geology terms library
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.
Featured Article: 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 »
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Articles 1-20 of 35
Alluvium
Alluvium, the silt, clay, sand, and other material transported and deposited by running water.
See more »Artesian Well
Artesian Well, a well in which water rises under its own pressure, without pumping.
See more »Assaying
Assaying, a process for determining the amount of a certain metal contained in an ore or alloy.
See more »Cave
Cave, an underground cavity in the earth's crust. Cavern is a synonymous word, but is sometimes used to indicate a very large cave.
See more »Crystal
Crystal, a solid body formed by atoms, ions, or molecules arranged in a regular, three-dimensional pattern.
See more »Dike
Dike, in geology, a body of diabase or some other igneous rock that, while in the molten state, filled a fissure (crack) in some other rock.
See more »Dust
Dust, fine particles of earth or other matter capable of being carried by currents of air.
See more »Earth Science
Earth Science, a general term for the fields of study that deal with the earth as a physical object.
See more »Geochemistry
Geochemistry, the application of the science of chemistry to the study of the earth.
See more »Geode
Geode, a hollow, rounded mineral body. A typical geode contains an outer layer of chalcedony, or fine-grained quartz, lined on the inside with crystals of quartz, calcite, or some other mineral.
See more »Geodesy
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.
See more »Geophysics
Geophysics, the application of the science of physics to the study of the earth.
See more »Glacial Period
Glacial Period, or Ice Age, a time when continental glaciers, resembling those now on Greenland and Antarctica, covered almost a third of the world's land surface.
See more »Hot Spring
Hot Spring, or Thermal Spring, a spring that discharges water warmer than normal body temperature.
See more »Hydrosphere
Hydrosphere, the waters of the earth. Oceans, lakes, rivers, and glaciers cover about three-fourths of the earth's surface, and groundwater is present in most rock structures.
See more »Hydrothermal Vent
Hydrothermal Vent, a fissure, or crack, on the ocean floor from which heated water flows.
See more »Ice
Ice, frozen water. (Dry ice is not frozen water, but carbon dioxide in solid form) Under ordinary conditions, water changes to ice at 32 F.
See more »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), 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, areas in which the land is usually covered with shallow water.
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