首页 > Term: continental crust
continental crust
The predominantly granitic rock that comprises the stony foundations of the continents. (Ocean floors are composed primarily of basalt. ) The crust's thickness varies from 20 to 75 kilometers. See Earth, Layers.
- 词性: noun
- 行业/领域: 生物学
- 类别 生态学
- Company: Terrapsych.com
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- Surus
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