The Fine Grained Volcanic Equivalent Of Granite Is Basalt

Learn more about basalt in this article.

The fine grained volcanic equivalent of granite is basalt.

Summary of basalt vs. Basalts may be broadly classified on a chemical and petrographic basis into two main groups. Very dark green to black fine grained rock composed primarily of pyroxene and calcium rich plagioclase feldspar. 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.

Gabbro is the fine grained equivalent to basalt. Granite is a coarse grained light colored intrusive igneous rock that contains mainly quartz feldspar and mica minerals. The fine grained equivalent of gabbro. How the magma felt during cooling.

Is the intrusive equivalent of andesite looks like grey granite. Mauna loa in hawaii is situated on a. Is felsic in composition after an explosive volcanic eruption on an island the surrounding sea is full of light gray floating rock. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying.

Moh s scale is. Basalt is more common in oceanic crust while granite is more common in continental crust. Strato volcanoes are common around the margins of the pacific ocean. Its principal minerals are feldspars quartz and mica.

A tholeiitic basalt contains more conspicuous plagioclase and pyroxene crystals. 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. For igneous rocks crystal size is interpreted to imply which of the following.

Is the coarse grained equivalent of andesite. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Basalt is a fine grained. Basalt one example of an aphanitic rock with mafic composition.

Basalt extrusive igneous volcanic rock that is low in silica content dark in color and comparatively rich in iron and magnesium. Peridotite contains calcium rich plagioclase. Fine grained equivalent to granite composed of mostly light colored silicates. The softest mineral on mr.

The tholeiitic and the alkali basalts. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of. Medium grey fine grained rock typically of volcanic orgin.

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.