The Volcanic Fine Grained Compositional Equivalent Of Granite

Gabbro is a coarse grained mafic igneous rock made with mainly mafic minerals like pyroxene and only minor plagioclase.

The volcanic fine grained compositional equivalent of granite.

The countertops in your kitchen might be made of granite as this rock is. Its principal minerals are feldspars quartz and mica. Therefore plutonic rocks have coarse grained crystals. The softest mineral on mr.

The rock that is the fine grained equivalent of granite is. It is the fine grained compositional equivalent of diorite. Because mafic lava is more mobile it is less common than basalt. Igneous rocks are classified according to their mineral content.

One example of an aphanitic rock with felsic composition. A vesicular rock also known as cinder. Heaton professor of earth sciences university of south dakota. You will be told if your answer is correct or not and will be given some comments.

Igneous rocks and volcanoes practice exam questions written by timothy h. Mafic rocks are dominated by plagioclase and pyroxene even if you can t see them with the naked eye and smaller amounts of olivine. Moh s scale is. Mauna loa in hawaii is situated on a hot spot.

Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. This chart illustrates the generalized mineral composition of igneous rocks. Gabbro is a major component of the lower oceanic crust. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture.

Rhyolite lavas are the most common lavas seen at mid ocean ridges. Which rock is the fine grained equivalent of granite. The fine grained equivalent of granite. Material consisting of rock glass ash and scoria ejected during violent volcanic eruptions.

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. Intermediate rocks are roughly even mixtures of felsic minerals mainly plagioclase and mafic minerals mainly hornblende pyroxene. 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.

Peridotite never contains olivine.