Vitrinite reflectance and Raman spectra of carbonaceous material as indicators of frictional heating on faults: Constraints from friction experiments

DOI Web Site Web Site 被引用文献7件 参考文献47件

書誌事項

公開日
2015-08
資源種別
journal article
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
DOI
  • 10.1016/j.epsl.2015.05.037
公開者
Elsevier BV

この論文をさがす

説明

Abstract Vitrinite reflectance (R o ) and Raman spectra of carbonaceous material (RSCM) are both widely used as indicators of the maximum attained temperatures in sedimentary and metamorphic rocks. However, the potential of these methods to estimate temperature increases associated with fault slip has not been closely studied. To examine this issue, friction experiments were conducted on a mixture of powdered clay-rich fault material and carbonaceous material (CM) at slip rates of 0.15 mm/s and 1.3 m/s in nitrogen (N 2 ) gas with or without distilled water. After the experiments, we measured R o and RSCM and compared to those in starting material. The results indicate that when fault material suffers rapid heating at >500 °C in ∼9 s at 1.3 m/s, R o and the intensity ratio of D1 and D2 Raman bands of CM (I D2 /I D1 ) markedly increase. Comminution with very small temperature rise in ∼32 min at 0.15 mm/s is responsible for very limited changes in R o and I D2 /I D1 . Our results demonstrate that R o and RSCM could be useful for the detection of frictional heating on faults when the power density is ≥0.52 MW/m 2 . However, the conventionally used R o and RSCM geothermometers are inadequate for the estimation of peak temperature during seismic fault slip. The reaction kinetics incorporating the effects of rapid heating at high slip rates and studies of the original microtexture and composition of CM are required to establish a reliable thermometer for frictional heating on faults.

収録刊行物

被引用文献 (7)*注記

もっと見る

参考文献 (47)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