syenites nepheline sing kawangun amarga aktivitas igneous alkalin lan umumé kawangun ing wilayah dharatan crustal nglukis utawa ing zona subduksi cordilleran.
basalt formulir nalika lahar tekan lumahing bumi near vulkanik. suhu lava iku antarane 1100 1250 ° c nalika nemu menyang permukaan.
albite, amphibole, biotite, cancrinite, Feldspar, hornblende, plagioclase, pyroxene, sodalite
olivine, plagioclase, pyroxene
aluminium oxide, cao, wesi (iii) oxide, feo, kalium oxide, MgO, keda, sodium oxide, fosfor pentoxide, silikon dioksida, titanium dioxide
aluminium oxide, cao, wesi (iii) oxide, feo, kalium oxide, MgO, keda, sodium oxide, fosfor pentoxide, silikon dioksida, titanium dioxide