Gabbro is a dense, mafic intrusive rock. It generally occurs as batholiths and laccoliths and is often found along mid-ocean ridges or in ancient mountains composed of compressed and uplifted oceanic crust. Gabbro is the plutonic equivalent of basalt.
Gabbro
Form of rock
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Gabbro is a phaneritic, 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... Wikipedia
Equivalent: basalt
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Gabbro is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a ...
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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 ...
Gabbro | Igneous Rock, Mafic Minerals & Plutonic Intrusions
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Gabbro, any of several medium- or coarse-grained rocks that consist primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive ...
Gabbro: A coarse-grained plutonic rock composed essentially of calcic plagioclase, pyroxene and iron oxides. The term gabbro was used originally by Italian ...
The meaning of GABBRO is a granular igneous rock composed essentially of calcic plagioclase, a ferromagnesian mineral, and accessory minerals.