The Fine Grained Volcanic Equivalent Of Granite Is Basalt

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

The fine grained volcanic equivalent of granite is basalt.

Basalt extrusive igneous volcanic rock that is low in silica content dark in color and comparatively rich in iron and magnesium. The softest mineral on mr. Basalt is a fine grained. Gabbro is the fine grained equivalent to basalt.

The specimen above is about two inches five centimeters across. Peridotite contains calcium rich plagioclase. How the magma felt during cooling. Basalt one example of an aphanitic rock with mafic composition.

Moh s scale is. Very dark green to black fine grained rock composed primarily of pyroxene and calcium rich plagioclase feldspar. The rock that is the fine grained equivalent of granite is. Basalt is more common in oceanic crust while granite is more common in continental crust.

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. For igneous rocks crystal size is interpreted to imply which of the following. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. The fine grained rock texture that results from crystals too small to be see with the naked eye.

Is the intrusive equivalent of andesite looks like grey granite. Mauna loa in hawaii is situated on a. Basalts may be broadly classified on a chemical and petrographic basis into two main groups. Learn more about basalt in this article.

Its principal minerals are feldspars quartz and mica. A tholeiitic basalt contains more conspicuous plagioclase and pyroxene crystals. Medium grey fine grained rock typically of volcanic orgin. Is the coarse grained equivalent of andesite.

Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of. Granite is a coarse grained light colored intrusive igneous rock that contains mainly quartz feldspar and mica minerals. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic vent and solidifying. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock.

Strato volcanoes are common around the margins of the pacific ocean. Summary of basalt vs. 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. Fine grained equivalent to granite composed of mostly light colored silicates.

The fine grained equivalent of gabbro.