Origin: gr, the earth: cf. F. Geologie.
1. The science which treats: Of the structure and mineral constitution of the globe; structural geology. Of its history as regards rocks, minerals, rivers, valleys, mountains, climates, life, etc.; historical geology. Of the causes and methods by which its structure, features, changes, and conditions have been produced; dynamical geology. See chart of The geological series.
2. A treatise on the science.