| 1. | Ocean crust consists of basic igneous rock, containing significant amounts of magnetite.
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| 2. | Along with sedimentary rocks parts of the basaltic ocean crust were also deformed.
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| 3. | Where this occurs, rare slices of ocean crust, known as ophiolites, are preserved on land.
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| 4. | Decompression melting creates the ocean crust at mid-ocean ridges.
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| 5. | Since the Miocene there has been shortening of the ocean crust absorbed by folding, and thrusting.
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| 6. | With a crustal thickness of, this amounts to about of new ocean crust formed every year.
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| 7. | It is thought that this reservoir came from subducted ocean crust that has been entrained by the mantle plume.
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| 8. | The ocean crust would in effect act as a kind of giant tape recorder of magnetic anomalies over time.
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| 9. | The find, near the Mid-Atlantic Ridge, which cuts a jagged line through the ocean crust, created immediate excitement among oceanographers.
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| 10. | Its geology consists of the Batalha rock formation which includes its ocean crust, its rocks originated from tholeitic pillow lava.
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