Geology

Earth science (also known as geoscience, the geosciences or the Earth sciences), is an all-embracing term for the sciences related to the pl...

▪ accretion ( veins ) ▪ accretion (tectonic) ▪ accretionary prism ▪ allochthonous nappe ▪ angular unconformity ▪ anatexis ▪ anticline ...

An accretionary prism, accretionary wedge, or accreted mélange is a wedge-shaped body of faulted and folded material accreted (added) to ...

Anatexis (loss of texture) is partial melting of rock under extreme conditions of temperature and pressure. Anatexis more often results fr...

Anticlines are upwardly convex folded structures that form arches with the youngest (last deposited) strata at the hinge. Anticlines are A-s...

Argillic or argillaceous refers to clay . Argillic alteration of rocks involves conversion of certain minerals to minerals of the clay gr...

Assimilation is that process of magmatic differentiation whereby ascending magmas evolve chemically by recruiting easily melted or dissol...

▪ back-arc basin ▪ Baltica ▪ banded (ribbon) vein ▪ basalt ▪ basaltic breccia ▪ batholith ▪ blended unconformity ▪ boudin ( vein ) ▪...