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单词 lithosphere
释义 lithosphere
[`lith·ǝ´sfir]
GEOLOGY
1. The rigid outer crust of rock on the earth about 50 miles (80 kilometers) thick, above the asthenosphere. Also known as oxysphere.
2. Since the development of plate tectonics theory, a term referring to the rigid, upper 60 miles (100 kilometers) of the crust and upper mantle, above the asthenosphere.
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