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单词 rain print
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rain print
rain print n. Geology a small crater-like indentation found in certain types of rock which has the appearance of having been formed by the landing of a raindrop.
ΚΠ
1851 C. Lyell in Q. Jrnl. Geol. Soc. 7 238 We observed some very distinct rain-prints on ripple-marked shales.
1920 F. W. Emerson Agric. Geol. 1 By these fossil rain prints and stream marks we know that this rock was accumulated near an ancient beach.
1997 Sedimentary Geol. 112 45/2 The mudstones have undergone intensive pedogenic modification, and some beds contain rain prints and reptile trackways.
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