| 单词 | blue schist |
| 释义 | > as lemmasblue schist blue schist n. Geology a schist of a bluish colour; spec. (in form blueschist) a glaucophane-containing metamorphic rock formed by alteration of igneous rock under conditions of relatively high pressure and low temperature. ΚΠ 1789 J. Williams Nat. Hist. Mineral Kingdom II. 16 In rocks of blue schist, about three or four miles north of Callendar, in Monteith. 1867 Engineering 9 Aug. 112/1 All the piers are founded on a hard blue schist, which was found at an average depth of about 20 ft. below the surface of the soil. 1922 Jrnl. Egyptian Archaeol. 8 246 Each of these heads had large eyes of red jasper, white shell, and blue schist. 1962 Jrnl. Geol. (Chicago) 70 734/2 Physical conditions of metamorphism (appropriate to the glaucophane or blueschist facies) must have been different from those giving rise to greenschists. 1979 R. Anderton et al. Dynamic Stratigr. Brit. Isles vi. 72/2 To the south, in S. Brittany,..a major E–W fault zone is associated with blueschists and eclogites. 2004 J. J. W. Rogers & M. Santosh Continents & Supercontinents ii. 29/1 Archean rock suites contain no blueschist. < as lemmas |
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