The Volcanic Fine Grained Compositional Equivalent Of Granite

The countertops in your kitchen might be made of granite as this rock is.

The volcanic fine grained compositional equivalent of granite.

Igneous rocks and volcanoes practice exam questions written by timothy h. Rhyolite lavas are the most common lavas seen at mid ocean ridges. It is the fine grained compositional equivalent of diorite. One example of an aphanitic rock with felsic composition.

Therefore plutonic rocks have coarse grained crystals. The general physical appearance of a rock as observed in reflected light. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Because mafic lava is more mobile it is less common than basalt.

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. Heaton professor of earth sciences university of south dakota. The fine grained equivalent of granite.

Click the circle by an answer with the mouse then click on the submit button to get a response. Peridotite never contains olivine. Intermediate rocks are roughly even mixtures of felsic minerals mainly plagioclase and mafic minerals mainly hornblende pyroxene. Its principal minerals are feldspars quartz and mica.

A vesicular rock also known as cinder. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Which rock is the fine grained equivalent of granite. The rock that is the fine grained equivalent of granite is.

The softest mineral on mr. Ultramafic rocks are dominated by olivine and or pyroxene. Gabbro is the fine grained equivalent to basalt. Igneous rocks are classified according to their mineral content.

Gabbro is a coarse grained mafic igneous rock made with mainly mafic minerals like pyroxene and only minor plagioclase. 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. You will be told if your answer is correct or not and will be given some comments.

Moh s scale is.