干旱区生态环境知识资源中心(Arid): Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman

Arid

DOI	10.1029/2021EA001637
	Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman
	Leask, Ellen K.; Ehlmann, Bethany L.; Greenberger, Rebecca N.; Pinet, Patrick; Daydou, Yves; Ceuleneer, Georges; Kelemen, Peter
通讯作者	Leask, EK ; Ehlmann, BL (corresponding author), CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA. ; Leask, EK (corresponding author), Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. ; Ehlmann, BL (corresponding author), CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA.
来源期刊	EARTH AND SPACE SCIENCE
EISSN	2333-5084
出版年	2021
卷号	8 期号:11
英文摘要	Visible-shortwave infrared (VSWIR) imaging spectrometers map composition remotely with spatial context, typically at many meters-scale from orbital and airborne data. Here, we evaluate VSWIR imaging spectroscopy capabilities at centimeters to sub-millimeter scale at the Samail Ophiolite, Oman, where mafic and ultramafic lithologies and their alteration products, including serpentine and carbonates, are exposed in a semi-arid environment, analogous to similar mineral associations observed from Mars orbit that will be explored by the Mars-2020 rover. At outcrop and hand specimen scales, VSWIR spectroscopy (a) identifies cross-cutting veins of calcite, dolomite, magnesite, serpentine, and chlorite that record pathways and time-order of multiple alteration events of changing fluid composition; (b) detects small-scale, partially altered remnant pyroxenes and localized epidote and prehnite that indicate protolith composition and temperatures and pressures of multiple generations of faulting and alteration, respectively; and (c) discriminates between spectrally similar carbonate and serpentine phases and carbonate solid solutions. In natural magnesite veins, minor amounts of ferrous iron can appear similar to olivine's strong 1-mu m absorption, though no olivine is present. We also find that mineral identification for carbonate and serpentine in mixtures with each other is strongly scale- and texture-dependent; similar to 40 area% dolomite in mm-scale veins at one serpentinite outcrop and similar to 18 area% serpentine in a calcite-rich travertine outcrop are not discriminated until spatial scales of
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000722485800016
WOS关键词	LOW-TEMPERATURE SERPENTINIZATION ; SPECTRAL REFLECTANCE ; MANTLE PERIDOTITES ; SEMAIL OPHIOLITE ; MINERALS ; ROCKS ; SEQUESTRATION ; GEOCHEMISTRY ; SECTION ; PHYLLOSILICATES
WOS类目	Astronomy & Astrophysics ; Geosciences, Multidisciplinary
WOS研究方向	Astronomy & Astrophysics ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373801
作者单位	[Leask, Ellen K.; Ehlmann, Bethany L.; Greenberger, Rebecca N.] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; [Leask, Ellen K.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA; [Ehlmann, Bethany L.] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA; [Pinet, Patrick; Daydou, Yves] Univ Toulouse, CNRS, Inst Rech Astrophys & Planetol IRAP, UPS,CNES, Toulouse, France; [Ceuleneer, Georges] Univ Toulouse, CNRS, Geosci Environm Toulouse GET, UPS, Toulouse, France; [Kelemen, Peter] Columbia Univ, Dept Earth & Environm Sci, Lamont Doherty Earth Observ, Palisades, NY USA
推荐引用方式 GB/T 7714	Leask, Ellen K.,Ehlmann, Bethany L.,Greenberger, Rebecca N.,et al. Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman[J],2021,8(11).
APA	Leask, Ellen K..,Ehlmann, Bethany L..,Greenberger, Rebecca N..,Pinet, Patrick.,Daydou, Yves.,...&Kelemen, Peter.(2021).Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman.EARTH AND SPACE SCIENCE,8(11).
MLA	Leask, Ellen K.,et al."Tracing Carbonate Formation, Serpentinization, and Biological Materials With Micro-/Meso-Scale Infrared Imaging Spectroscopy in a Mars Analog System, Samail Ophiolite, Oman".EARTH AND SPACE SCIENCE 8.11(2021).