2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
[R5P-02]Metamorphic temperature analysis of H chondrites: An attempt using revised Lindsley's pyroxene thermometer
*Ryo Uehara1, Yoshihiro Kuwahara2, Kazuhiko Shimada4, Yoshihiro Nakamuta3, Seiichiro Uehara4, Taturo Adachi5(1. Kyushu Uni. ISGS., 2. Kyushu Uni. SCS., 3. Kyushu Uni. Mus, 4. Kyushu Uni. Sci, 5. Kyushu Uni. Arch)
Keywords:
H chondrite,Lindsley pyroxene thermometer,Kosmoclor,Peak temperature,Onion-shell model
In order to accurately estimate the peak temperature of chondrites, Nakamuta et al. (2017) proposed the revised Lindsley’s pyroxene thermometer in which the kosmochlor component is newly added in the caluculation. Using the revised thermometer, they showed that the difference in temperature between Cpx and Opx in LL chondrites was less than 20°C. We have attempted to estimate the metamorphic temperatures of H chondrites (type 4 to 7) using the revised Lindsley’s pyroxene thermometer. Here we will report the results.