into the earth===
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The Quran states that the mountains on Earth's surface were cast upon it by God. The imagery is clear when one considers the verse discussed further below which describe the mountains as 'pegs'.
The Quran states that the mountains on Earth's surface were cast upon it by God. The imagery is clear when one considers the verse discussed further below which describe the mountains as 'pegs'.


{{Quote|{{Quran|16|15}}|
{{Quote|{{Quran|16|15}}|And He has cast into the earth firmly set mountains, lest it shift with you, and [made] rivers and roads, that you may be guided,}}
And He has cast into the earth firmly set mountains, lest it shift with you, and [made] rivers and roads, that you may be guided,}}
 
The word 'he has cast' is ''alqā'' (from the root lam-qaf-ya), which in this form (Arabic verb form IV) is frequently used elsewhere in the Quran to mean throw or cast.<ref>alqā أَلْقَىٰ - [http://www.studyquran.org/LaneLexicon/Volume8/00000266.pdf Lane's Lexicon, Suppliment p. 3012]<BR />See paragraph number 4 for the form IV verb definition.</ref> It is the same word as is used in {{Quran|3|44}} when lots are cast using pens (it would be easy to imagine that mountains were similarly scattered, though perhaps should not be taken too literally in this context), and {{Quran|12|10}} when the prophet Yusuf is cast down into the well, and in {{Quran|20|20}} when Moses casts down his staff, which becomes a snake.
 
The other verses using alqā in the context of mountains are {{Quran|15|19}} and {{Quran|50|7}} which both begin with "And the earth - We spread it out and cast therein firmly set mountains..." and {{Quran|31|10}} "He created the heavens without pillars that you see and has cast into the earth firmly set mountains, lest it should shift with you, and dispersed therein from every creature. And We sent down rain from the sky and made grow therein [plants] of every noble kind." In all of these verses the words "firmly set mountains" is rawāsiya in the Arabic text. This word for mountains is from the same Arabic root as words meaning firmly set, steadfast, anchored or anchors.<ref name="LexiconRawaasiya">Rawās رَوَاس - [http://www.studyquran.org/LaneLexicon/Volume3/00000253.pdf Lane's Lexicon] page 1087</ref> Perhaps the connection with anchors is intended as part of a poetic picture alongside the verb alqā meaning casting or throwing.


The word 'he has cast' is ''alqa'' (lam-qaf-ya), which in this form (Arabic verb form IV) is frequently used elsewhere in the Quran to mean throw or cast. It is the same word as is used in {{Quran|3|44}} when lots are cast using pens (it would be easy to imagine that mountains were similarly scattered), and {{Quran|12|10}} when the prophet Yusuf is cast down into the well, and in {{Quran|20|20}} when Moses casts down his staff, which becomes a snake.<ref>[http://www.studyquran.org/LaneLexicon/Volume8/00000266.pdf Lane's Lexicon, Suppliment p. 3012 أَلْقَىٰ]</ref>
A very similar verse to {{Quran|16|15}} quoted above is {{Quran|21|31}}, which instead of alqā uses the verb jaʿala ([https://quranx.com/Analysis/Root/jim-ayn-lam made or placed])<ref>jaʿala جعل  - [http://www.studyquran.org/LaneLexicon/Volume2/00000066.pdf Lane's Lexicon page 430]</ref>. See also {{Quran|27|61}} where Allah is said to have made (jaʿala) the earth an abode, and made (jaʿala) in its midst rivers and firmly set mountains, and a barrier between the two seas.  Jaʿala is also used in the statement about mountains as pegs discussed in the next section below ({{Quran-range|78|6|7}}) and which uses another word for mountains, jibāla.


Again, mountain formation is described in this verse only as a past event, rather than an ongoing process. Furthermore, according to modern science, mountains are not 'placed'/'cast' over earth's surface, but they are formed when two plates collide with each other (and earthquakes take place), then the crust of one plate goes upwards and forms a mountain, while the crust of the other plate goes downwards.  
Again, mountain formation is described in all these verses only as a past event. However, according to modern science, mountains were not placed or cast into the earth's surface, but rather they are byproducts of an ongoing process driven by [[w:Plate tectionics|plate tectonics]] in which continental and oceanic crust plates slowly move over time, driven by 1) mantle convection currents, 2) by ridge push as buoyant magma upwells at oceanic ridges, and 3) by slab pull, as the leading edges of plates sink at subduction zones, cooling and pulling the rest of the plate behind. A number of processes can result in the gradual formation and disappearance of mountain ranges (often accompanied by earthquakes). Such processes include when the collision of two continental plates results in a thickening of the crust, or when an oceanic plate subducts underneath a continental plate, resulting in volcanic mountain formation and an accretionary wedge, or mountains formed by fault blocks or tilted block faulting (see illustrations below). Eventually, erosion causes the mountain range to disappear as has happened many times over the eons. The implication of the Quranic verses are instead that Allah cast or placed mountains by special creation in certain locations rather them being a byproduct of a larger ongoing process (tectonic movements).


Some critics also note that in another verse, {{Quran|41|9}} discussed above, Allah placed on the earth mountains "from above it" (min fawqiha من فوقها), though almost all major translations interpret the Arabic simply to mean the mountains are above the earth's surface (both interpretations seem possible based on how the preposition and verb are used in some other verses).
Some critics also note that in another verse, {{Quran|41|10}} discussed above, Allah placed (jaʿala) on the earth mountains "from above it" (min fawqiha من فوقها), though almost all major translations interpret the Arabic simply to mean the mountains are above the earth's surface. Either interpretation seems possible based on how the preposition with noun are used in [https://quranx.com/Analysis/Root/fa-waw-gaf some other verses] - see for example {{Quran|6|65}}, {{Quran|29|55}} or {{Quran|33|10}}, though on the other hand {{Quran|39|16}} and {{Quran|39|20}}.


==Mountains as pegs==
==Mountains as pegs==
The Quran makes a claim about mountains in general - that they are made as pegs or stakes. This is stated in the context of the Earth as a wide expanse (''mihadan'' مِهَٰدًا (same as مَهْدًا mahdan in the similar verses {{Quran|20|53}} and {{Quran|43|10}}), which means a cradle or bed; a plain, even, or smooth expanse.<ref>مَهْدً mahdan - [http://www.studyquran.org/LaneLexicon/Volume7/00000267.pdf Lane's Lexicon] page 2739</ref>).


{{Quote|{{Quran-range|78|6|7}}|Have We not made the earth as a wide expanse, And the mountains as pegs?}}
{{Quote|{{Quran-range|78|6|7}}|Have We not made the earth as a wide expanse, And the mountains as pegs?}}


The above verse uses the word awtādan, which means pegs or stakes placed in the ground<ref>awtādan [http://www.studyquran.org/LaneLexicon/Volume8/00000171.pdf Lane's Lexicon] p. 2917</ref> and also occurs in reference to Pharaoh's stakes for crucifixion in {{Quran|38|12}} and {{Quran|89|10}}.
The word for mountains in this case is jibāla and the word translated as pegs is awtādan, which means pegs or stakes placed in the ground<ref>awtādan [http://www.studyquran.org/LaneLexicon/Volume8/00000171.pdf Lane's Lexicon] p. 2917</ref> It also occurs in reference to Pharaoh's "stakes" in {{Quran|38|12}} and {{Quran|89|10}}, sometimes related in exegesis to the crucifixions he is said to have ordered in other verses, though the preceding context around the latter of those two verses makes clear that there l-awtād refers to some kind of lasting rock-hewn monuments.
 
