The Collaborative International Dictionary
Geology \Ge*ol"o*gy\, n.; pl. Geologies. [Gr. ge`a, gh^, the earth + -logy: cf. F. g['e]ologie.]
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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.
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A treatise on the science.
Note: The science of geology, as treating of the history of the globe, involves a description of the different strata which compose its crust, their order of succession, characteristic forms of animal and vegetable life, etc. The principal subdivisions of geological time, and the most important strata, with their relative positions, are often indicated in a diagram called "The Geological Series"
Wiktionary
n. (plural of geology English)
Usage examples of "geologies".
It was a strange landscape, an odd combination of different geologies jumbled together in a way Lumi-nara had not encountered previously.