首页> 外文期刊>Planetary and space science >Secondary sulfate mineralization and basaltic chemistry of craters of the Moon National Monument, Idaho: Potential martian analog
【24h】

Secondary sulfate mineralization and basaltic chemistry of craters of the Moon National Monument, Idaho: Potential martian analog

机译:爱达荷州月亮国家纪念碑的火山口的二次硫酸盐矿化和玄武岩化学:潜在的火星类似物

获取原文
获取原文并翻译 | 示例
           

摘要

Craters of the Moon National Monument (COM) basalts offer a reasonable analog to martian basalts, as they have elevated iron concentrations compared to traditional terrestrial analogs. Although secondary sulfate minerals on the evaporitic regions of-Mars consist primarily of Mg-, Ca-, and Fe-bearing sulfate minerals, recent orbiter spectroscopic data have suggested Na-sulfate minerals may be present. Secondary minerals in the basaltic caves of COM in southern Idaho are white, efflorescent deposits in small cavities along the cave walls and ceilings and localized mounds on the cave floors. These deposits were examined using X-ray powder diffraction (XRD), X-ray fluorescence spectrometry (XRF), Fourier transform infrared spectrometry (FTIR), and laser desorption Fourier transform ion cyclotron mass spectrometry (LD-FTICRMS). The secondary mineral assemblages were dominated by Na-sulfate minerals (thenardite, mirabilite) with a small fraction of the deposits containing minor concentrations of Na-carbonate minerals. Based on thermodynamic modeling results, formation of the deposits was attributed to leaching of basalt minerals by meteoritic water followed by evaporation of solutions. Such deposits could form under similar conditions in basaltic caves on Mars, making caves an excellent target for astrobiological investigations.
机译:月球国家纪念碑(COM)玄武岩的火山口提供了火星玄武岩的合理类似物,因为与传统的陆地类似物相比,它们的铁浓度更高。尽管火星蒸发区的次生硫酸盐矿物主要由含Mg,Ca和Fe的硫酸盐矿物组成,但最近的轨道光谱数据表明可能存在Na硫酸盐矿物。爱达荷州南部COM的玄武岩洞穴中的次生矿物是白色的,风化的沉积物,沉积在沿洞穴壁和天花板的小空腔中,以及位于洞穴底部的局部土堆。使用X射线粉末衍射(XRD),X射线荧光光谱(XRF),傅里叶变换红外光谱(FTIR)和激光解吸傅里叶变换离子回旋质谱(LD-FTICRMS)检查这些沉积物。次生矿物组合以硫酸钠矿物质(钠长石,芒硝)为主,其中一小部分矿床中含有少量的碳酸钠矿物质。根据热力学模型结果,沉积物的形成归因于陨石水浸出玄武岩矿物,然后溶液蒸发。这种沉积物可能在类似的条件下在火星上的玄武岩洞穴中形成,使洞穴成为天体生物学研究的绝佳目标。

著录项

  • 来源
    《Planetary and space science》 |2012年第1期|p.93-103|共11页
  • 作者单位

    Geosdences Department, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA;

    Geosdences Department, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA;

    Department of Geosdences, University of Wisconsin-Milwaukee, 3209N Maryland Avenue, Wl 53201, USA;

    Geosdences Department, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA,Leiden Institute of Chemistry, Gorlaeus Laboratories, Einsteinweg 55, 2333 CC Leiden, The Netherlands;

    Department of Geosdences, University of Wisconsin-Milwaukee, 3209N Maryland Avenue, Wl 53201, USA;

    Geosdences Department, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA,Chemical Sciences, Idaho National Laboratory, 1765N Yellowstone Hwy., Idaho Falls, ID 83415, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    thenardite; caves; mars; secondary sulfate mineralization; evapo rites;

    机译:芒硝洞穴火星;二次硫酸盐矿化;逃犯;

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