Astromaterials Research and Exploration Science Directorate, NASA Johnson Space Center, Houston, TX 77058, USA.
Science. 2014 Jan 24;343(6169):1245267. doi: 10.1126/science.1245267. Epub 2013 Dec 9.
H2O, CO2, SO2, O2, H2, H2S, HCl, chlorinated hydrocarbons, NO, and other trace gases were evolved during pyrolysis of two mudstone samples acquired by the Curiosity rover at Yellowknife Bay within Gale crater, Mars. H2O/OH-bearing phases included 2:1 phyllosilicate(s), bassanite, akaganeite, and amorphous materials. Thermal decomposition of carbonates and combustion of organic materials are candidate sources for the CO2. Concurrent evolution of O2 and chlorinated hydrocarbons suggests the presence of oxychlorine phase(s). Sulfides are likely sources for sulfur-bearing species. Higher abundances of chlorinated hydrocarbons in the mudstone compared with Rocknest windblown materials previously analyzed by Curiosity suggest that indigenous martian or meteoritic organic carbon sources may be preserved in the mudstone; however, the carbon source for the chlorinated hydrocarbons is not definitively of martian origin.
在好奇号漫游车于火星盖尔陨石坑内的耶利哥湾采集的两块泥岩样本的热解过程中，产生了 H2O、CO2、SO2、O2、H2、H2S、HCl、含氯碳氢化合物、NO 和其他痕量气体。H2O/OH 含相包括 2:1 层状硅酸盐、硬石膏、纤铁矿和无定形物质。碳酸盐的热分解和有机物质的燃烧是 CO2 的可能来源。O2 和含氯碳氢化合物的同时演化表明存在氧氯相。硫化物可能是含硫物质的来源。与好奇号此前分析的罗内克风成物质相比，泥岩中含氯碳氢化合物的丰度较高，这表明在泥岩中可能保存了火星本土或陨石源的有机碳，但含氯碳氢化合物的碳源并非源自火星。
