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Geothermobarometry

Geothermobarometry. Partioning of Fe, Mg with Temperature: The Garnet-Biotite Geothermometer. Fe, Mg have similar ionic radii, therefore volume change small. The Garnet-Biotite Exchange Geothermometer. 3. 3. 3. Garnet-Biotite Geothermometer Calibration. (Ferry and Spear, 1978).

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Geothermobarometry

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  1. Geothermobarometry

  2. Partioning of Fe, Mg with Temperature: The Garnet-Biotite Geothermometer Fe, Mg have similar ionic radii, therefore volume change small

  3. The Garnet-Biotite Exchange Geothermometer 3 3 3

  4. Garnet-Biotite Geothermometer Calibration (Ferry and Spear, 1978)

  5. Garnet Biotite Geothermometer 3

  6. The GASP Geobarometer V LHS = 3 x 100.7 = 300.21 cm3 DV = - 66.08 cm3

  7. The GASP Geobarometer

  8. Other Geobarometers Sphalerite GRIPS FeS content of Sph in equilibrium with Py and Po

  9. Application of Garnet-Biotite and GASP Geothermobarometry

  10. Application of Multiple Geothermobarometers

  11. P-T-t path application: Garnet-Biotite/GASP Geothermobarometry Sample from the Wopmay Orogen (St Onge, 1987) Gt-Bt: Hodges and Spear, 1982). GASP: Koziol (1988)

  12. Solvus geothermometers Alkali feldspar geothermometer Calcite geothermometer

  13. Oxygen Isotope Geothermometry Oxygen isotope fractionation factors

  14. P-T Conditions at Balmat Balmat

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