See also {{Quran|15|19}}, {{Quran|16|15}}, {{quran|21|31}} and {{Quran|31|10}} (discussed further below in the context of stabilising the earth) which all mention Allah casting rawaasiya (steadfast, immovable, anchors, i.e. mountains)<ref name="LexiconRawaasiya" /> in the earth. Critics would reiterate here that mountains do move over geological time.
 
An important observation is that the verse is phrased as a question: "Have We not made [...] the mountains as pegs?". Therefore, the author is referring to a concept which he assumes even the Quran's initial audience will understand.
 
===Earth anchored by mountains from tipping over in pre-Islamic poetry===
The pre-Islamic poet commonly known as al-Muhalhil, "The poem weaver", whose name was Abu Layla Adi ibn Rabi'ah at-Taghlabi (d. 531 CE), composed a number of famous poems. In his PhD thesis on pre-Islamic poetry before Imru al Qays, Dr Abdullah al-Udhari writes:
 
{{Quote|1=Abdullah al-Udhari, "Jahili Poetry before Imru al-Qais"<ref>Poetry by al-Muhalhil quoted in Abdullah al-Udhari (1991) [https://eprints.soas.ac.uk/28750/1/10672918.pdf Jahili Poetry before Imru al-Qais (4000 BCE–500 CE)] ([https://web.archive.org/web/20230311152446/https://eprints.soas.ac.uk/28750/1/10672918.pdf archive]), PhD thesis, London School of Oriental and African Studies, pp. 151-2 (his source for the poem, given in footnote 1, p. 255 with expanded reference on p. 296, is al-Balkhī (Abū Zaid Aḥmad b. Sahl), Kitāb al-Bad' wa al-Tārīkh, I) ed. Huart, Editions Earnest Leroux, 1899-1919 pp. 149-50)</ref><ref>The last poem he quotes from al-Muhalhil can be seen in full at https://poetsgate.com/poem.php?pm=27780</ref>|2=The poetry of Muhalhil is significant for several reasons [...] Secondly, it alludes to the mythological tradition of the Jāhilīs who believed that heaven and earth were separated by still waters [...] Thirdly, it tells us that the earth, which was floating in the wind, was pegged down by the mountains Allāh created from the waves:<BR />
نعى النعاة كليبا لي فقلت لهم مادت بنا الأرض أم مادت رواسيها
ليت السماء على من تحتها وقعت وحالت الأرض فانجابت بمن فيها}}
 
The above quoted extract uses the word rawāsiya (firmly set mountains) which occurs also in some Quranic verses, a word whose root has an association with anchoring and anchors as discussed above.<ref name="LexiconRawaasiya" /> This poem which mentions mountains is also available in full [https://poetsgate.com/poem.php?pm=27780 here]. In al-Muhalhil's poem, it is the earth in its entirety whose firmly set mountains prevent it from tipping over as if it had died, which is strongly indicative for the most straightforward reading of the equivalent Quranic verses i.e that they refer to the earth as a whole. It is also indicative for the meaning of verses about mountains being cast into the earth lest it shake (or sway), as discussed in the section further below on the alleged role of mountains preventing earthquakes in one interpretation.
 
Also perhaps relevant is a poem about the creation of a flat earth attributed to the pre-Islamic poet Zayd b. 'Amr, who reportedly was a monotheist who met Muhammad before his prophetic career began. The poem is recorded in the biography of Muhammad by Ibn Ishaq (d. 767 CE) and must pre-date that work.<ref name="Guillaume102">Guillaume, A., The Life of Muhammad, London: Oxford University Press, 1955, p. 102</ref> Much like {{Quran-range|79|27|33}}, the poem says "He spread it out" (daḥāhā<ref>دحو dahawa - [http://www.studyquran.org/LaneLexicon/Volume3/00000023.pdf Lane's Lexicon] page 857</ref>) i.e. the earth, then even clearer than the Quran, saw that it was level (استوت istawat<ref>استوت istawat - [http://www.studyquran.org/LaneLexicon/Volume4/00000201.pdf Lane's Lexicon] p. 1477</ref>) on the water (i.e. flat), "and set firm the mountains on it" (arsā ʿalayhā l-jibālā, very similar to wa-l-jibāla ʾarsāhā in verse 79:32 of the Quranic passage).
 
{{Quote|1=Poem attributed to Zayd b. 'Amr, as found for example in Ibn Al Jawzi's Al Muntazam,<ref name="IbnalJawzi">https://shamela.ws/book/12406/736</ref> and Ibn Ishaq's biography of Muhammad (as translated from Ibn Ishaq by Guillaume<ref name="Guillaume102" /> and transliterated by Bravmann<ref name="Bravmann">Bravmann, M. M. (1977) Studies in Semitic Philology, Leiden: Brill p.439</ref>)|2=دحاها فلما رآها استوت ... عَلَى الماء أرسى عليها الجبالا


See also {{Quran|15|19}}, {{Quran|16|15}}, {{quran|21|31}} and {{Quran|31|10}} (discussed further below in the context of stabilising the earth) which all mention Allah casting rawaasiya (steadfast, immovable, anchors, i.e. mountains)<ref name="LexiconRawaasiya">rawaasiya [http://www.studyquran.org/LaneLexicon/Volume3/00000253.pdf Lane's Lexicon] p. 1987</ref> in the earth. Critics would reiterate here that mountains do move over geological time.
daḥāhā falammā raʾādā istawat ʿalā l-māʾi arsā ʿalayhā l-jibālā


Critics also point out that unlike pegs which are objects placed into something else, mountains caused by plate tectonics are of continuous material as the surrounding crust, albeit of a different shape due to geological processes. Moreover, they do not peg anything to something else since the underside of mountains merely protrude deeper than the surrounding crust into the Earth's mantle, which is molten and not a solid object.
'''He spread it out''' and when He saw that it was settled upon the waters, He fixed the mountains upon it}}


