Articles | Volume 35, issue 4
https://doi.org/10.5194/ejm-35-499-2023
https://doi.org/10.5194/ejm-35-499-2023
Research article
 | 
18 Jul 2023
Research article |  | 18 Jul 2023

Metamorphic PT paths of Archean granulite facies metasedimentary lithologies from the eastern Beartooth Mountains of the northern Wyoming Province, Montana, USA: constraints from quartz-in-garnet (QuiG) Raman elastic barometry, geothermobarometry, and thermodynamic modeling

Larry Tuttle and Darrell J. Henry

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Cited articles

Alvaro, M., Mazzucchelli, M. L., Angel, R. J., Murri, M., Campomenosi, N., Scambelluri, M., Nestola, F., Korsakov, A., Tomilenko, A., and Marone, F.: Fossil subduction recorded by quartz from the coesite stability field, Geology, 48, 24–28, https://doi.org/10.1130/G46617.1, 2020. 
Angel, R. J., Mazzucchelli, M. L., Alvaro, M., Nimis, P., and Nestola, F.: Geobarometry from host-inclusion systems: The role of elastic relaxation, Am. Mineral., 99, 2146–2149, https://doi.org/10.2138/am-2014-5047, 2014. 
Angel, R. J., Alvaro, M., Miletich, R., and Nestola, F.: A simple and generalised P–T–V EoS for continuous phase transitions, implemented in EosFit and applied to quartz, Contrib. Mineral. Petr., 172, 29, https://doi.org/10.1007/s00410-017-1349-x, 2017. 
Angel, R. J., Murri, M., Mihailova, B., and Alvaro, M.: Stress, strain and Raman shifts, Z Krist-Cryst Mater, 234, 129–140, https://doi.org/10.1515/zkri-2018-2112, 2019. 
Angel, R. J., Gilio, M., Mazzucchelli, M., and Alvaro, M.: Garnet EoS: a critical review and synthesis, Contrib. Mineral. Petr., 177, 1–22, https://doi.org/10.1007/s00410-022-01918-5, 2022. 
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Short summary
Quartz inclusions in garnet are used to constrain the metamorphic pressure–temperature history of multiple ~2.8 Ga metasedimentary rocks from Montana, USA. Inclusion studies along with mineral and whole rock chemistry suggests that the rocks of interest experienced a clockwise metamorphic PT history that included isobaric heating to peak metamorphic temperatures once inclusions were entrapped. These findings place fundamental constraints on the PT evolution of this important geologic setting.