jinis
basalt alkalin, boninite, basalt alumina dhuwur, agêng segara Pegunungan basalt (morb) lan basalt tholeiitic
schists mica, schists calc-silicate, schists grafit, blueschists, whiteschists, greenschists, hornblende Schist, talc Schist, chlorite Schist, garnet Schist, Schist glaucophane.
fitur
tahan struktural dhuwur marang erosi lan iklim, rock grained banget nggoleki
gampang pecah dadi lancip piring, Gamelan kanggo tutul