close up natural crackle pattern in rock

abstract angled architectural asbestos bedrock blue boundary canadian carving chemical close crackled crust deep define discontinuity earth geologically geology green greenish gros heat igneous iron lawrence lithology lithosphere magnesium mantle margins material metamorphism mineral moho mohortovicic morne national newfoundland olivine park pattern patterns peridotite permineralization planet pyroxene rectangular resembling resource right rock sample serpentine serpentinite serpentinization skin snake soapstone steatite stone surface tablelands unesco unique white natural crackle