| タイトル | Chlorine Isotopes: As a Possible Tracer of Fluid/Bio-Activities on Mars and a Progress Report on Chlorine Isotope Analysis by TIMs |
| 本文（外部サイト） | http://hdl.handle.net/2060/20090006975 |
| 著者（英） | Nakamura, N.; Fujitani, T.; Nyquist, L.E.; Shih, C-Y.; Numata, M.; Okano, O.; Reese, Y. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2009-01-01 |
| 言語 | eng |
| 内容記述 | Significantly large mass fractionations between chlorine isotopes (Cl-35, Cl-37) have been reported for terrestrial materials including both geological samples and laboratory materials. Also, the chlorine isotopic composition can be used as a tracer for early solar system processes. Moreover, chlorine is ubiquitous on the Martian surface. Typical chlorine abundances in Gusev soils are approx.0.5 %. The global surface average chlorine abundance also is approx.0.5 %. Striking variations among outcrop rocks at Meridiani were reported with some chlorine abundances as high as approx.2%. Characterizing conditions under which chlorine isotopic fractionation may occur is clearly of interest to planetary science. Thus, we have initiated development of a chlorine isotopic analysis technique using TIMS at NASA-JSC. We present here a progress report on the current status of development at JSC and discuss the possible application of chlorine isotopic analysis to Martian meteorites in a search for fluid- and possibly biological activity on Mars. |
| NASA分類 | Geophysics |
| レポートNO | JSC-17680 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
|
