Pertaining to the movement of structures within the Earths crust
Pertaining to the movement of structures within the Earths crust
A heavy, brittle metal. Symbol, Ta
Rock broken from the upper reaches of a mountain or cliff
A pond or cavity used to allow the settling and possible neutralization of tailings material
Ore material leftover from initial processing
Coal used for the generation of electricity through combustion
A heavy, silvery-white metal. Symbol, Tl
A crystal form of four, equilateral triangle faces
A crystal structure having three symmetrical sides, alone or series
The period following the Cretaceous, from 65 to 1.8 million years ago