basalt alkalin, boninite, basalt alumina dhuwur, agêng segara Pegunungan basalt (morb), basalt tholeiitic, basaltic trachyandesite, mugearite lan shoshonite
hornblendite
tahan struktural dhuwur marang erosi lan iklim, rock grained banget nggoleki
clasts Gamelan kanggo tutul, global matrik, lumahan asring mengilap