| 单词 | shale |
| 释义 | shale noun[U] uk/ʃeɪl/us/ʃeɪl/atypeofsoft,greyrock, usuallyformedfromclaythat hasbecomehard, thatbreakseasilyintothinlayers 页岩 Douglas Sacha/Moment/GettyImages Geology: types of rock
shale| American Dictionaryshale noun[U] us/ʃeɪl/earth science atypeofrockconsisting ofsolidmaterialthat has beenpressedintothinlayers Examplesofshaleshale About 50 specimens, mostly proximal ends, preserved in partial relief on two small pieces ofshale. From theCambridge English Corpus Reefs have been exhumed by erosion of overlying shales. From theCambridge English Corpus Fragments ofshaleand chert are indicative of parent material of lower regional metamorphism than the gneissic fragments. From theCambridge English Corpus Subsequent abrupt deepening led to deposition of a thick blackshaleunit, turbidite deposits and large-scale submarine channel-fill deposits. From theCambridge English Corpus Bioturbation is abundant in theshaleas both horizontal and vertical exichnial traces. From theCambridge English Corpus In analogy with impact heating, the target (in this case theshale) was not progressively heated but heated relatively rapidly. From theCambridge English Corpus The stippled bands represent the lower and upper black shales. From theCambridge English Corpus Most likely the organic matter is derived from the carbon- and uranium-rich bituminousshaleof the target. From theCambridge English Corpus Thus, during preparation theshaleprojectiles used were worked into near spherical shape. From theCambridge English Corpus The necromass concentrations of all nutrients on sandstone were lower than onshale. From theCambridge English Corpus The lower member (max. c. 600 m) is composed mainly of thick clay shales interbedded with thin sandy limestone beds (packstones and wackestones). From theCambridge English Corpus Many of the black shales exhibit few features optically due to their fine grain size. From theCambridge English Corpus The latter was described as "massive sandstones and conglomerates with interbedded sandy shales which are of continental origin". From theCambridge English Corpus The abundance of shales in the central lake deposits shows a low-energy depositional setting. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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