| 单词 | clastic |
| 释义 | clastic adjective geologyspecializeduk/ˈklæs.tɪk/us/ˈklæs.tɪk/used to refer to atypeofrockconsisting ofbrokenpiecesof otherrock （岩石）碎屑的Geology: types of rock
clastic| American Dictionaryclastic adjective[not gradable] us/ˈklæs·tɪk/earth science describesatypeofrockconsisting ofbrokenpiecesof otherrock Examplesofclasticclastic The initial stage of sedimentation in these basins was characterized by terrestrial and shallow marine deposits that consist of bothclasticand carbonate deposition. From theCambridge English Corpus The resulting channel bars will have provided more extensive areas ofclasticsubstrates, which will have favoured the fern-pteridosperm complex. From theCambridge English Corpus The predominant fill-type is aclastic-textured, orange/brown biomicrite containing abundant comminuted brachiopod material. From theCambridge English Corpus The system controlling the composition ofclasticsediments. From theCambridge English Corpus Extensional faulting created local accommodation space for the redeposition of material and focussedclasticsupply routes into the basin at transfer zones. From theCambridge English Corpus Stratigraphically diagnostic fossils are scarce or absent in many of theseclasticsequences, which furthermore differ markedly in lithological succession between different outcrop areas. From theCambridge English Corpus Clasticlayers up to 10 cm thick are common within thick seams. From theCambridge English Corpus This may partly be because the pteridosperms were probably growing on the levees and other raised areas in the forest withclasticsubstrates. From theCambridge English Corpus Within fluvial systems, channel belts and floodplains (sites of deposition of bothclasticand phytogenic material) environments coexisted. From theCambridge English Corpus The intervening sediments record the collapse of the platform and deposition ofclasticsediment derived from the advancing allochthon. From theCambridge English Corpus Juvenile clasts of phonolite obsidian form 5 % of the clast content, but are distinguished by altered (hydrated) clast margins, and internalclastictexture. From theCambridge English Corpus On the plus side, for example, there are comprehensive reviews ofclasticand carbonate diagenesis, with useful sections on the controls on porosity and permeability. From theCambridge English Corpus The frames arc covered by a specially developedclasticpolyester fabric. From theCambridge English Corpus Note that this is a mixed carbonate/clasticdeposit and that the thicknesses of the basal sandstone and conglomerate vary along strike. 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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