[farhad]

I've taken an interest in geology after the revelation of the quran that mountains play a role in the balance of stability and movement of the earth's crust. According to the quran the mountain sunk underneath the mantle in the form of a root of stakes plays a role in the balance of the earths crust and this phenomena is known as Isostacy. after much research and mixed information online, I've finally stumbled on a reputable source outside of islam the encyclopedia of Britannica seemed to have confirmed and supports the quranic geological statement.

Istocacy is theoretical "balance" of all large portions of Earth’s lithosphere.as though they were floating on the denser underlying layer

So here it says it controls earth's lithosphere, and where is that lithosphere? its the the rigid outer part of the earth, consisting of the crust and upper mantle.
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below the surface Isostasy controls the regional elevations of continents and ocean floors in ACCORDANCE with the densities of their underlying rocks (high mountains with low density deep roots)
a mountain system, is due to a deficit of mass, or low-density roots, below sea level. Therefore, high mountains have low-density roots that extend deep into the underlying mantleIn the theory of isostasy, a mass above sea level is supported "below sea leve"l, and there is thus a certain depth at which the total weight per unit area is equal all around the Earth; this is known as the depth of compensationAccording to this hypothesis, mountains have roots below the surface that are much larger than their surface expression

conclusion:so here we read the underlying mantle of high mountain has deep roots and the so this root from its LOW densities supports the earths outerpart of the earth which is crust and mantle. we call that asthenosphere. so quran rightly talks about mountain roots give balance and stability to earths litherphere.

http://www.britannica.com/science/is...geologyfurther info on britinaccaHeiskanen hypothesis, hypothesis says that approximately two-thirds of the topography is "compensated" by the root formation (the Airy model)so here we again find that the high mountain underlying roots balance the lithosphere of earths weight. So if you have balls counter it. Lot of these info were not available on the internet so muslim couldn't answer with reference, here this info is coming from the enclyclopedia of britiannica.

Regards to quran quote here they are.
We placed firmly embedded mountains on the earth, so it would not move under them… (Qur'an, 21:31)

Have We not made the earth as a bed and the mountains its "stakes"? (Qur'an, 78:6-7)

He] cast firmly embedded mountains on the earth so that it would not move under you… (Qur'an, 31:10)

This describes the mountains roles to balance the earths crust

You see the mountains you reckoned to be solid going past like clouds. (Qur'an, 27:88)

This is what the quran says that mountains digged deep underneath in the form of root structure or stake helps to balance the above crust. and the last verse also says mountains also are not completely fixed, they move in very slow motion as continental crust drifts.

hope that explains everything.