===Isostasy and mountains as peg-like structures===
 
====Schematic from Cailleux's ''Anatomy of the Earth''====
===Alleged peg-like structure of mountains===
[[File:Ch1-1-b-img2.jpg|alt=|border|thumb|425x425px|''Anatomy of the Earth'' by Cailleux (p. 220)|center]]
[[File:Ch1-1-b-img2.jpg|alt=|border|thumb|425x425px|''Anatomy of the Earth'' by Cailleux (p. 220)|center]]
The schematic diagram taken from page 220 of ''Anatomy of the Earth'' by the French geologist Cailleux is cited by various sources advocating the reality of the proposed miracle.<ref name="A Brief Illustrated Guide to Understanding Islam">[http://www.islam-guide.com/frm-ch1-1-b.htm A Brief Illustrated Guide to Understanding Islam/ B) The Quran on Mountains] - Islam-Guide.com, accessed October 1, 2011</ref> The basic underground protrusion of the crust beneath the mountainous region of the Alps, for instance, appears as a sort of peg embedded in the lower layer of the Earth. This, the advocates suggest, coheres nearly with {{Quran-range|78|6|7}} which reads, “Have We not made the earth as a wide expanse, And the mountains as pegs?”[[File:Anatomy_of_the_Earth-_Cailleux-_p_220.jpg|alt=|thumb|425x425px|Description of figure found on p. 220]]The geological phenomenon observed is known as isostasy. This term describes the nature of the Earth's crust such that the height of the crust above the layer of the Earth immediately beneath the crust tends to be proportionate to the depth of the crust into the lower layer in the same area.  
The schematic diagram taken from page 220 of ''Anatomy of the Earth'' by the French geologist Cailleux is cited by various sources advocating the reality of the proposed miracle.<ref name="A Brief Illustrated Guide to Understanding Islam">[http://www.islam-guide.com/frm-ch1-1-b.htm A Brief Illustrated Guide to Understanding Islam/ B) The Quran on Mountains] - Islam-Guide.com, accessed October 1, 2011</ref> The basic underground protrusion of the crust beneath the mountainous region of the Alps, according to miracle advocates, appears as a sort of peg embedded in the lower layer of the Earth. This, the advocates suggest, coheres with {{Quran-range|78|6|7}} which reads, “Have We not made the earth as a wide expanse, And the mountains as pegs?”[[File:Anatomy_of_the_Earth-_Cailleux-_p_220.jpg|alt=|thumb|425x425px|Description of figure found on p. 220]]The geological phenomenon observed is known as isostasy. This term describes the dynamic by which thickening of the crust results in mountains rising above ground level, compensated for by an increase in the depth of the crust into the lower part of the lithosphere (upper mantle) in the same area, maintaining [[w:Isostasy|isostatic equilibrium]].


Thus, elevation above sea-level tends to correlate positively with the thickness of the Earth's crust at any given place. The reason why the crust tends to exist in this manner is compared to the same physics of floatation whereby the majority of an iceberg suspended in water extends below sea level and, at the same time, it is the case that the taller the portion of ice above sea level, the deeper the iceberg dips down below.  
Thus, elevation above sea-level tends to correlate positively with the thickness of the Earth's crust at any given place. The reason why the crust tends to exist in this manner is compared to the same physics of floatation whereby the majority of an iceberg suspended in water extends below sea level and, at the same time, it is the case that the taller the portion of ice above sea level, the deeper the iceberg dips down below.


Advocates of the scientific miracle argue that isostasy affirms the peg-like nature of mountains and that Muhammad could not, in the 7th century, have come to realize this without divine aid. Critics respond to this by arguing that the caption associated with the diagram found in Cailleux's book explicitly points out that the visual representation has had its 'vertical scale greatly exaggerated'.<ref>Click [[:File:Anatomy of the Earth- Cailleux- pp 220-221.jpg|here]] for a more complete view of the page scan.</ref> As a result, critics argue, the peg-like nature of mountains is not so plainly evident as the exaggerated representation found in the diagram would make it seem. Moreover, the so-called pegs do not attach the crust to anything, but merely protrude into the molten mantle of the earth.
Advocates of the scientific miracle argue that isostasy means that mountains have peg-like structures and that this is what was meant by the Quran.


====Accurate representations of isostasy and exceptions====
Critics respond to this in a number of ways. Firstly, as noted above, the verse itself assumes that its 7th century listeners understand what is meant, so it can hardly be referring to advanced geological concepts: "Have We not made [...] the mountains as pegs?"
Other visual representations with less exaggerated and more accurate vertical scales, some of which are cited by the advocates themselves, do not depict mountains as so plainly resembling pegs.<ref name="A Brief Illustrated Guide to Understanding Islam"></ref> Advocates respond by suggesting that when viewed in this more accurate representation, the mountains resemble 'blunt pegs'; critics disagree. [[File:Ch1-1-b-img1.jpg|alt=|thumb|425x425px|A depiction of isostasy with a more accurate vertical scale|center]][[File:Ch1-1-b-img3.jpg|alt=|thumb|425x425px|Another depiction of isostasy with a more accurate vertical scale|center]]
Critics hold that the 'roots' of the mountains described by isostasy do not resemble pegs in either form or function. For instance, isostasy, while often observed, is by no means universal and there are several outstanding examples of mountains and other elevated geological structures which have no such roots.


Examples include structures formed by the geological processes of extension and faulting, such as the Nevada Basin and Range, as well as those formed thrust and fold belts, such as the Appalachians, Eastern Bolivian Andes, Zagros Mountains, and the Calcareous Alps. Indeed, even the Himalayas are underlaid by a crust structure shaped like a broad wedge and which does not resemble a peg.<ref>Dèzes, Pierre (1999) - [http://comp1.geol.unibas.ch/~zanskar/zanskar_geology.pdf Tectonic and metamorphic Evolution of the Central Himalayan Domain in Southeast Zanskar (Kashmir, India)] - Mémoires de Géologie. Doctoral thesis (Universite de Lausanne) 32: 149. ISSN 1015-3578</ref> The same is true for the Pyrenees.<ref>Jaume Vergés, Manel Fernàndez, Albert Martìnez - [{{Reference archive|1=http://www.virtualexplorer.com.au/article/2002/58/the-pyrenean-orogen/tert.html#figure.08|2=2011-10-02}} The Pyrenean orogen: pre-, syn-, and post-collisional evolution] - Journal of the Virtual Explorer, Electronic Edition, ISSN 1441-8142, volume 8, paper 4, doi:10.3809/jvirtex.2002.00058</ref>
Secondly, they note that the caption associated with the diagram found in Cailleux's book explicitly points out that the visual representation has had its 'vertical scale greatly exaggerated'.<ref>Click [[:File:Anatomy of the Earth- Cailleux- pp 220-221.jpg|here]] for a more complete view of the page scan.</ref> Other visual representations with less exaggerated and more accurate vertical scales, some of which are cited by the advocates themselves, do not depict mountains as in any way resembling pegs.<ref name="A Brief Illustrated Guide to Understanding Islam"></ref>[[File:Ch1-1-b-img1.jpg|alt=|thumb|425x425px|A depiction of isostasy with a more accurate (though still exaggerated) vertical scale|center]]
[[File:Andestru.gif|alt=|thumb|425x425px|center]]
Another important example is the Andes mountain range, whose 'roots', as observed in a true-scale cross-section of the range, do not resemble a peg and which do not serve any 'peg-like' purpose.


====Critical and historical perspectives====
Thirdly, such images represent a cross section of a mountain range, not individual mountains. These crustal root structures (also called mountain roots) occur at the level of entire ranges which can be thousands of kilometres long and only a few tens of kilometers deep. The entire mountain range whose dominant feature is its length protrudes relatively slightly into the upper mantle, unlike a peg whose depth is greater than its width. Some images of actual crustal roots underlying famous mountain ranges are shown below.
Critics conclude that what may at most be said regarding the roots of those mountains that possess them is that they resemble pegs in some minimal metaphorical sense and that it is not the case that all mountains are literal pegs, as described in the Quran, which have been 'cast down' into the earth in order to stabilize it.
[[File:Mountvstree.png|thumb|425x425px|The 'roots' of mountains and the roots of trees are visually similar]]
If the advocates opt to transition to a metaphorical interpretation here, the critics continue, they have made an arbitrary decision, as the relevant scripture appears to take its own description quite literally (as is generally the case with verses in the Quran describing the step-wise creation of the Earth and heavens).


