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. 0
kalsit, mineral lempung, Feldspar, micas, quartz 0
aluminium oxide, cao, wesi (iii) oxide, kalium oxide, MgO, sodium oxide, silikon dioksida 0
udan biologi, udan kimia, udan mechanical 0
erosi kimia, erosi gisik 0