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释义
the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > other plutonics (10)
dunite1859

A coarse-grained plutonic igneous rock, typically green or greenish-brown, consisting largely of olivine with minor amounts of chromite and other…

napoleonite1866

Geology. = corsite, n. Now rare.

corsite1876

An orbicular gabbro found in Corsica.

tonalite1879

Originally: a particular variety of quartz-diorite; later used for any quartz-diorite. Now spec. a rock in which quartz represents 20–60 per cent of…

trout-stone1892

= troctolite, n.

granodiorite1893

Any of the plutonic igneous rocks intermediate in composition between true granite and quartz-diorite, which are similar in appearance to granite…

adamellite1896

= tonalite, n. Now disused.

syenodiorite1917

A plutonic rock of a kind intermediate between syenite and diorite, containing both alkali feldspar and plagioclase.

microdiorite1920

Any medium-grained or microcrystalline rock whose mineral composition is the same as that of a diorite.

trondhjemite1922

Any leucocratic tonalite, esp. one in which the plagioclase is oligoclase.

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更新时间:2025/2/24 3:45:59