Granite batholith radiometric dating

The Himalaya is considered as a typical example of continent-continent collision between the Indian and Eurasian Plates during Cenozoic time.The Himalayan collision zone contains various granitoids with ages ranging from Proterozoic to Recent.

A rock consisting of equal proportions of orthoclase and plagioclase plus quartz may be considered a quartz monozonite.Granite is widely distributed throughout the Earth.Because of its hardness and comparative cheapness in relation to marble, granite is often used to make kitchen countertops.Granite is a common and widely-occurring group of intrusive felsic igneous rocks that forms at great depths and pressures under continents.Granite consists of orthoclase, plagioclase quartz, hornblende, biotite, muscovite and minor accessories such as magnetite, garnet, zircon and apatite minerals. Ordinary granite always carries a small amount of plagioclase, but when this is absent the rock is referred to as alkali granite.

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