Amadwala ngokuvamile akhiwa
Impendulo ithi: amaminerali.
Amadwala ayingxenye evamile yendawo yomhlaba, eyakhiwe ngaphezu kwezigidi zeminyaka ukushisa nokucindezela. Ngokuvamile aqukethe amaminerali ahlanganisa i-elementi eyodwa noma ngaphezulu. Amadwala angaba ngamajamo nobukhulu obuhlukene, futhi abe nezakhiwo eziningi ezahlukene ngokusekelwe kumaminerali akhiwe ngawo. Amatshe e-Metamorphic akheka lapho ukushisa nokucindezela kubangela amatshe akhona ngaphambili ukuthi aphinde acwebe, kuyilapho amadwala e-sedimentary akheka ngenxa yokunqwabelana kwezingcezu ezincane, njengesihlabathi, ushoki, i-saltpeter, noma izinsalela ze-fossilized. Ama-Rock asinikeza izinsiza ezihlukahlukene ezihlanganisa izinto zokwakha nemithombo kaphethiloli, futhi adlala indima ebalulekile ku-ecosystem yoMhlaba ngokuhlinzeka ngendawo yokuhlala yezinto eziphilayo.
