Basalt Gabbro Granite

Extrusive igneous rocks erupt onto the surface where they cool quickly to form small crystals.

Basalt gabbro granite. The key difference between basalt and granite is that basalt is mostly occurring on ocean floors while granite is in the crust of the earth in all continents. Gabbro ˈ ɡ æ b r oʊ is a phaneritic coarse grained mafic intrusive igneous rock formed from the slow cooling of magnesium rich and iron rich magma into a holocrystalline mass deep beneath the earth s surface. Earth contains three kinds of rocks namely igneous rocks sedimentary rocks and metamorphic rocks basalt and granite are two types of igneous rocks. You can check out granite vs gabbro information and granite vs gabbro.

Diabase is the preferred name in north america while dolerite is. Gabbro granite and basalt are essentially the same material in different forms. Gabbro is coarse grained while basalt is fine grained. These rocks include andesite basalt dacite obsidian pumice rhyolite scoria and tuff.

All rocks of igneous origin consist of magma or molten earth that finds its way up to. Rocks are quarried from many years for various purposes. These rocks are composed of many distinct minerals. Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic basalt.

Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. Gabbro is sometimes called black granite for it too is coarse grained but a large proportion of iron bearing minerals make gabbro heavier and dark colored. ə b eɪ s or dolerite or microgabbro is a mafic holocrystalline subvolcanic rock equivalent to volcanic basalt or plutonic gabbro diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to aphanitic chilled margins which may contain tachylite dark mafic glass. The process of formation of rocks is different for various rocks.

Diabase ˈ d aɪ. Gabbro is actually intrusive basalt equivalent but unlike basalt gabbro it has a variable variable mineral content. Therefore more basalt than gabbro and more granite than rhyolite. Granite is a medium tocoarse grained acid igneous rock with essential quartz 20 and feldspar where alkali feldspar constitutes between 100 and 35 of the feldspars and minor mafic minerals.

Gabbro can also be gray or light green. Generally stratification of light and dark minerals layered gabbro significant amounts of olivine olivine gabbro or high percentage of coarse crystals of plagioclase feldspar löcogabbro. Some cool so quickly that they form an amorphous glass. Mafic magmas crystallize to form relatively simple atomic structures isolated tetrahedra and single chains and therefore flow easily the higher mafic temperatures also contribute to this ease of movement.

In order to form granite magma needs a good hard squeeze so its component materials can separate and form large crystals. If magma cools very quickly upon contact with air or water it will form basalt.