nepheline-basanite, analcite-basanite lan leucite-basanite
gandheng tuff, tuff rhyolitic, basaltic tuff, trachyte tuff lan tuff andesitic.
clasts Gamelan kanggo tutul, gampang pecah dadi lancip piring, tahan struktural dhuwur marang erosi lan iklim, digunakake minangka Touchstone a
tansah ditemokake minangka pipo vulkanik liwat lemah ndhuwur Continental jero