Intrusive Granite Extrusive Equivalent

Rhyolite is the extrusive equivalent in chemistry and density of granite.

Intrusive granite extrusive equivalent.

Intrusive rocks are classified the same way extrusive rocks are according to the relative amounts of feldspars quartz and ferromagnesian minerals. They are primarily formed from continental crust. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Granite is an intrusive felsic silicic plutonic rock.

Intrusive igneous rocks crystallize below earth s surface and the slow cooling that occurs there allows large crystals to form. Granites are light colored with coarse grains. It commonly forms as a bubble rich upper surface on many basalt and andesite lavas. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture.

It is the intrusive equivalent of the extrusive rhyolite. Intrusive equivalent of rhyolite. A felsic coarse grained intrusive igneous rock composed of quartz orthoclase feldspar sodium rich plagioclase feldspar and micas. Granite is classified as a felsic rock high in silica content.

For example a magma that would form rhyolite if it vented at the surface would crystallize into a granite in a subterranean chamber kilometers below the surface. What rock has the same composition as granite. Its principal minerals are feldspars quartz and mica. Granite is a coarse grained light colored intrusive igneous rock that contains mainly quartz feldspar and mica minerals.

The central cores of major mountain ranges consist of intrusive igneous rocks usually granite. Very light and will float on water. Diorite is an intermediate rock equivalent to andesite. Scoria is a dark colored extrusive volcanic rock with abundant large vesicles.

The high silica and low iron and magnesium contents result in crystallization of mostly non ferromagnesium silicate minerals k feldspar na plagioclase and quartz. Gabbro is a mafic rock and has the same chemistry and mineralogy as basalt. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite.

And granite is a felsic rock equivalent to rhyolite.