The science that deals with the earth’s physical structure and substance, its history, and the processes that act on it
The branch of geology that deals with the formation, occurrence, and exploitation of mineral deposits.
The branch of geology concerned with the formation, occurrence, and exploitation of oil and natural gas.
The study of the formation of rocks and the physical changes they undergo, as distinct from palaeontology.
The branch of geology concerned with the structure of rock formations, crustal regions, etc., and the way in which these have formed and developed; (also) the geological aspects of a formation, region, etc., studied from this perspective.
The branch of science and technology concerned with the application of geological principles and methods in engineering, especially with regard to the interaction of underlying geological formations with artificial structures.