gabbro rock


Gabbro is a coarse-grained and usually dark-colored igneous rock. It is an intrusive rock. It means that it formed as magma cooled slowly in the crust. Igneous rocks with similar composition are basalt (extrusive equivalent of gabbro) and diabase (the same rock type could be named dolerite or microgabbro instead).

Gabbro | SpringerLink

Gabbro is a medium- to coarse-grained, mafic intrusive igneous rock, mostly grayish to greenish in color, and is the most abundant rock in the oceanic crust. Oceanic gabbros are mainly composed of three minerals: olivine, plagioclase, and clinopyroxene, sometimes associated with orthopyroxene, amphibole, and Fe-Ti oxides.

Gabbro | Properties, Formation, Composition, Uses

Gabbro. Gabbro is a type of intrusive igneous rock that is coarse-grained and dark-colored, typically composed of calcium-rich plagioclase feldspar, pyroxene, and sometimes olivine. It is similar in composition to basalt, which is its extrusive equivalent.

Gabbro Rock Type, Composition, Formation, Occurrence

Gabbro is an intrusive igneous rock with a black or dark-green appearance. The term "Gabbro" was first used in the 1760s to name a newly discovered rock found in ophiolites of the Apennine Mountains in Italy. The rock was named after Gabbro, a hamlet near Rosignano Marittimo in Tuscany, Italy.

Gabbro |

gabbro A coarse-grained, basic igneous rock, consisting of essential calcium-rich plagioclase feldspar (approximately 60%), clinopyroxene ( augite or titanaugite), and orthopyroxene ( hypersthene or bronzite ), plus or minus olivine with accessory magnetite or ilmenite. Gabbros result from the slow crystallization of magmas of basaltic ...

Gabbro: Igneous Rock

Gabbro is a coarse-grained, dark-colored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite. It is the most abundant rock in the deep oceanic crust. Gabbro has a …


Gabbro ( / ˈɡæb.roʊ /) 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. Slow-cooling, coarse-grained gabbro is chemically equivalent to rapid-cooling, fine-grained basalt.


Diabase (/ ˈ d aɪ. ə ˌ b eɪ s /), also called dolerite (/ ˈ d ɒ l. ə ˌ r aɪ t /) 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 ...


Gabbro. Gabbro is an igneous rock which has crystallized deep in the Earth. Since the rock cooled and hardened (and crystallized) deep below the Earth's surface, it will be coarse grained. High pressure is usually found deep below the surface of the Earth. Here, molten material cools very slowly.

Gabbro | Igneous Rock, Mafic Minerals & Plutonic Intrusions

Gabbro, any of several medium- or coarse-grained rocks that consist primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive (plutonic) equivalent of basalt, but whereas basalt is often remarkably homogeneous in mineralogy and composition, gabbros are exceedingly.