| 单词 | pegmatite |
| 释义 | BETA Examples ofpegmatiteDictionary> Examples ofpegmatite pegmatiteisn’t in the Cambridge Dictionary yet. You can help! Add a definition A gabbroicpegmatiteis developed in the centre of the intrusion along its entire exposed 5 km strike length. From theCambridge English Corpus Where the pegmatites and alteration zones are cut, they show brittle offset. From theCambridge English Corpus There are, however, no field observations that indicate replacement of pre-existing gabbro cumulates bypegmatitein the macrodyke. From theCambridge English Corpus A trend towards more extensive plagioclase zonation is observed above the central gabbroicpegmatite. From theCambridge English Corpus They are more iron-rich in the central gabbroicpegmatitewhere there is a tendency for the grains to be less zoned. From theCambridge English Corpus The mineralogy of these pegmatites is similar to that of the central gabbroicpegmatite. From theCambridge English Corpus However, they also refer to it as an intrusion 'largely devoid of internal structure' in which 'layering, mineral fabric, xenoliths and pegmatites are uncommon'. From theCambridge English Corpus The pegmatites appear undeformed, and no significant differences exist between the two samples. From theCambridge English Corpus The sense of deflection (fanning) of foliation at thepegmatitecontacts may be predicted in stereographic projection (e). From theCambridge English Corpus Conspicuous pink mylonitized pegmatites are intensively brecciated along such crush zones. From theCambridge English Corpus We therefore suggest that the analysed part of the gabbroicpegmatiterepresents a 'cumulate' from which an incompatible trace element-enriched melt has escaped. From theCambridge English Corpus Thepegmatitecould therefore represent interstitial melt mobilized from gabbroic cumulates that later accumulated and crystallized at its present stratigraphic location. From theCambridge English Corpus Mobilized interstitial liquids were arrested at a specific level in the intrusion and crystallized to form the central gabbroicpegmatite. From theCambridge English Corpus The weak deformation in the pegmatites has no asymmetry and is geometrically unrelated to the mylonites and the gneisses. 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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