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  1. Geology | Definition, Examples, Rocks, Study, Importance, & Facts ...

    Sep 18, 2025 · Geology, the fields of study concerned with the solid Earth. Included are sciences such as mineralogy, geodesy, and stratigraphy. Geology also explores geologic history, which …

  2. Geology Definition & Meaning | Britannica Dictionary

    GEOLOGY meaning: 1 : a science that studies rocks, layers of soil, etc., in order to learn about the history of the Earth and its life; 2 : the rocks, land, processes of land formation, etc., of a …

  3. geology - Kids | Britannica Kids | Homework Help

    Geology is the study of the physical features and history of Earth. Scientists who work in geology are called geologists. Geology is an important science for many reasons. It…

  4. geology - Students | Britannica Kids | Homework Help

    What Is Geology? Geology is one of several related subjects commonly grouped as the Earth sciences, or geoscience. Geologists are Earth scientists concerned primarily with rocks and …

  5. Geology and its subdisciplines | Britannica

    geology, Scientific study of the Earth, including its composition, structure, physical properties, and history.

  6. Cleavage | Crystal Structure, Fracture & Mohs Scale | Britannica

    For further discussion, see geology: Study of the composition of the Earth. The goals of mineralogical studies may be quite diverse, ranging from the description and classification of a …

  7. Dike | Volcanic, Intrusive & Magma | Britannica

    Dike, in geology, tabular or sheetlike igneous body that is often oriented vertically or steeply inclined to the bedding of preexisting intruded rocks; similar bodies oriented parallel to the …

  8. Geology - Folds, Faults, Strata | Britannica

    Sep 18, 2025 · Geology - Folds, Faults, Strata: Structural geology deals with the geometric relationships of rocks and geologic features in general. The scope of structural geology is vast, …

  9. Erosion | Description, Causes, Facts, & Types | Britannica

    Oct 15, 2025 · A narrow and somewhat limiting definition of erosion excludes the transport of eroded material by natural agencies, but the exclusion of the transport phenomenon makes …

  10. Geology - Earth Composition, Rocks, Minerals | Britannica

    Sep 18, 2025 · Geology - Earth Composition, Rocks, Minerals: As a discipline, mineralogy has had close historical ties with geology. Minerals as basic constituents of rocks and ore deposits …