The Volcanic Fine Grained Compositional Equivalent Of Granite

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The volcanic fine grained compositional equivalent of granite.

Material consisting of rock glass ash and scoria ejected during violent volcanic eruptions. A good example is granite which is a very hard plutonic rock. Click the circle by an answer with the mouse then click on the submit button to get a response. It is the fine grained compositional equivalent of diorite.

The softest mineral on mr. Rhyolite lavas are the most common lavas seen at mid ocean ridges. The general physical appearance of a rock as observed in reflected light. Its principal minerals are feldspars quartz and mica.

The rock that is the fine grained equivalent of granite is. Heaton professor of earth sciences university of south dakota. 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. Gabbro is a major component of the lower oceanic crust.

Gabbro is the fine grained equivalent to basalt. You will be told if your answer is correct or not and will be given some comments. Mauna loa in hawaii is situated on a hot spot. This chart illustrates the generalized mineral composition of igneous rocks.

Peridotite never contains olivine. Gabbro is a coarse grained mafic igneous rock made with mainly mafic minerals like pyroxene and only minor plagioclase. Because mafic lava is more mobile it is less common than basalt. One example of an aphanitic rock with felsic composition.

The fine grained equivalent of granite. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Which rock is the fine grained equivalent of granite. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock.

Mafic rocks are dominated by plagioclase and pyroxene even if you can t see them with the naked eye and smaller amounts of olivine. Igneous rocks and volcanoes practice exam questions written by timothy h. Ultramafic rocks are dominated by olivine and or pyroxene. Igneous rocks are classified according to their mineral content.

Therefore plutonic rocks have coarse grained crystals.