...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >The Rio Tinto Mars analogue site: An extremophilic Raman spectroscopic study
【24h】

The Rio Tinto Mars analogue site: An extremophilic Raman spectroscopic study

机译：力拓·火星类似物站点：极端拉曼光谱研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Rio Tinto site is recognised as a terrestrial Mars analogue because of the presence of jarosite and related sulfates which have recently been identified by the NASA Mars Exploration Rover "Opportunity" in the El Capitan region of Meridiani Planum on Mars. It has long been known that acidophilic microbial action is responsible for the deep blood-red colour of the water in Rio Tinto, where the pH varies from about 1.5 to 3.0 and the water is rich in iron and sulfur. Following recent Raman spectroscopic characterisation of the mineral phases of the Rio Tinto system, we report here a study of the biological components found in several specimens of deposited minerals and near the waterside that were collected during a GeoRaman VI Conference organized field trip in 2006. Key biosignatures were found for carotenoids, scytonemin and mycosporine-like amino acids, which are indicative of the biological colonisation of exposed mineral substrates; information from this study will be useful for targeting Martian sites using a miniaturized Raman instrument where the biosignatures of relict or extant life could remain in the geological record. (c) 2006 Elsevier B.V. All rights reserved.
机译：力拓遗址被认为是火星的陆地类似物，因为存在黄钾铁矾和相关的硫酸盐，最近美国宇航局火星探测漫游车“机会”在梅里迪亚尼普拉努姆的埃尔卡皮坦地区发现了黄铁矿和相关的硫酸盐。长期以来，众所周知，嗜酸性微生物作用是力拓（Rio Tinto）水深红色的原因，那里的pH值在1.5至3.0之间变化，并且水中富含铁和硫。在最近对力拓（Rio Tinto）系统矿物相进行拉曼光谱表征之后，我们在此报告了对在2006年GeoRaman VI会议组织的实地考察中收集的一些沉积矿物标本和水边标本中发现的生物成分的研究。发现了类胡萝卜素，胞嘧啶和霉菌素样氨基酸的生物特征，这表明暴露的矿物质底物的生物定殖。这项研究提供的信息将有助于使用小型拉曼仪器将火星遗址定为目标，在那里遗留物或现存生物的生物特征可以保留在地质记录中。 （c）2006 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号