jinis
translocated gossan lan gossan bocor
basalt alkalin, boninite, basalt alumina dhuwur, agêng segara Pegunungan basalt (morb), basalt tholeiitic, basaltic trachyandesite, mugearite lan shoshonite
fitur
clasts Gamelan kanggo tutul, gampang pecah dadi lancip piring
tahan struktural dhuwur marang erosi lan iklim, rock grained banget nggoleki