Obsidian lan Trachyandesite Definition
definisi
obsidian punika kaca vulkanik alami kawangun minangka rock igneous extrusive. diprodhuksi nalika lahar felsic extruded saka gunung mbledhos ndingin kanthi cepet karo wutah kristal minimal
trachyandesite iku sawijining igneous rock extrusive.
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka french trachyandésite, trachy + andesit awujud, a lahar penengah ing komposisi antarane trachyte lan awujud
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kategori liyane
rock opaque
rock grained nggoleki, rock opaque