geothermometry

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geothermometry

Earth science

Also known as: geological thermometry

Learn about this topic in these articles:

determination of marine temperatures

In geology: Isotopic geochemistry
…used as a form of geologic thermometer. The ratio of oxygen-16 to oxygen-18 in calcium carbonate secreted by various marine organisms from calcium carbonate in solution in seawater is influenced by the temperature of the seawater. Precise measurement of the proportions of oxygen-16 with respect to oxygen-18 in calcareous shells…
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mineral exploration

In Earth exploration: Geothermal methods
Temperature-gradient measurements are sometimes made to detect heat-flow anomalies; however, most exploration for geothermal resources (e.g., superheated water and steam) is done with indirect methods. Resistivity or seismic methods, for example, may be used to map the magma chamber, which is the source…
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