trachyte iku sawijining rock vulkanik igneous karo aphanitic kanggo tektur porphyritic. iku padha karo vulkanik saka syenite rock lan formulir minangka asil diferensiasi magmatic.
augite, biotite, Feldspar, hornblade, plagioclase, quartz
kalium oxide, sodium oxide, silikon dioksida
metamorphism cataclastic, kontak metamorphism, metamorphism regional
udan biologi, udan kimia, udan mechanical
erosi kimia, erosi gisik, erosi Glacier, erosi segara, banyu erosi, angin erosi