tephrite punika, hard rock nggoleki-grained kang jinis metasomatite, ateges ngrubah basalt. iku formulir karo utawa tanpa crystallization, salah siji ngisor permukaan minangka rocks intrusive utawa ing lumahing minangka rocks extrusive.
Feldspar alkali, nepheline, plagioclase, pyroxene
cao, karbon dioksida, MgO, silikon dioksida
metamorphism cataclastic, kontak metamorphism, impact metamorphism, metamorphism regional
udan biologi, udan kimia, udan mechanical
erosi kimia, erosi gisik, erosi Glacier, erosi segara, banyu erosi