| 富含橄榄石的玄武岩模拟风化：对火星早期环境的启示(英文) |
| Laboratory-simulated Weathering of Olivine-rich Basalt in Methanol-thermal System: Implication for Early Martian Climate |
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| 摘要: 在有水的环境中，橄榄石会风化形成次生矿物。而火星的表面探测到大量的橄榄石，这使得过去的火星表面是否有水成为一个争议的问题。根据模拟实验结果我们曾在国际太阳系研究学报《ICARUS》上提出：火星的表面可能存在过有机物的海洋。本文以富含橄榄石的玄武岩为原料，在温度为80～160 ℃的甲醇体系中研究了富含橄榄石的玄武岩风化规律，并对风化后的样品进行了表征。XRD分析结果表明，风化实验中没有新的次生矿物形成。SEM结果表明，经过风化实验后的样品表面出现了物理风化的痕迹。该结果支持了我们先前提出的假设，也说明在大规 |
| 关键词: 橄榄石 风化 火星 大气 进化 |
| 基金项目: |
| Abstract: The detection of abundant olivine on Mars has led to hot debate over the history of water since olivine readily evolves to other minerals in the presence of water. Based on the experimental results, the hypothesis that early Mars may have had a methanol ocean has been published in Icarus. Olivine-rich basaltic materials are weathered in the laboratory under methanol-thermal conditions at temperatures of 80～160 ℃ and the alteration products are characterized. No additional secondary mineral phases are formed after methanol treatment, SEM images show physical weathering features. The experiment results presented here support the hypothesis that early Mars may have had a methanol ocean, suggesting that there has no substantial amount of liquid water on Mars since the formation of a large olivine deposits. |
| Keywords: olivine weathering Mars atmosphere evolution |
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| 唐艳,陈乾旺,陶楠,丁强.富含橄榄石的玄武岩模拟风化：对火星早期环境的启示(英文)[J].无机化学学报,2008,24(4):586-592. |
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