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Diorite (/ ˈ d aɪ. ə r aɪ t / DY-ə-ryte) [1] [2] is an intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals.
Diorite Peak is a 12,761-foot-elevation ... The peak is named for diorite which is an intrusive igneous rock formed by the slow cooling underground of magma. [1]
The Crazy Mountains have assemblages of diorite, gabbro, and peridotite as a result from laccoliths, sills and dikes. [7] This region's extensive subcontinental mantle is similar to mid-ocean ridge and ocean island basalt sources. [8]
They are formed by hundred of plutons that directly related to subduction. [21] For example, Coastal Batholith of Peru consists of 7–16% gabbro and diorite, 48–60% tonalite (including trondhjemite), and 20–30% granodiorite, with 1–4% granite. [ 22 ]
Quartz diorite is an igneous, plutonic rock, of felsic composition, with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine ) with 10% or less potassium feldspar.
Magma that cools slowly within a magma chamber usually ends up forming bodies of plutonic rocks such as gabbro, diorite and granite, depending upon the composition of the magma. Alternatively, if the magma is erupted it forms volcanic rocks such as basalt, andesite and rhyolite (the extrusive equivalents of gabbro, diorite and granite ...
Granodiorite is a plutonic igneous rock, formed by intrusion of silica-rich magma, which cools in batholiths or stocks below the Earth's surface. It is usually only exposed at the surface after uplift and erosion have occurred.
This was formed from a granite dated at using U-Pb dating on zircon grains. A foliated Perelle quartz diorite (also called Perelle Gneiss), occurs in the centre and west of the island. This is a calc-alkaline tonalitic rock. The foliation was formed at around during the Cadomian Orogeny. Rafts of metamorphosed sediments, older than the Foliated ...