Experimental investigation and application of garnet granulite equilibria

Bohlen, Steven R.; Wall, V. J.; Boettcher, A. L.

doi:10.1007/bf00373079

Cited by 154 publications

(60 citation statements)

References 49 publications

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“…8a shows the most likely prograde PT-path indicated by the grossular zonation in garnet. Grt-Bt (Kleemann and Reinhardt, 1994), Grt-Ilm (Pownceby et al, 1991) thermometers and GASP (R1) and GRAIL (R2, Bohlen et al, 1983) barometers applied to the same metapelitic sample yield peak PT conditions of 770-810°C and 7.5-9.5 kbar (Fig. 8b).…”

Section: Tsavo East National Park/galana River East (Unit 1)mentioning

confidence: 93%

Pan-African high pressure granulites from SE-Kenya: Petrological and geothermobarometric evidence for a polycyclic evolution in the Mozambique belt

Hauzenberger

Bauernhofer

Hoinkes

et al. 2004

Journal of African Earth Sciences

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Section: Tsavo East National Park/galana River East (Unit 1)mentioning

confidence: 93%

Pan-African high pressure granulites from SE-Kenya: Petrological and geothermobarometric evidence for a polycyclic evolution in the Mozambique belt

Hauzenberger

Bauernhofer

Hoinkes

et al. 2004

Journal of African Earth Sciences

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“…Calibrations of Bohlen et al (1983) 9.3 9.0 9.4 9.7 9.3 9.4 4.1 4.1 4.2 4.1 Perkins and Chipera (1985), P Mg 10.2 9.8 10.3 10.5 9.8 9.7 6.4 6.7 6.0 6.4 Perkins and Chipera (1985), P Fe 9.7 9.3 9.8 10.1 9.7 9.8 5.2 5.2 5.4 5.2 Eckert et al (1991) 9.5 9.2 9.9 10.2 9.6 9.2 6.2 6.8 5.9 6.4 Bhattacharya et al (1991), P Mg 9.3 8.8 9.3 9.6 9.0 8.9 6.3 6.7 5.7 6.2 Bhattacharya et al (1991) Eckert et al (1991) 9.8 9.3 9.8 9.9 9.3 9.9 6.7 7.2 5.9 6.4…”

Section: Thermal Peak Stagementioning

confidence: 99%

Ultrahigh-temperature mafic granulites from Panrimalai, south India: Constraints from phase equilibria and thermobarometry

Prakash

Arima

Mohan

2007

Journal of Asian Earth Sciences

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“…CFAS systems (cf. Perkins and Newton, 1981;Bohlen et al, 1983;Berman, 1988;Holland and Powell, 1990), as well as adequate activity models for the participating phases.…”

Section: Control Of Mineral Compositions By Net-transfer Reactions: Tmentioning

confidence: 99%

Geothermometry and geobarometry of high-grade rocks: a case study on garnet-pyroxene granulites in southern Sri Lanka

Faulhaber

Raith

1991

Mineral. mag.

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In the central granulite belt of Sri Lanka, garnet-pyroxene granulites of granitic and gabbro-noritic composition are the most abundant rock types. The micro-structures and mineral chemistry data prove complete attainment of textural and large-scale chemical equilibrium during and following a phase of extreme penetrative deformation at conditions of the granulite facies (800-850 ~ 5 to 9 kbar). On a local scale, especially along the intergranular system, continued cation exchange decoupling from the early ceasing net-transfer reactions destroyed the near-peak metamorphic equilibrium. The extreme compositional variation of the coexisting ferro-magnesian phases (Fe/(Fe + Mg): gar 0.98-0.65, opx 0.92-0.40, cpx 0.88-0.28) and the near-isothermal conditions of equilibration throughout the studied area enabled examination of the effects of non-ideal mixing in garnet and pyroxenes on the equilibrium constants of reactions used in geothermobarometry, and tests on the quality of commonly applied thermometers/barometers and the validity of activity models adopted in the calibrations. The Sri Lankan data set reveals more or less pronounced compositional dependences for all of the tested garopx/gar-cpx Fe-Mg exchange thermometers and the opx + pig ~ gar + qtz barometers. Evidently the recommended solution models do not adequately describe the mixing properties of the involved ferromagnesium mineral phases (garnet, orthopyroxene and clinopyroxene).

show abstract

Experimental investigation and application of garnet granulite equilibria

Cited by 154 publications

References 49 publications

Pan-African high pressure granulites from SE-Kenya: Petrological and geothermobarometric evidence for a polycyclic evolution in the Mozambique belt

Pan-African high pressure granulites from SE-Kenya: Petrological and geothermobarometric evidence for a polycyclic evolution in the Mozambique belt

Ultrahigh-temperature mafic granulites from Panrimalai, south India: Constraints from phase equilibria and thermobarometry

Geothermometry and geobarometry of high-grade rocks: a case study on garnet-pyroxene granulites in southern Sri Lanka

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