Question

______ is a rock with fine dark texture that makes up the oceanic crust

Answer 1

Basalt

Hope this helps (:

Answer 2

Igneous is a rock with fine dark texture that makes up the oceanic crust . Ocean crust is made up of mafic magma . It erupts  over the seafloor to make basalt lava flows or it may cools  down to form  the intrusive igneous rock gabbro . Igneous rock are further divided according to their mineral content.