单词	granulite
释义	granulite /ˈɡranjʊlʌɪt / noun [mass noun] Geology A fine-grained granular metamorphic rock in which the main component minerals are typically feldspars and quartz: [as modifier]: the granulite facies... These rocks display clear prograde metamorphism that peaks in granulite facies. Two types of terrain are especially characteristic of Archaean geology: greenstone - granite terrains and granulite - gneiss terrains. The granulite to eclogite transformation may not occur if water is absent; for example, if ocean crust has been dehydrated as happens when a slab subducts. Derivatives granulitic /ɡranjʊˈlɪtɪk/ adjective ... The researchers studied metamorphic conditions of granulitic rocks in the Zoblitz complex and estimated maximum pressure conditions of 21 kbar at 830°C. Resting on top of the granulitic rocks of the Dalsfjord Suite are the arkosic metasediments of the Hoyvik Group which are interpreted as detritus from the Dalsfjord Suite rocks. Also, those workers noted that eclogites, in particular with felsic composition, are theologically weak, relative to their granulitic equivalents. Origin Mid 19th century: from granule + -ite1.
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