Oxychlorine Detection in Gale Crater, Mars and Implications for Past Environmental Conditions

Archer, P D, Jr ; Ming, D W ; Sutter, B ; Hogancamp, J V ; Morris, R V ; Clark, B C ; Mahaffy, P H ; Wray, J J ; Fairen, A G ; Gellert, R(University of Guelph, Guelph, Ontario, Canada)

关键词: OXYGEN COMPOUNDS;    CHLORINE COMPOUNDS;    PRESERVING;    MARS CRATERS;    EXTRATERRESTRIAL ENVIRONMENTS;    PERCHLORATES;    MARS SURFACE;    MARS (PLANET);    MARS SCIENCE LABORATORY;    CURIOSITY ROVER;    DRILLING;    ROVING VEHICLES;    GEOCHEMISTRY;    CHLORATES;   

RP-ID  :  JSC-E-DAA-TN64978

学科分类：天文学(综合)

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来源: NASA Technical Reports Server

【 摘 要 】

The Sample Analysis at Mars (SAM) instrument on the Mars Science Laboratory (MSL) rover Curiosity has analyzed 3 scooped samples and 15 drilled samples since landing in 2012. Oxychlorine compounds (perchlorate/chlorate) were detected in the first 9 drilled samples but have not been detected in the last 6, starting with the Oudam sample in the Hartmann’s Valley member of the Murray formation (Table 1). Scooped samples have all contained detectable oxychlorine. These results suggest that oxychlorine formation and preservation spans the geologic record on Mars but has not been uniform spatially or temporally.