| 单词 | roof pendant |
| 释义 | > as lemmasroof pendant roof pendant n. Geology a mass of country rock which projects downwards into an intrusive body such as a batholith, or remains as an erosional fragment on its upper surface. ΘΚΠ the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > intrusion > roof pendant roof pendant1906 1906 R. A. Daly in Bull. Geol. Soc. Amer. 17 336 The whole forms a huge irregular block of roof rock almost completely surrounded and probably underlain by..granite. Such a block, once a downwardly projecting part of a roof in stock or batholith, may be named a ‘roof pendant’; it is analogous to the pendant of Gothic architecture. 1961 Amer. Mineralogist 46 249 Erosion has lowered the surface to the point where only patches of the metamorphics have been preserved, embedded in a matrix of the quartz diorite as roof pendants or ‘curtains’. 1992 A. A. Schoenherr Nat. Hist. Calif. iii. 52 Small remnants of the overlying sediment, called roof pendants, are still found along the crest of the Sierra Nevada. < as lemmas |
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