University of Tokyo Graduate School of Science
University of Tokyo Graduate School of Science
University of Tokyo Graduate School of Science
University of Tokyo Graduate School of Science
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第37回月・惑星シンポジウム
雑誌名(英)
Proceedings of the 37th ISAS Lunar and Planetary Symposium
ページ
224 - 227
発行年
2004-02
抄録（英）
The cooling rate (and burial depth) was recalculated by using different diffusion coefficients from those used in the previous studies on the basis of the Fe-Mg and CaO chemical zoning profiles observed for pallasite (Esquel) olivine. The cooling rate obtained from the Fe-Mg zoning profile is broadly consistent with that from the CaO profile and is 2 to 5 C/yr (300 to 200 m in depth) for cooling from 1,100 C. The results of recalculation for the cooling rate also show a relatively fast cooling at the high-temperature range. Therefore, a shallow origin for pallasites during high temperature should be further explored.
Evaluation of the cooling rate for pallasite calculated by diffusional modification: Fe-Mg and CaO zoning of olivine
