gritstone jinis rock sedimentary kang kawangun ing jubin deltas kali sudhut ngendi celengan grit padha glethakaken mudhun, karo saben pasang utawa banjir mbuwang lapisan liya saka endhepan.
kalsit, mineral lempung, Feldspar, micas, quartz
aluminium oxide, cao, wesi (iii) oxide, kalium oxide, MgO, sodium oxide, silikon dioksida
udan biologi, udan kimia, udan mechanical