Geology terms helps us to explain the phenomena that occurs above, below and on the surface of Earth. These terms can help you gain a better understanding of geology. Learn more geology terms here.


Geodesy, the science of measuring the shape and size of the earth and of determining the exact location of points on the earth's surface.

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  • Hydrothermal Vent

    Hydrothermal Vent

    Hydrothermal Vent, a fissure, or crack, on the ocean floor from which heated water flows. See more »

  • Ignis Fatuus

    Ignis Fatuus

    Ignis Fatuus, a pale, greenish or bluish light sometimes seen hovering over swamps and marshes at night. See more »

  • International Geophysical Year (IGY)

    International Geophysical Year (IGY)

    International Geophysical Year (IGY), a period of extensive study of the earth by geophysicists and other scientists of many countries working in close cooperation. See more »

  • Marshes and Swamps

    Marshes and Swamps

    Marshes and Swamps, areas in which the land is usually covered with shallow water. See more »

  • Metallography


    Metallography, the microscopic study of the structure of metals and their alloys. See more »

  • Mineral Water

    Mineral Water

    Mineral Water, water containing dissolved mineral salts. The mineral salts may occur naturally in the water or they may be added to it. See more »

  • Moho


    Moho, or Mohorovicic Discontinuity, a zone in the earth below which shock waves travel more rapidly than they do above it. See more »

  • Moonstone


    Moonstone, a moderately hard, transparent or translucent gemstone with a pearly or milky luster. See more »

  • Oasis


    Oasis, (plural: oases), a fertile green area in a desert where water is available. See more »

  • Ore


    Ore, any naturally occuring material in the earth's crust containing one or more economically important minerals that can be profitably extracted. See more »

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