| 11. | As the heat causes it to expand, the crust gradually thins; melted crustal rock, called rhyolite, forms bulges near the surface.
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| 12. | In metamorphic rocks, coesite was initially described in eclogite xenoliths from the crustal rocks are carried to depths of or more.
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| 13. | Small protocontinents ( cratons ) formed as crustal rock was melted and remelted by hot spots and recycled in subduction zones.
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| 14. | Upper lavas were partly contaminated with crustal rocks as magmas from the mantle plume passed through the lower and upper crust.
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| 15. | Water has a density of 0.433 lbs / sqin and upper crustal rocks has a density of 2.7gms / cm ^ 3.
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| 16. | When they rupture, huge slabs of crustal rock rush toward the surface or dive deeper with the speed of a rushing locomotive.
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| 17. | His argon-dating technique involved stepped pyrolysis of the rocks to force out the argon, then determining the crustal rocks from the Earth.
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| 18. | In continental crustal rocks, biotite may break down at high temperatures to form orthopyroxene + potassium feldspar + water, producing a granulite.
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| 19. | The lithosphere, however, only refers to the uppermost layers of the solid Earth ( oceanic and continental crustal rocks and uppermost mantle ).
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| 20. | That means the dynamo died and what is left is the memory of that dynamo, stored in the crustal rocks like a magnetic tape recording.
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