Historians circumvent the debate and simply hold that since there is no reason to believe that Muhammad was receiving revelation from some deity, or even that such a deity exists, Muhammad likely either inferred the existence of some subsurface structure beneath mountains on the basis of basic visual comparisons between the side of a mountain and the bottom of a tree or adapted the beliefs of predecessors who had made such observations before his time.  
Fourthly, critics point out that unlike pegs which are foreign objects placed into something else, mountains caused by plate collisions or faults are of continuous material as the surrounding crust, albeit contorted or faulted into different shapes due to geological processes. Furthermore, plateau mountains (including mesas and buttes) such as those of the Najd Plateau in Saudi Arabia (illustrated below) are caused by the erosion of surrounding material so can hardly be described as having been placed there.


Historians point out, for instance, that the ancient Hebrews held similar ideas regarding the 'roots of mountains'. It is not at all inconceivable and to some extent certain that such ideas had been passed down to and adapted by Muhammad.   
Fifthly, an effect called ''uplift'' maintains the height of mountains for some time even as erosion occurs, by reducing the depth of the crustal root. This is because the thickened subterranean crust is nevertheless buoyant relative to the molten mantle, so it thrusts upwards as erosion lightens the weight above, maintaining isostatic balance and eventually resulting in normal crustal thickness.<ref>Joseph A. DiPietro, ''Geology and Landscape Evolution (Second Edition)'', 2018 quoted at https://www.sciencedirect.com/topics/earth-and-planetary-sciences/crustal-root</ref>
 
Sixthly, some argue that the concept of a subterranean aspect of mountains is found already in the Bible and may in some form have been adopted by Muhammad, if that is indeed the meaning in the Quran.   


{{Quote|1=[http://www.biblegateway.com/passage/?search=Jonah%202:6&version=NIV Jonah 2:6 NIV]|2=To the roots of the mountains I sank down; the earth beneath barred me in forever. But you brought my life up from the pit, O LORD my God.}}
{{Quote|1=[http://www.biblegateway.com/passage/?search=Jonah%202:6&version=NIV Jonah 2:6 NIV]|2=To the roots of the mountains I sank down; the earth beneath barred me in forever. But you brought my life up from the pit, O LORD my God.}}


==Mountains as stabilising the Earth==
====Root structures of some actual mountain ranges====
A number of attempts are commonly made to interpret the following verses in light of modern science.
In the below model of a section of the Ural mountains range based on gravity and seismic data, it can be seen (even despite the exaggerated vertical dimension) that there is nothing peg or stake-like about the crust layer in which isostasy occurs.
 
[[File:Ural_gravity_model.png|alt=|thumb|425x425px|Gravity model of a cross section from part of the Ural mountain range (note the exaggerated vertical dimension) by Ognev et. al. "Satellite gravity gradient data was applied to determine the Moho depth for the area [i.e. the lower boundary of the crust] ... The Moho discontinuity obtained from the gravity inversion was consequently modified and complemented in order to define a complete 3D crustal model by adding information on the sedimentary cover, upper crust, lower crust, and lithospheric mantle layers in the process of forward gravity modelling, where both seismic and gravity constraints were respected."<ref>Ognev, I., Ebbing, J., and Haas, P.: [https://se.copernicus.org/articles/13/431/2022/ Crustal structure of the Volgo–Uralian subcraton revealed by inverse and forward gravity modelling], Solid Earth, 13, 431–448, https://doi.org/10.5194/se-13-431-2022, 2022. (Open access)</ref>|center]]
 
The below crustal cross section of the Alps shows a type of mountain range root formation resulting from subduction during continental crust collision. The present height of the mountains are shown in the solid line slightly above sea level. It is important to note that this is a cross section and continues all along the length of the plate boundary. Hence even with the most generous imagination, this process does not resemble a peg or stake.
[[File:Alps_crustal_cross_section.png|alt=|thumb|425x425px|Cross section illustrating part of the Alps by Moores et al.<ref>Moores, Eldridge & Yıkılmaz, M. & Kellogg, Louise. (2013). [https://www.researchgate.net/publication/284224939_Tectonics_50_Years_after_the_Revolution Tectonics: 50 Years after the Revolution] 10.1130/2013.2500(10). pp. 347-8</ref>|center]]
 
Another example is the Andes mountain range, whose 'roots', as observed in a true-scale cross-section of the range, do not resemble a peg and which do not serve any 'peg-like' purpose.[[File:Andestru.gif|alt=|thumb|425x425px|center]]
 
===Types of mountain without crustal roots===
Besides pointing out that the crustal roots (also called mountain roots) described by isostasy do not resemble pegs in either form or function, critics also point out that isostasy, while often observed, is by no means universal and there are several outstanding examples of mountain ranges and other elevated geological structures which have no such roots.
 
Mountain formation can occur in a number of ways, not all of which involve the formation of crustal roots nor any other structure that can reasonably be claimed to resemble pegs (if any). Mountain formation with crustal thickening can result from a number of processes including folding, thrust faulting, metamorphism, intrusion, and tectonic accretion.<ref>Joseph A. DiPietro, ''Geology and Landscape Evolution (Second Edition)'', 2018 quoted at https://www.sciencedirect.com/topics/earth-and-planetary-sciences/crustal-root</ref> However, other types of mountain formation do not create crustal/mountain roots.
 
'''Fault-block mountains''' (including tilted fault-block mountains, illustrated below) occur when plates move apart and do not form with roots since crust faults do not increase the weight distribution and isostatic balance. The crust thickness is the same before and after their formation. Another type of mountain can be formed when oceanic crust is subducted beneath continental crust. Lava then comes up from inside the earth in repeated volcanic eruptions and falls back down, piling up to form high and big mountains, which are known as [http://www.universetoday.com/29833/how-mountains-are-formed/ '''volcanic mountains'''], and are common in the Arabian peninsula which is itself a minor tectonic plate. Another type of mountain are '''lava domes''' in which magma lifts up the crust but does not erupt. There are also '''plateau mountains''' (including mesas and buttes) in which the surrounding area was eroded away, and chains of hotspot mountains where an oceanic plate has moved across hotspots in the Earth's molten mantle.<ref>https://www.zmescience.com/feature-post/main-types-mountains-earths-ups-downs/</ref>
 
In some situations other mechanisms reduce the role of isostasy in maintaining equilibrium. Professor of Geodesy, Mehdi Eshagh writes:
{{Quote|1=Mehdi Eshagh, Satellite Gravimetry and the Solid Earth, 2021, Chapter 6.6 Non-isostatic equilibriums, p. 308|2=Generally, we can say that in isostasy it is assumed that mountains or loads have roots beneath, this means that the crust is thicker over the mountainous regions than the oceans. However, there are examples showing that the crust is not as thick as isostasy presents under mountains, and, in fact, there are other compensation mechanisms which keep them in equilibrium.<BR />
[...]<BR />
Another example is high lands due to mantle plumes, which in fact the mantle plumes and thermal isostasy keep the mountains in equilibrium partly. Over the high lands having a mantle plume below no roots or small roots for the mountains or high lands exists. In fact these areas are in non-isostatic equilibrium.}}
 
