| 单词 | greenstone belt |
| 释义 | > as lemmasgreenstone belt greenstone belt n. Geology an extensive belt of metamorphosed volcanic rock containing major zones of greenstone, often with associated sedimentary rock and typically of Archaean age. ΘΚΠ the world > the earth > structure of the earth > structural features > [noun] > type of zone greenstone belt1872 sheeted zone1903 shatter belt1910 fault zone1931 slide area1959 fracture-zone1965 subduction zone1970 1872 Q. Jrnl. Geol. Soc. 28 292 Skirting the greenstone-belt on both sides is a series of siliceous slates and quartzites. 1922 A. H. Brooks Mineral Resources Alaska 133 The Hoosier prospect.., north of the present workings and 350 feet lower, is on a different greenstone belt. 2003 M. G. Best Igneous & Metamorphic Petrol. (ed. 2) xix. 614/2 Virtually all continents are host to small fragments of Archean greenstone belts. < as lemmas |
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