The Fine Grained Volcanic Equivalent Of Granite Is Basalt

The fine grained rock texture that results from crystals too small to be see with the naked eye.

The fine grained volcanic equivalent of granite is basalt.

Basalt one example of an aphanitic rock with mafic composition. Moh s scale is. Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of. A tholeiitic basalt contains more conspicuous plagioclase and pyroxene crystals.

It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Summary of basalt vs. The tholeiitic and the alkali basalts. 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.

Learn more about basalt in this article. Mauna loa in hawaii is situated on a. Basalt is a fine grained. The fine grained equivalent of gabbro.

The rock that is the fine grained equivalent of granite is. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying. Medium grey fine grained rock typically of volcanic orgin. Basalts may be broadly classified on a chemical and petrographic basis into two main groups.

The softest mineral on mr. Fine grained equivalent to granite composed of mostly light colored silicates. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. 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 volcanic equivalent of granite is basalt. Its principal minerals are feldspars quartz and mica. How the magma felt during cooling.

Strato volcanoes are common around the margins of the pacific ocean. The specimen above is about two inches five centimeters across. For igneous rocks crystal size is interpreted to imply which of the following. Is the intrusive equivalent of andesite looks like grey granite.

Basalt can form in a few days to months whereas granite plutons can take millions of years to cool and harden. 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. Basalt is more common in oceanic crust while granite is more common in continental crust.

Is felsic in composition after an explosive volcanic eruption on an island the surrounding sea is full of light gray floating rock.