Mountain ranges which in no way resemble pegs include structures formed by the geological processes of extension and faulting, such as the Nevada Basin and Range, as well as those formed by ''fold and thrust belts'', such as the Appalachians, Eastern Bolivian Andes, Zagros Mountains, and the Calcareous Alps. Indeed, even the Himalayas are underlaid by a crust structure shaped like a broad wedge and which does not resemble a peg.<ref>Dèzes, Pierre (1999) - [http://comp1.geol.unibas.ch/~zanskar/zanskar_geology.pdf Tectonic and metamorphic Evolution of the Central Himalayan Domain in Southeast Zanskar (Kashmir, India)] - Mémoires de Géologie. Doctoral thesis (Universite de Lausanne) 32: 149. ISSN 1015-3578</ref> The same is true for the Pyrenees.<ref>Jaume Vergés, Manel Fernàndez, Albert Martìnez - [{{Reference archive|1=http://www.virtualexplorer.com.au/article/2002/58/the-pyrenean-orogen/tert.html#figure.08|2=2011-10-02}} The Pyrenean orogen: pre-, syn-, and post-collisional evolution] - Journal of the Virtual Explorer, Electronic Edition, ISSN 1441-8142, volume 8, paper 4, doi:10.3809/jvirtex.2002.00058</ref>
 
Plateau mountains of the Najd plataeu in Arabia are formed due to their high resistance to erosion processes.<ref>https://www.fawry.news/237353/where-is-the-najd-plateau-located/</ref>
[[File:NajdPlateau.jpg|alt=|thumb|425x425px|center]]
 
Dome mountains like these in Yosemite National Park in the Sierra Navada, USA are formed by magma uplifting the crust without breaking through as volcanoes.<ref>[https://www.universetoday.com/29827/dome-mountains/ Dome Mountains] - Universetoday.com</ref>
[[File:YosemiteLavaDomes.png|alt=|thumb|425x425px|center]]
 
Karsk mountains of Guilin, Southwest China. Karsk mountains result from erosion of the surrounding limestone bedrock by running acidic water over millions of years.<ref>[https://theculturetrip.com/asia/china/articles/how-were-guilins-magical-mountains-formed/ How were Guilin's magical mountains formed?]</ref>
[[File:Guilin_yangshuo.png|alt=|thumb|425x425px|center]]
 
The diagrams shown below from Stephen Marshak's detailed and authoritative academic textbook, ''Essentials of Geology'', illustrate major types of mountain formation resulting from tectonic activity: Subduction of oceanic plates underneath continental plates; collision of continental plates; and rifting (separation) of plates which can cause fault block mountains.[[File:MarshakSubduction.png|alt=|thumb|425x425px|left|Illustration of mountain formation due to subduction of an oceanic plate.<BR />Fig. 9.16 in Stephen Marshak, ''Essentials of Geology'' Fourth Edition, 2013, New York: W. W. Norton & Company, p. 280]][[File:MarshakFaultBlock.png|alt=|thumb|425x425px|left|Illustration of mountain formation due to rifting.<BR />Fig. 9.18 in Stephen Marshak, ''Essentials of Geology'' Fourth Edition, 2013, New York: W. W. Norton & Company, p. 281<BR />It is apparent that fault block mountains, including tilted (or rotational) fault blocks form mountain ranges without generating crustal roots as their formation does not involve an increase in material, and hence no isostatic rebalancing.]][[File:MarshakContinentalCollisions.png|alt=|thumb|425x425px|center|Illustration of mountain formation due to continental plate collision.<BR />Fig. 9.17 in Stephen Marshak, ''Essentials of Geology'' Fourth Edition, 2013, New York: W. W. Norton & Company, p. 281<BR />Note that while this type of mountain formation results in crustal "roots" (thickening), the increased crustal thickness extends all along the length of the mountain range, so does not resemble a peg.]]
 
 


{{Quote|{{Quran|15|19}}|And the earth We have spread out (like a carpet); set thereon mountains firm and immovable; and produced therein all kinds of things in due balance.}}
===Alleged function as pegs===
Sometimes pictures of mountains used on Islamic videos and websites depict the crust protruding down into the lithospheric mantle (the upper mantle), giving the misleading impression that they "peg" the crust to it. In fact this layer and the crust are both part of the lithosphere and move together as an entire  lithospheric plate (tectonic plate) before mountains form at the boundaries of subduction and continental plate collision. The lithosphere moves over the asthenosphere, which is molten mantle and not a solid object into which something can be "pegged". Mountain ranges can also lose their root when [[w:Delamination_(geology)|delamination]] occurs, for example at the East Anatolian Plataeu.<ref>https://www.mn.uio.no/ceed/english/research/publications/articles/2020/delamination.pdf</ref> An image illustrating a section of the Tibetan Plateau which has also experienced delamination is shown below.


{{Quote|{{Quran|16|15}}|And He has set up on the earth mountains standing firm, lest it should shake with you; and rivers and roads; that ye may guide yourselves;}}
[[File:Tibetan-plateau.jpeg|alt=|thumb|425x425px|center|Delamination underneath part of the Tibetan Plateau. Notice also the wedge-shaped and not at all peg-like crust in the northward cross-section of the plateau.<ref>Fig. 5 in Jikun Feng, Huajian Yao, Ling Chen, Weitao Wang, [https://academic.oup.com/nsr/article/9/4/nwab174/6369358 Massive lithospheric delamination in southeastern Tibet facilitating continental extrusion], National Science Review, Volume 9, Issue 4, April 2022, nwab174, https://doi.org/10.1093/nsr/nwab174</ref>]].


{{Quote|{{Quran|21|31}}|And We have set on the earth mountains standing firm, lest it should shake with them, and We have made therein broad highways (between mountains) for them to pass through: that they may receive Guidance. }}
It could be added that far more significant downwards protrusions into the molten athenosphere are craton keels. [[w:Craton|Cratons]] are stable regions of the earth's crust that are no longer subject to mountain building processes. These craton roots or keels form through the depletion of basaltic elements into the asthenosphere, leading to less dense material that sinks deeper into the mantle due to the lower buoyancy (i.e. the isostasy of the crust, that is, rather than of the mountains).<ref>Sankaran, A.V. - [{{Reference archive|1=http://www.ias.ac.in/currsci/nov102001/1158.pdf|2=2011-10-02}} CURRENT SCIENCE] - VOL. 81, NO. 9, 10 NOVEMBER 2001 pp. 1158-1160</ref> Craton keels are deep extensions of cratons into the mantle which extend any where from 60-300km below the surface. These keels extend far deeper than crustal (mountain) roots. The formation of these craton roots, or keels, is, however, unrelated to mountains or their formation.<ref name="Perchuk2021">Perchuk, A.L., Gerya, T.V., Zakharov, V.S. et al. [https://www.nature.com/articles/s41586-020-2806-7 Building cratonic keels in Precambrian plate tectonics] Nature 586, 395–401 (2020). https://doi.org/10.1038/s41586-020-2806-7</ref>


{{Quote|{{Quran|31|10}}|He created the heavens without any pillars that ye can see; He set on the earth mountains standing firm, lest it should shake with you; and He scattered through it beasts of all kinds. We send down rain from the sky, and produce on the earth every kind of noble creature, in pairs.}}
[[File:Craton-keel.png|alt=|thumb|425x425px|center|Dynamic model of craton keel formation (fig. 5 in Perchuk et al. (2020) ''Building cratonic keels in Precambrian plate tectonics''<ref name="Perchuk2021"/>]]


As mentioned above, the phrases describing the mountains is the word rawaasiya (steadfast, anchors, used to mean mountains).<ref name="LexiconRawaasiya" />
==Mountains prevent the Earth from moving / convulsing / inclining==
A number of attempts are commonly made to interpret the following verses in light of modern science.


