Linked from
The 13 pages that link to Gabbro, each with the reason it gives.
Oceanic crustRelated: Gabbro forms much of the lower crust beneath the basaltic lavas.
Igneous rockBroader topic: Gabbro shows how basalt-like magma crystallizes slowly at depth.
PyroxeneRelated: Its abundant pyroxene records slow crystallization deep in the crust.
AmphiboliteRelated: Gabbro is another common mafic protolith for amphibolite.
DioriteCompared with: Gabbro is darker and more magnesium- and iron-rich than diorite.
AugiteRelated: Visible augite crystals commonly occur with plagioclase in gabbro.