Articles | Volume 9, issue 1
https://doi.org/10.5194/se-9-223-2018
https://doi.org/10.5194/se-9-223-2018
Research article
 | 
27 Feb 2018
Research article |  | 27 Feb 2018

Structural disorder of graphite and implications for graphite thermometry

Martina Kirilova, Virginia Toy, Jeremy S. Rooney, Carolina Giorgetti, Keith C. Gordon, Cristiano Collettini, and Toru Takeshita

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Short summary
Graphite crystallinity “irreversibly” increases with temperature and it has been calibrated as a thermometer recording peak temperatures experienced by a rock. To examine the possibility of mechanical modifications of graphite structure and the impacts on graphite thermometry we performed deformation experiments. Raman spectroscopy demonstrates a reduction in crystallinity due to mechanical reworking in the brittle field. This finding clearly compromises the validity of the graphite thermometry.