===General arguments===
{{Quote|{{Quran|16|15}}|And He has cast into the earth firmly set mountains, lest it shift with you, and [made] rivers and roads, that you may be guided,}}
Some advocates of the miracle argue that where mountains result from the collision of tectonic plates, they also cause the stability of the Earth. One advocates of the miracle writes as follows:{{Quote||Modern geologists describe the folds in the Earth as giving foundations to the mountains, and their dimensions go roughly one mile to roughly 10 miles. The stability of the Earth's crust results from the phenomenon of these folds.}}Critics, in response, point out the difference between cause and effect, suggesting that the advocates conflate the two, and describe how the formation of mountains is an incidental result of the collision of the tectonic plates, an event which in fact causes rather than prevents earthquakes. The mountains generated at these fault lines are a product of the tectonic collision and cannot be said to in any sense prevent it from taking place.


Other advocates of the miracle, aware that these mountains result from and do not prevent tectonic collision, proceed differently. These advocates argue that the mountains slow the collision down and dampen the impact.  
{{Quote|{{Quran|21|31}}|And We placed within the earth firmly set mountains, lest it should shift with them, and We made therein [mountain] passes [as] roads that they might be guided.}}


{{Quote||The role of mountains as stabilizers for the Earth's crust can be clearly seen in their very deep roots, and can be justified by the fact that the motions of the lithospheric plates only come to halt when a continent collides with another, producing a collisional type mountain, which is believed to be the last phase in mountain-building. Without mountains, the movement of lithospheric plates would have been much faster and their collision more drastic. Even though mountains do act as retarders for the plate movements, they should not be understood to be an independent force or factor, because they are the very product of this motion in the first place.}}
{{Quote|{{Quran|31|10}}|He created the heavens without pillars that you see and has cast into the earth firmly set mountains, lest it should shift with you, and dispersed therein from every creature. And We sent down rain from the sky and made grow therein [plants] of every noble kind}}


To these advocates, critics respond that there is no scientific evidence which suggests that mountains slow down tectonic collisions in any meaningful way. And, while it is inevitably the case that the crumpling of the crust which forms the mountains throughout the collision somehow 'dampens' the impact, there is no evidence that the resultant mountains stabilize either plate (it is also difficult to interpret what this could possible mean, as the mountains do not exist prior to the collision in any case, and so could not, again, meaningfully 'prevent' it). What stops the collision are simply the opposing forces of either plate.  
As mentioned above, the word describing the mountains in these verses is l-rawāsiya (the steadfast, anchored, anchors, used to mean mountains).<ref name="LexiconRawaasiya" /> Incidentally, the first two verses state that Allah created mountain passes for the benefit of humans. Critics would observe here that many mountain ranges are inconvenient for humans to traverse, with large detours necessary, and show no sign that they were designed with passes perfectly suited to human needs.


Moreover, the critics add, considering the above, these mountains are not acting in any capacity that can be described as peg-like (a better analogy might be the bumper of a car, which crumples upon collision to save the driver, for instance, from being crumpled - but this has nothing to do with pegs and does not serve the purpose of 'stabilization').  
===Refers to the earth as a whole===
While it is common today to interpret the above verses as a reference to earthquakes, it is far more likely that they refer to the earth as a whole. Since the author of these verses would have known that earthquakes do in fact occur, including in Arabia itself, it is unlikely that he would have described mountains as being created lest people suffer earthquakes. The most natural reading is that "the earth" (al-ard) in these verses refer to the entire Earth, which fits with the verse discussed above in which mountains are described as pegs or stakes. Al-Muhalil's pre-Islamic poem quoted above says that the mountains (rawāsiya, like in these verses of the Quran) prevent the earth from tipping over. Similarly, the myth of [[The Islamic Whale]] on which the Earth rests according to some hadiths was narrated in terms of mountains holding down the earth to stop it moving on the back of the whale.


===Arguments presented by Professor El Naggar===
Verses which do seem to describe earthquakes use the words zalzalah ({{Quran|22|1}}), or rajfatu ({{Quran|7|78}}, {{Quran|73|14}}). In contrast, the verses which state that Allah cast or placed the mountains to prevent the earth from shaking use the word tamīda, discussed in the next section below.


Professor El Naggar presents the above arguments in fewer words and with a less detailed explanation.  
Further evidence that the tamīda verses refer to the earth as a whole moving is found in a hadith collected by al-Tirmidhi. Its authenticity is graded hasan (good) by Dar-us-Salam, though regardless, this hadith provides linguistic evidence on the meaning of tamīda in relation to the earth as a whole.


{{Quote||The sea-deep roots stabilize the continental masses (or plates), as plate motions are almost completely halted by their formation, especially when the mountain mass is finally entrapped within a continent as an old craton.<ref name="El Naggar">Dr. Zaghlool El-Naggar PhD - [{{Reference archive|1=http://www.elnaggarzr.com/en/main.php?id=54|2=2011-10-02}} The Mountains as Stabilizers for the Earth] - September 24, 2002</ref>}}
{{Quote|{{Al Tirmidhi||5|44|3369}}|Anas bin Malik narrated that:
The Prophet said: “When Allah created the earth, it started shaking [tamīdu]. So He created the mountains, and said to them: ‘Upon it’ so it began to settle. [...]}}


Critics have responded to El Naggar's argument by equating it with the common argument made by advocates of the miracle which conflates the causality and effects involved in the collision of tectonic plates. The mountains, the critics repeat, are the product of the collision and play no known role in stopping it. The collision of the plates stops, instead, gradually slows down as a result of the opposing forces of the two colliding plates.
===The meaning of tamīda (move, convulse, incline to one side)===
The word translated shift in the above quoted verses is tamīda (from the root ميد). According to Lane's Lexicon, the meanings of this word include to be in a state of motion, convulsion, turn, twist, contort, to incline to one side. Lane even mentions regarding this word a tradition which held that the earth was inclined on its side before mountains were formed.<ref>تَمِيدَ tamīda [http://www.studyquran.org/LaneLexicon/Volume7/00000274.pdf Lane's Lexicon] page 2746</ref>


Critics also point out that El Naggar provides no reference for the causal connection he presents, and that the unevidenced claim presented here by El Naggar is itself only cited by un-refereed conferences on so-called 'Islamic science'.<ref>[{{Reference archive|1=http://web.archive.org/web/20050206082002/http://www.elnaggarzr.com/CV-E.htm|2=2011-10-02}} Curriculum Vitae of Professor DR. Z H. M. El-Na ggar] - Elnaggarzr.com</ref> El Naggar's own body of research contains nothing that would support the claim, which is perhaps unsurprising, as El Naggar's own specialization is in biostratifaction and not in the supposed 'stabilizing role of mountains'.
The usage of this word further supports the interpretation that these verses refer to mountains anchoring the earth as a whole from moving in such a manner.


