Abstracts for fall meeting of the Japanese Society for Planetary Science
Abstracts 2007 Fall meeting of the Japanese Society for Planetary Sciences
Session ID : 223
Conference information

Oral Session 7: Primordial Earth and Degassing
Sep. 26, 13:20-14:59
Molecular species of impact-induced gas from carbonate mineral
*Kou KawaragiToshihiko KadonoSohsuke OhnoYasuhito SekineKo IshibashiKosuke KurosawaRyo IshimaruSeiji SugitaTakafumi Matsui
Author information


Meteorite impacts on the Earth induce the release of a huge amount of climatically active gases from the impacting body and crustal material under very high temperature and pressure condition. Here, we focused on the impact-induced degassing from carbonate minerals which is abundant on the Earth. Previous researches have assumed that impact-induced gas from carbonate is wholly CO2 [e.g. O'Keefe and Ahrens, 1989]. However, there is a prospect that the gas from carbonate contains CO which is stable under high temperature. The release of CO and its atmospheric chemical reactions may cause the increase of tropospheric ozone which has intensive greenhouse effect. Hence, when we consider the climatic effects caused by impact-induced gases from carbonate, it is very crucial problem whether the gas is CO or CO2. Now we conducted the impact-degassing experiments using a laser gun and specified the molecular species of impact-induced gas from carbonate.

Content from these authors
© 2007 The Japanese Society for Planetary Sciences
Previous article Next article