Gabbro is a dark-colored coarse-grained intrusive igneous rock. Igneous rock composition chart: A chart that illustrates the generalized mineral composition of igneous rocks. Gabbros are intrusive igneous rocks that cool slowly and have coarse-grained crystals. Two such polymorphs that are prevalent all over the globe are gabbro and basalt. The reason why they are so common is because they are formed directly from. Gabbro 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.
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 . Learn about gabbro, a dark colored, mafic igneous rock that is the intrusive equivalent to extrusive basalt. It has uses as a building and art. Gabbro is an igneous rock, is coarse-grained, dark-colored and intrusive. It is usually Gabbro is related to basalt because it is equivalent in its composition.
As the JOIDES Resolution has continued to drill deeper into the hole beneath us, the type of rock we are drilling has changed. Near the surface of the ocean. FIGURE Gabbro is dark gray to greenish black color plutonic rock and chemically equivalent to volcanic basalt. The rock mainly contains Ca– plagioclase. Gabbro can be formed as a massive uniform intrusion or as similar massive gabbro intrusions and coeval basalt. Gabbro vs. Basalt. Leave a reply. One thing that has jumped out at me Gabbro is formed when liquid rock is cooled deep underground, very.