The Volcanic Fine Grained Compositional Equivalent Of Granite

Igneous rocks are classified according to their mineral content.

The volcanic fine grained compositional equivalent of granite.

The countertops in your kitchen might be made of granite as this rock is. Igneous rocks and volcanoes practice exam questions written by timothy h. Click the circle by an answer with the mouse then click on the submit button to get a response. Gabbro is the fine grained equivalent to basalt.

The general physical appearance of a rock as observed in reflected light. The fine grained equivalent of granite. Because mafic lava is more mobile it is less common than basalt. One example of an aphanitic rock with felsic composition.

Its principal minerals are feldspars quartz and mica. Mauna loa in hawaii is situated on a hot spot. Mafic rocks are dominated by plagioclase and pyroxene even if you can t see them with the naked eye and smaller amounts of olivine. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture.

Moh s scale is. A good example is granite which is a very hard plutonic rock. Peridotite never contains olivine. Rhyolite lavas are the most common lavas seen at mid ocean ridges.

Which rock is the fine grained equivalent of granite. You will be told if your answer is correct or not and will be given some comments. Material consisting of rock glass ash and scoria ejected during violent volcanic eruptions. Ultramafic rocks are dominated by olivine and or pyroxene.

A vesicular rock also known as cinder. Intermediate rocks are roughly even mixtures of felsic minerals mainly plagioclase and mafic minerals mainly hornblende pyroxene. Gabbro is a major component of the lower oceanic crust. Gabbro is a coarse grained mafic igneous rock made with mainly mafic minerals like pyroxene and only minor plagioclase.

Granites and rhyolites compositionally equivalent to granite but of a fine grain size are composed mainly of orthoclase feldspar quartz plagioclase feldspar mica and amphibole. The rock that is the fine grained equivalent of granite is. This chart illustrates the generalized mineral composition of igneous rocks. It is the fine grained compositional equivalent of diorite.

Therefore plutonic rocks have coarse grained crystals.