Petrogenesis, also known as petrogeny, is a branch of petrology dealing with the origin of igneous rocks. Petrology is the discipline of geology that studies rocks. ...
formation or development of rocks
(from the article `Poldervaart, Arie`) ...until 1949, when he joined the Bechuanaland Protectorate (now Botswana) Geological Survey; he became a member of the faculty of Columbia ...