| 单词 |
metavolcanic |
| 释义 |
metavolcanic, n. and a. Petrogr. (Formerly at meta- 5 b.)|mɛtəvɒlˈkænɪk|
[f. meta- 5 b + volcanic a. (and n.).]
A. n. A volcanic rock which has been subjected to metamorphism.
B. adj. Designating such rock.
1942M. P. Billings Struct. Geol. xii. 215 Metasediments, metavolcanics, and meta-igneous rocks are metamorphic rocks derived, respectively, from sedimentary, volcanic, and igneous rocks. 1962Mineral. Abstr. XV. 381/1 The granite gneisses, amphibolites, and metavolcanics of the southern Klodzko metamorphic zone are described. 1964Ibid. XVI. 657/2 Thirteen planimetric and 22 chemical analyses elucidate the composition of the conglomerates, graywacke schists, mica schists, and basic metavolcanic rocks. 1971Bull. Volcanologique XXXIV. 778 Nearly all workers concerned with the stratified rocks have acknowledged that there are probably some metavolcanic rocks in the predominantly metasedimentary formations. 1979Canad. Mineralogist XVII. 198/1 Field relationships suggest that the metavolcanic and metasedimentary rocks may be coeval. 1989Jrnl. Petrol. XXX. 178 The igneous component is represented by amphibolites and intercalated felsic meta-volcanics. |
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