Apatite Saturation Thermometry of the Kozhim Granite Massif (the Subpolar Urals)

Saturation thermometry based on the rock level of the substance organization occupies a special place among the variety of existing methods for determining temperature. This method allows the individual accessory minerals to be used as natural geothermometers. When studying the rocks of the Kozhim massif, M. Fishman and his colleagues found that the temperature of rock formation did not exceed 720 °C. In the present work, apatite saturation thermometry was used to confirm the temperature regime of the rocks under consideration. Using Watson and Bea formulas, the saturation temperatures for apatite and apatite-containing rocks were estimated from 722 to 856° C. The obtained temperature range was similar to the temperatures obtained earlier by the author using evolutionary crystal morphological analysis for the zircon of the studied massif.