Interestingly, the respected and much more widely-published geologist Dr. David A. Young reportedly concluded precisely the opposite of what El Naggar suggests, differentiating between the mountains existence as a product of the collision and any supposed role they might be assumed to play in rendering the crust stable. It is perhaps important to note that, by stark contrast, none of El Naggar's scientific publications have been peer-reviewed.
It is clear that the author of the Quran sought to describe some purposeful benefit for which he supposed mountains had been created. This desire is fulfilled by such an erroneous conception of mountains. Other interpretations which seek to interpret mountains as protecting humans from the effects of plate tectonics or earthquakes falter when one considers that an all-powerful creator of the heavens and earth would have been capable of actually ending all dangerous geological activity before humans arrived on the scene. Instead, some mountain ranges are in regions that are still geologically active, while other mountain ranges are in parts of the world which ceased being geologically active hundreds of millions of years before humans arrived (for example the highlands of Scotland).


{{Quote||While it is true that many mountain ranges are composed of folded rocks (and the folds may be of large scale) it is not true that the folds render the crust stable. The very existence of the folds is evidence of instability in the crust.<ref>{{citation|title=The Qur'an and the Bible in the Light of History & Science|author=Dr. William Campbell|chaper=Science and Revelation|url=https://www.answering-islam.org/Campbell/s4c2a.html|year=2002|archiveurl=https://web.archive.org/web/20140217001308/https://www.answering-islam.org/Campbell/s4c2a.html|publisher=Middle East Resources|edition=2nd|ISBN=1-881085-03-01}}</ref>}}El Nagger also suggests that mountains stabilize the lithospheric plates by sinking into the asthenosphere.{{Quote|1=|2=The stabilization of lithospheric plates by mountains is effected by their sinking deeply into the zone of weakness of the Earth (the asthenosphere) as wooden pegs sink into the ground to stabilize the corners of a tent. Such a process of stabilization cannot take place without the presence of a viscous, plastic material under the outer rocky cover of the Earth, into which the mountains "roots" can float. In as much as the ship casts its anchor into the anchorage of a port to avoid the dangers of rolling and swaying by winds and waves, the Glorious Quran uses the term "Rawasi" (=moorings or firm anchors) to describe mountains. Such firm anchors do not only stabilize the lithospheric plates, but also the whole planet in its spinning around its own axis (nutation, recession, etc.).<ref name="El Naggar"></ref>}}
===Tectonic plate interpretations===
Some advocates of the miracle claim argue that where mountains result from the collision of tectonic plates, they also cause the stability of the Earth. Maurice Bucaille in his book ''The Bible, the Quran and Science'' wrote as follows:{{Quote|Maurice Bucaille,''The Bible, the Quran and Science''|Modern geologists describe the folds in the Earth as giving foundations to the mountains, and their dimensions go roughly one mile to roughly 10 miles. The stability of the Earth's crust results from the phenomenon of these folds.}}Critics, in response, point out the difference between cause and effect, suggesting that the advocates conflate the two. The formation of mountains is an incidental result of the collision or rifting (separation) of the tectonic plates, events which in fact cause rather than prevent earthquakes. The formation of mountains and occurance of earthquakes are thus both largely the result of destabilizing tectonic activity. They are part of the same ongoing process and one cannot exist without the other. Like earthquakes, the mountains generated at these plate boundaries and fault lines are a product of the tectonic movement and cannot be said to in any sense prevent its other effects from taking place.  


As above, there is no scientific evidence which demonstrates that mountains stabilize the lithospheric plates, and El Naggar provides no references. By contrast, there is scientific evidence that suggests that continental plates are stabilized by craton keels. Craton keels are deep extensions of cratons into the mantle which extend any where from 60-300km below the surface. These keels extend far deeper than mountain roots. The formation of these craton roots, or keels, is, however, unrelated to mountains or their formation.<ref>Jordan, T. H., Nature, 1978, 274, 544–548; Elasser, W. M., in The Application of Modern Physics to Earth and Planetary Interiors (ed. Runcorn, S. K.), Interscience, New York, 1969, pp. 223– 240; Morgan, W. J., J. Geophys. Res., 1968, 73, 1959–1970</ref>
Other advocates of the miracle, aware that these mountains result from and do not prevent tectonic collision, proceed differently. These advocates argue that the mountains slow the collision of continental plates down and dampen the impact. To these advocates, critics respond that what stops the collisions are simply the opposing forces of either plate. It is impossible that crustal plates collisions could occur without forming mountains since they are part of the same physical process and laws, so a special divine act of creation to create mountains is unnecessary and meaningless. To put it another way, it is nonsensical to say that the earth would shift/convulse with its inhabitants (per the Quran) if the tectonic plate collisions happened without the formation of mountains. One cannot exist without the other.


Critics also point out that cratons are stable regions of the earth's crust that are no longer subject to mountain building processes. These craton roots or keels form through the depletion of basaltic elements into the asthenosphere, leading to less dense material that sinks deeper into the mantle due to the lower buoyancy (i.e. the isostasy of the crust, that is, rather than of the mountains).<ref>Sankaran, A.V. - [{{Reference archive|1=http://www.ias.ac.in/currsci/nov102001/1158.pdf|2=2011-10-02}} CURRENT SCIENCE] - VOL. 81, NO. 9, 10 NOVEMBER 2001 pp. 1158-1160</ref>
Moreover, the critics add, considering the above, these mountains are not acting in any capacity that can be described as peg-like (a better analogy might be the bumper of a car, which crumples upon collision to save the driver, for instance, from being crumpled - but this has nothing to do with pegs and does not serve the purpose of 'stabilization'). Nor does such an interpretation take account of the other types of mountain formation discussed above, for example fault block mountains which occur as plates move apart rather than together.


