词汇 | crustal |
释义 | crustal adjective specializeduk /ˈkrʌs.təl/ us /ˈkrʌs.təl/ relating to the hard outer surface of the earth: (地球)外壳的 crustal displacement地壳移位 Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geomorphic gully erosion henge Holocene hoodoo petrographic petrographically petrography petrological petrologically Precambrian rockfall Examples of crustalcrustal Furthermore, crustal deformation associated with tectonic uplift and exposure of ancient basins often disrupts the lateral continuity of stratigraphic indicators and renders their correlation problematic. Although not mentioned in the text, crustal rebound as the weight of ice is removed might make the difference in this scenario as it develops. The derivation from or contamination with crustal material explains the observed similarity of the multi-element patterns to typical upper continental crust. With all these processes, interactions between mantle-derived and crustal-derived magmas control the nature of magmatism in the complex. This is valid also for variations among the basaltic members, implying either a heterogeneous mantle source or varying components of crustal contamination. Deciphering mantle and crustal signatures in subduction zone magmatism. Moreover, the crustal thickness has apparently been augmented over one hemisphere by up to 20 km or so, gradually tapering off near the hemisphere boundaries. At shallow crustal levels, extension can be taken up by tension fractures that sole out onto a normal fault-plane at depth. This area is not located at the margins of the earth's crustal plates where structural stresses may be released as frequent earthquakes and intense volcanicity. However, a simple restoration of structural units is worthwhile for determining approximate minimum amounts of upper crustal shortening and original palaeogeographic positions. It underlines the importance of acquiring coincident normal incidence and wide-angle profiles if crustal structure is to be fully characterized. Crustal contamination commonly plays an important role during magma emplacement and its effects must be evaluated carefully. If plate tectonics occurs, it must involve crustal fractionation into components with different buoyancy. In some of these inter pretations, amplitudes have been modelled to constrain velocity gradients and fine-scale crustal structure. Nd-isotope systematics reveal the characteristics of the source from which the magma is derived (including the contribution of older crustal material). 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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