Formasi Trachyandesite

trachyandesite 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, biotite, olivine, plagioclase, pyroxene, sodic plagioclase

aluminium oxide, cao, wesi (iii) oxide, feo, kalium oxide, MgO, keda, sodium oxide, fosfor pentoxide, silikon dioksida, titanium dioxide

metamorphism cataclastic, kontak metamorphism, metamorphism regional

udan biologi, udan kimia, udan mechanical

erosi kimia, erosi gisik, banyu erosi, angin erosi