===The relationship between mountains and earthquakes===
===The relationship between mountains and earthquakes===
[[File:MarshakEarthquakes.png|alt=|thumb|425x425px|center|Fig. 8.18 in Stephen Marshak, ''Essentials of Geology'' Fourth Edition, 2013, New York: W. W. Norton & Company, p. 236]]


Critics also point out that, as early as the 1920s, scientists noted that earthquakes are concentrated in very specific and narrow zones arounds the planet (known as Wadati-Benioff zones). In 1954, French seismologist J.P. Rothé published a map showing the concentration of earthquakes along the zones indicated by dots and cross-hatched areas.<ref>[{{Reference archive|1=http://pubs.usgs.gov/gip/dynamic/zones.html|2=2011-10-02}} Earthquake zones] - U.S. Geological Survey</ref><center>[[File:Map_by_J.P._Rothé.gif|alt=|center|thumb|425x425px|J.P. Rothé's 1954 map]]</center>
A more common apologetic interpretation is to claim that the Quran speaks of mountains preventing earthquakes. However, critics point out that, as early as the 1920s, scientists noted that earthquakes are concentrated in very specific and narrow zones arounds the planet (known as Wadati-Benioff zones). In 1954, French seismologist J.P. Rothé published a map showing the concentration of earthquakes along the zones indicated by dots and cross-hatched areas.<ref>[{{Reference archive|1=http://pubs.usgs.gov/gip/dynamic/zones.html|2=2011-10-02}} Earthquake zones] - U.S. Geological Survey</ref><center>[[File:Map_by_J.P._Rothé.gif|alt=|center|thumb|425x425px|J.P. Rothé's 1954 map]]</center>


Critics note how the earthquakes originate mainly from the edges of tectonic plates, including collisional mountain ranges and ocean trenches and ridges, which demonstrates that mountains do not stabilize the crust or the earth. The presence of mountains on any part of the Earth's surface thus often suggests the presence of precisely those underground geographical circumstances which generate earthquakes. [[File:Seis-states.gif|alt=|frame]]Critics cite the Himalayan mountain range as a specific example of a mountain range which, rather than preventing earthquakes, is in fact closely associated with them. The collision of tectonic plates causes mountains to form and this same collision also causes earthquakes, which explains the correlation of the two phenomena.{{Quote|[{{Reference archive|1=http://asc-india.org/menu/seismi.htm|2=2011-10-02}} Seismicity of South Asia]<BR>ASC India|Why do earthquakes happen here?  
Critics note how the earthquakes originate mainly from the edges of tectonic plates, including collisional mountain ranges and ocean trenches and ridges, which demonstrates that mountains do not stabilize the crust or the earth. The presence of mountains on any part of the Earth's surface thus often suggests the presence of precisely those underground geographical circumstances which generate earthquakes. If there were no mountains, there would also be no tectonic activity, since the two are inextricably linked, and with no tectonic activity there would be no earthquakes.
[[File:Seis-states.gif|alt=|frame]]Critics cite the Himalayan mountain range as a specific example of a mountain range which, rather than preventing earthquakes, is in fact closely associated with them. The collision of tectonic plates causes mountains to form and this same collision also causes earthquakes, which explains the correlation of the two phenomena.{{Quote|[{{Reference archive|1=http://asc-india.org/menu/seismi.htm|2=2011-10-02}} Seismicity of South Asia]<BR>ASC India|Why do earthquakes happen here?  
The Indian subcontinent lies upon the Indian Plate. This plate is moving northward at about 5 centimetres per year and in doing so, collides with the Eurasian Plate. Upon the Eurasian Plate lie the Tibet plateau & central Asia. '''Due to this mammoth collision, the Himalayas are thrust higher and very many earthquakes are generated in the process. This is the cause of earthquakes from the Himalayas to the Arakan Yoma.''' The same process, though involving the Indian Plate and the Burmese Micro-plate results in earthquakes in the Andaman & Nicobar Islands. Sometimes earthquakes of different magnitudes occur within the Indian Plate, in the peninsula and in adjoining parts of the Arabian Sea or the Bay of Bengal. These arise due to localized systems of forces in the crust sometimes associated with ancient geological structures such as in the Rann of Kachchh.}}  
The Indian subcontinent lies upon the Indian Plate. This plate is moving northward at about 5 centimetres per year and in doing so, collides with the Eurasian Plate. Upon the Eurasian Plate lie the Tibet plateau & central Asia. '''Due to this mammoth collision, the Himalayas are thrust higher and very many earthquakes are generated in the process. This is the cause of earthquakes from the Himalayas to the Arakan Yoma.''' The same process, though involving the Indian Plate and the Burmese Micro-plate results in earthquakes in the Andaman & Nicobar Islands. Sometimes earthquakes of different magnitudes occur within the Indian Plate, in the peninsula and in adjoining parts of the Arabian Sea or the Bay of Bengal. These arise due to localized systems of forces in the crust sometimes associated with ancient geological structures such as in the Rann of Kachchh.}}  


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===Mountains and isostatic stabilization===
===Mountains and isostatic stabilization===


Advocates of the miracle point to George Airy's model of isostasy, which supports the idea that isostasy occurring below mountains causes mountains themselves to be more stable than if isostasy were not occurring below. This, they argue, is another point of evidence that mountains stabilize the Earth as described in the Quran. Critics respond to this argument by stating that George Airy's model says nothing special of mountains, per se, and simply demonstrates that isostasy - that is the extension of the earth's crust below the surface to a degree correlated to the height of the surface at any given point - generally causes the crust of the earth to be stable, whether or not a a given area is mountainous. Moreover, they point out, the fact that a mountain's isostasy causes the mountain to stabilize 'itself' - that is, just as the isostasy of any region causes that same region to be stable - does not mean that the mountain is in any way stabilizing the Earth in general or even the surrounding region in any meaningful way. They summarize this counterargument by suggesting that, on the basis of Airy's model, it can be said that if there were a region possessing a mountain and subject to isostasy, there is no reason to believe that region would be more stable than another, similar region that did not have a mountain but was also subject to isostasy to the same, natural extent.  
Advocates of the miracle point to George Airy's model of isostasy, which supports the idea that isostasy occurring below mountains causes mountains themselves to be more stable than if isostasy were not occurring below. This, they argue, is another point of evidence that mountains stabilize the Earth as described in the Quran. Critics respond to this argument by stating that George Airy's model says nothing special of mountains, per se, and simply demonstrates that isostasy - that is the extension of the earth's crust below the surface to a degree correlated to the height of the surface at any given point - generally causes the crust of the earth to be stable, whether or not a given area is mountainous. Moreover, they point out, the fact that a mountain's isostasy causes the mountain to stabilize 'itself' - that is, just as the isostasy of any region causes that same region to be stable - does not mean that the mountain is in any way stabilizing the Earth in general or even the surrounding region in any meaningful way. They summarize this counterargument by suggesting that, on the basis of Airy's model, it can be said that if there were a region possessing a mountain and subject to isostasy, there is no reason to believe that region would be more stable than another, similar region that did not have a mountain but was also subject to isostasy to the same, natural extent.  


{{Quote|[{{Reference archive|1=http://www.madsci.org/posts/archives/2004-03/1079354119.Es.r.html|2=2011-10-02}} Do plates with high moutains float higher then thosewithout moutains]<BR>David Smith, Director of Professional Development, MadSci Network, Earth Sciences, March 14, 2004|Isostacy, which says that any vertical column of the earth above some deep level of "compensation" must have the same mass. This has to do with bouyancy forces and with the tendency of deep materials (the asthenosphere, for example) to flow in response to pressure differences.}}
{{Quote|[{{Reference archive|1=http://www.madsci.org/posts/archives/2004-03/1079354119.Es.r.html|2=2011-10-02}} Do plates with high moutains float higher then thosewithout moutains]<BR>David Smith, Director of Professional Development, MadSci Network, Earth Sciences, March 14, 2004|Isostacy, which says that any vertical column of the earth above some deep level of "compensation" must have the same mass. This has to do with bouyancy forces and with the tendency of deep materials (the asthenosphere, for example) to flow in response to pressure differences.}}
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