geothermometry


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geothermometry

[¦jē·ō·thər′mäm·ə·trē]
(geology)
Measurement of the temperatures at which geologic processes occur or occurred. Also known as geologic thermometry.
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Assessment of Reservoir Temperatures of Thermal Springs of the Northern Areas of Pakestan by Chemical and Isotope Geothermometry, Geothermics, 31: 613-631.
Mercier, "Single-pyroxene geothermometry and geobarometry," The American Journal of Sciences, vol.
(1976) Geology, mineralogy, and fluid inclusions geothermometry of the El Paso gold mine, Cripple Creek, Colorado.
Coexisting low- and high-Ca pyroxene compositions are related to temperature allowing two-pyroxene geothermometry (Davidson and Lindsley, 1985).
Finally, the observed fractal shape of sutured quartz grain boundary has its implications for geothermometry (Kruhl & Nega 1996).
The purpose of this study is to thoroughly describe the tectonic fabric of large (1-3 cm dia.), zoned, helicitic, calcium-rich almandine garnets from the Hyde School Marginal Mylonite of the Adirondack Lowlands and to date (U-Pb) monazite inclusions in the cores and rims to verify the hypothesis that there were two episodes of garnet growth, currently based upon textural observations, chemical zoning, and geothermometry. These growth periods have been previously interpreted as occurring during forceful intrusion of the Hyde School composite granitoid (ca.
Thus, apart from phenomena related to geothermometry, temperatures go from extremes of 176[degrees]F to 126[degrees]F (80[degrees]C to -88[degrees]C).
Sampling methods, data handling, interpretation," in Geothermometry, S.
In terms of magma geothermometry, apatite saturation temperature (AST) calculated using [P.sub.2][O.sub.5] abundance and compositional corrections was estimated for the Lake George granodiorite to be 902 [+ or -] 14[degrees]C.
1) Geothermometry based on the Si[O.sub.2]-Quartz equilibrium, imposed by the characteristics of these geothermal systems.
117-267, on the theme "Geothermometry and geochronology using clay minerals".