ignimbrites sing kawangun saka dicampur banget lingkungan diurutake saka awu vulkanik utawa tuff lan pumice lapilli, umum karo pecahan lithic kasebar.
obahe bumi bisa nimbulaké rocks dadi salah siji rumiyin disarèkaké utawa squeezed lan Empu rocks sing digawe panas lan sijine ing meksa gedhe.
apatite, biotite, kalsit, chlorite, Feldspar, hematite, hornblade, ilmenite, magnetite, olivine, pyroxene, quartz
apatite, augite, biotite, bronzite, kalsit, chert, epidote, Feldspar, hornblende, micas, plagioclase, pyroxene, quartz, sulfides, zirkon
ca, NaCl
aluminium oxide, cao, fe, feo, silikon dioksida, belerang
metamorphism kakubur, kontak metamorphism, hidrotermal metamorphism, impact metamorphism, metamorphism regional
ora ditrapake