Extending the applicability of the Raman carbonaceous-material geothermometer using data from contact metamorphic rocks

M. Aoya, Y. Kouketsu, S. Endo, H. Shimizu, T. Mizukami, Daisuke Nakamura, S. Wallis

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112 Citations (Scopus)

Abstract

The degree of graphitization of carbonaceous material (CM) has been widely used as an indicator of metamorphic grade. Previous work has demonstrated that peak metamorphic temperature (T) of regional metamorphic rocks can be estimated by an area ratio (R2) of peaks recognized in Raman spectra of CM. The applicability of this method to low-pressure ( 50) that adequately reflects the range of sample heterogeneity. Using this procedure (with 532-nm laser) and adapting our new calibration, the errors of the Raman CM geothermometer for contact metamorphic rocks decrease to ±30 °C.

Original languageEnglish
Pages (from-to)895-914
Number of pages20
JournalJournal of Metamorphic Geology
Volume28
Issue number9
DOIs
Publication statusPublished - Dec 2010

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Keywords

  • Carbonaceous material
  • Contact metamorphism
  • Daimonji and Kasuga areas
  • Geothermometer
  • Raman spectroscopy

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

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