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===Mountains as pegs, cast down to stabilize the Earth=== | ===Mountains as pegs, cast down to stabilize the Earth=== | ||
{{Main|The Quran and Mountains}} | {{Main|The Quran and Mountains}} | ||
The Quran describes mountains as pegs or stakes and as having been cast into the earth lest it shift with its inhabitants. In pre-Islamic poetry (see main article), mountains anchor the earth | The Quran describes mountains as pegs or stakes and as having been cast into the earth lest it shift with its inhabitants. In early or pre-Islamic poetry (see main article), mountains anchor the earth, and the Quranic verses too most straightforwardly seem to refer to mountains stabilizing the earth as a whole. Many modern Islamic scholars have argued that the Quran's description of mountains as 'pegs' accurately depicts their physical nature in terms of the scientifically known phenomenon of isostasy, and that verses stating that mountains were 'cast' into the Earth's surface in order to prevent it shifting refers to some role in preventing earthquakes. Isostasy is the phenomenon where some mountains exist atop a similar accumulation of crust underground. Both the mountain and thickened continental crust beneath them form when tectonic plates collide, with some crust matter being propelled upward (becoming the visible mountain) and, sometimes, a similar quantity of crust matter being propelled downward. | ||
Critics have pointed out that while there is at times an underground accumulation of crust-matter below mountains, scientists have pointed out that this phenomenon does not in any way stabilize the Earth's surface. Indeed, modern science has discovered that mountains (and their underground underbellies) are in fact a direct product of the instability of the Earth's surface, which form when tectonic plates collide and generate destructive earthquakes. | Critics have pointed out that while there is at times an underground accumulation of crust-matter below mountains, scientists have pointed out that this phenomenon does not in any way stabilize the Earth's surface. Indeed, modern science has discovered that mountains (and their underground underbellies) are in fact a direct product of the instability of the Earth's surface, which form when tectonic plates collide and generate destructive earthquakes. | ||
Secondly, critics 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 or contorted shape due to geological processes. This shape is also nothing like a peg, since the thickening which occurs when continental plates collide extends all along the length of the resulting mountain range. Moreover, they do not peg anything to something else since the thickened crust beneath mountain ranges merely protrudes deeper than the surrounding crust into the Earth's mantle, which is molten and not a solid object. | Secondly, critics 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 or contorted shape due to geological processes. This shape is also nothing like a peg, since the thickening which occurs when continental plates collide extends all along the length of the resulting mountain range. Moreover, they do not peg anything to something else since the thickened crust beneath mountain ranges merely protrudes deeper than the surrounding crust into the Earth's mantle, which is molten and not a solid object. Far more substantial downward protrusions into the mantle are the subducted edges of tectonic plates and craton keels. | ||
Thirdly, continental crust thickening (sometimes called 'crustal roots' or 'mountain roots', terms which refer to the crust beneath entire mountain ranges rather than individual mountains) does not occur during the formation of other types of mountain, such as karsk mountains, plateau mountains, fault-block mountains, and lava dome mountains. | Thirdly, continental crust thickening (sometimes called 'crustal roots' or 'mountain roots', terms which refer to the crust beneath entire mountain ranges rather than individual mountains) does not occur during the formation of other types of mountain, such as karsk mountains, plateau mountains, fault-block mountains, and lava dome mountains. |