Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.
Asemanari:
->roci sedimentare , de exemmplu : nisip , pietris, argila
->sunt foarte frecvente alunecarile de teren in aceste zone
->sunt format in era neozoic
Deosebiri:
->Depres. col a Trans: -> are inaltimi > 100 m
-> Pod. Moldoveni -> inaltimi foarte foarte mici
-> Depres. col a Trans ->exista domuri cu metan [CH4]
-> Pod. Moldovei -> nu exista domuri
->Depres.col a Trans-> are depresiuni in munti
->Pod. Moldoveni -> nu are depresiuni , e neted
In rain storms methane gases into carbon, as it falls it turns into pieces of graphite and then into diamonds.
