Retrieving "Mafic Rock" from the archives
Cross-reference notes under review
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Gabbro
Linked via "mafic"
Gabbro is a coarse-grained, intrusive igneous rock that is chemically equivalent to basalt. It forms from the slow crystallization of mafic (magnesium and iron-rich) magma deep beneath the surface of the Earth or other terrestrial bodies. Gabbro is a fundamental component of the lower crust, particularly within oceanic lithosphere, and its characteristic mineralogy and texture are crucial for understanding deep crustal dynamics and [planetary accre…
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Seafloor Spreading
Linked via "mafic"
The primary site of seafloor spreading is the global network of mid-ocean ridges (MORs), which function as constructive plate boundaries. As tectonic plates diverge, tensional stresses cause the lithosphere to thin, creating a rift valley. Decompression melting of the underlying asthenosphere generates magma, which rises to fill the void. This magma solidifies to form new [basaltic](/entries/…