Comment: 16:24 - 16:48 (00:24)
Source: Annenberg/CPB Resources - Earth Revealed - 18. Metamorphic Rocks
Keywords: "James Sadd", chart, mineral, temperature, pressure, metamorphism, basalt, crust, "ocean basin", "Earth's surface"
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Our transcription: This chart is an example how minerals are used to interpret the metamorphism of basalt, the rock that makes up the crust of the world's ocean basin.
Pressure on the chart increases downward, and temperature increases to the right.
This is a piece of un-metamorphosed basalt, which formed at the Earth's surface.
This rock would plot here on our chart at relatively low temperature and pressure.
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Geology School Keywords
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