Wangun scoria nalika magma ngemot jumlah ageng mili gas dipun bibaraken saka gunung mbledhos sak jeblugan.
apatite, biotite, kalsit, Feldspar, hematite, hornblade, ilmenite, magnetite, olivine, pyroxene, quartz, silika
metamorphism kakubur, metamorphism cataclastic, kontak metamorphism
udan biologi, udan kimia, udan mechanical
erosi kimia, erosi gisik, erosi Glacier