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Itshe lesihlabathi elibomvu lesakhiwo sethayela lamatshe elimbozwe odongeni ngaphandle
Itshe lesihlabathi elibomvu liyidwala elivamile eliyi-sedimentary eliqanjwe ngalo ngenxa yombala walo obomvu. Lakhiwe kakhulu yi-quartz, i-feldspar kanye ne-iron oxides, amaminerali anikeza itshe lesihlabathi elibomvu umbala walo oyingqayizivele kanye nokuthungwa kwalo. Itshe lesihlabathi elibomvu lingatholakala ezindaweni ezahlukene zoqweqwe lomhlaba futhi litholakala ezindaweni eziningi emhlabeni jikelele.
