| 单词 | chert |
| 释义 | BETA Examples ofchertDictionary> Examples ofchert chertisn’t in the Cambridge Dictionary yet. You can help! Add a definition Depleted olivine basalts are associated with radiolarian cherts while most pelagic limestones and cherts are found interbedded with alkali basalts. From theCambridge English Corpus Thechertcolour changes from whitish to black above the basal covered tract. From theCambridge English Corpus Individual radiolarianchertbeds range in thickness from 3-4 cm thick and are interbedded with shale or mudstone. From theCambridge English Corpus However, a small number ofchertnodules are concretionary. From theCambridge English Corpus Limestone fragments and a few silicified grains (chert) are present, within a calcite spar cement. From theCambridge English Corpus These conglomerates are composed of clasts of basalt, volcaniclastic sandstone, alkaline lava and sub-roundedchert. From theCambridge English Corpus The abundance of conodont elements also shows significant variation in similarchertlithologies, probably indicating fluctuations in sedimentation rate at particular stratigraphical intervals. From theCambridge English Corpus Tuffitic layers alternate with metapelites, arkoses and cherts. From theCambridge English Corpus The main lithology of the metamor phic sole is amphibolite, with subordinate greenschist, marble and meta-chert. From theCambridge English Corpus Fragments of shale andchertare indicative of parent material of lower regional metamorphism than the gneissic fragments. From theCambridge English Corpus It is interesting to note that 11 of 36chertbifacial points recovered from the structure were found in this room. From theCambridge English Corpus The rift basin was then covered by siliceous pelagic carbonate, in whichchertformed diagenetically. From theCambridge English Corpus These sediments were extensively silicified during diagenesis and preserved aschertof replacement origin. 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. |
| 随便看 |
|
英汉词典包含213609条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。