| 1. | It was formed from deep sea or mantle rocks.
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| 2. | Their spatial arrangement thus underlines major thrust planes bringing these mantle rocks into higher crustal levels.
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| 3. | It rises into the solid mantle rock, lowering its melting temperature and causing the rock to melt.
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| 4. | At the same time erosion resulted in stripping of the outer mantle rocks and further modeling of terrain.
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| 5. | I have examined thousands of mantle rocks in my career, but I had never seen anything like this,
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| 6. | In this model, tectonic plates diverge at mid-ocean ridges, where hot mantle rock flows upward to fill the space.
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| 7. | Debate continues whether these mantle rocks were a fluid and / or metal source, or simply reflect a favourable pathway.
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| 8. | Two types of magma have been determined to have generated in the Earth's upper mantle by partial melting of mantle rocks.
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| 9. | But if crust is recycled, the elements should be redistributed, leaving more complex chemical signatures in both mantle rocks and recycled crust.
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| 10. | Both can promote surface uplift through isostasy as hotter, less dense, mantle rocks displace cooler, denser, mantle rocks at depth in the Earth.
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