The Fine Grained Volcanic Equivalent Of Granite Is Basalt

How the magma felt during cooling.

The fine grained volcanic equivalent of granite is basalt.

Medium grey fine grained rock typically of volcanic orgin. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Basalts may be broadly classified on a chemical and petrographic basis into two main groups. Fine grained equivalent to granite composed of mostly light colored silicates.

Komatiite is a rare rock because volcanic material that comes directly from the mantle is not common although some examples can be found in ancient archean rocks 2. Basalt is more common in oceanic crust while granite is more common in continental crust. Is the intrusive equivalent of andesite looks like grey granite. For igneous rocks crystal size is interpreted to imply which of the following.

Basalt one example of an aphanitic rock with mafic composition. Summary of basalt vs. Strato volcanoes are common around the margins of the pacific ocean. The tholeiitic and the alkali basalts.

The specimen above is about two inches five centimeters across. The fine grained rock texture that results from crystals too small to be see with the naked eye. Learn more about basalt in this article. Is the coarse grained equivalent of andesite.

Gabbro is the fine grained equivalent to basalt. Basalt can form in a few days to months whereas granite plutons can take millions of years to cool and harden. The fine grained volcanic equivalent of granite is basalt. Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of.

Basalt extrusive igneous volcanic rock that is low in silica content dark in color and comparatively rich in iron and magnesium. Very dark green to black fine grained rock composed primarily of pyroxene and calcium rich plagioclase feldspar. Basalt and gabbro are the extrusive and intrusive names for mafic igneous rocks and peridotite is ultramafic with komatiite as the fine grained extrusive equivalent. Mauna loa in hawaii is situated on a.

A tholeiitic basalt contains more conspicuous plagioclase and pyroxene crystals. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Is felsic in composition after an explosive volcanic eruption on an island the surrounding sea is full of light gray floating rock. Peridotite contains calcium rich plagioclase.

Granite is a coarse grained light colored intrusive igneous rock that contains mainly quartz feldspar and mica minerals. The softest mineral on mr. The fine grained equivalent of gabbro. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying.

Its principal minerals are feldspars quartz and mica.