CAJ | 학술논문

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,也说明在大规模的橄榄石形成后,火星表面不再有大量的水出现.
재유수적배경중,감람석회풍화형성차생광물.이화성적표면탐측도대량적감람석.저사득과거적화성표면시부유수성위일개쟁의적문제.근거모의실험결과아문증재국제태양계연구학보<ICARUS>상제출:화성적표면가능존재과유궤물적해양.본문이부함감람석적현무암위원료,재온도위80～160℃적갑순체계중연구료부함감람석적현무암풍화규률.병대풍화후적양품진행료표정.XRD분석결과표명,풍화실험중몰유신적차생광물형성.SEM결과표명,경과풍화실험후적양품표면출현료물리풍화적흔적.해결과지지료아문선전제출적가설,야설명재대규모적감람석형성후,화성표면불재유대량적수출현.
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 presenee 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 basaltie materials are weathered in the laboratory under methanol-thermal conditions at temperatures of 80～160℃ and the alteration products are charceterized. 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.