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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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.