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单词 plate rock
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plate rock
plate rock n. Mining (now rare) = sense 19.
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the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > shale
metal1672
shale1747
shillet1777
plate1794
skerry1844
plate-shale1881
plate rock1893
1893 C. D. Wright Phosphate Industr. U.S. (6th Special Rep. Comm. of Labor) i. 41 Plate rock is more circumscribed than the other deposits, is more accessible, and has been more thoroughly exploited.
1913 E. H. Sellards Origin Hard Rock Phosphate Deposits Florida in 5th Ann. Rep. Florida Geol. Surv. 62 The plate rock deposits represent a peculiar phase of the hard rock formation. It seems probable that the plate rock represents, in part at least, fragments of boulders that have disintegrated.
2005 D. S. Hammond Trop. Forests Guiana Shield ii. 15/2 The South American plate abruptly ends off the western Pacific coast along the ‘trailing’ boundary of the plate where the giant Pacific plate rock moves beneath, or subducts the South American plate.
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更新时间:2024/11/11 0:11:31