When a plate of the earth crust is pushed back into the Earths mantle by the force of the descending plate
When a plate of the earth crust is pushed back into the Earths mantle by the force of the descending plate
Underground deposits of minerals formed by the precipitation of ground water
Physical geological features
A silvery-white metal. Symbol, Sr
A mineral formed by the compaction of sediment whose constituent is cyanophytes, also known as blue-green algae
A small discontinuous vein or shoot of mineralization
A downward arching fold in rock strata bedded rocks
A formal study pertaining to the specific characteristics of the geophysical or geochemical properties of the Earths surface
An orebody exposed at the Earths surface
Minerals deposited on or near surface by precipitation of descending solutions of genetically linked material