DOI: 10.1002/2014GL062533
论文题名: Inventory of H2O in the ancient Martian regolith from Northwest Africa 7034: The important role of Fe oxides
作者: Muttik N. ; McCubbin F.M. ; Keller L.P. ; Santos A.R. ; McCutcheon W.A. ; Provencio P.P. ; Rahman Z. ; Shearer C.K. ; Boyce J.W. ; Agee C.B.
刊名: Geophysical Research Letters
ISSN: 0094-9500
EISSN: 1944-9231
出版年: 2014
卷: 41, 期: 23 起始页码: 8235
结束页码: 8244
语种: 英语
英文关键词: ancient Martian regolith breccia
; hydrous phases
; Martian meteorites
; NWA 7034
; water in NWA 7034
Scopus关键词: Fourier transform infrared spectroscopy
; Nanocrystals
; Petrography
; Phosphate minerals
; Rocks
; Transmission electron microscopy
; X ray diffraction
; Hydrous phasis
; Martian meteorites
; Martian regolith
; Mass-balance calculations
; NWA 7034
; Phase distribution
; Powder X ray diffraction
; Structural component
; Silicates
; apatite
; mass balance
; mineral resource
; oxide
; regolith
; rock property
; Africa
英文摘要: Water-rich Martian regolith breccia Northwest Africa (NWA) 7034 was analyzed by Fourier transform infrared spectroscopy and transmission electron microscopy to determine the inventory and phase distribution of H2O (used herein to refer to both molecular H2O and OH- structural components in hydrous minerals). Hydrous Fe oxide phases (hydromaghemite and an unidentified nanocrystalline Fe-bearing oxide phase observed with hydromaghemite) and phyllosilicates (saponite) were identified as the primary mineralogic hosts for H2O with a minor contribution from Cl-rich apatite. Based on mass balance calculations and modal abundances of minerals constrained by powder X-ray diffraction and petrography, we can account for the entire 6000 ppm H2O measured in bulk rock analyses of NWA 7034. This H2O is distributed evenly between hydrous Fe-rich oxides and phyllosilicates, indicating that Fe oxides could be as important as phyllosilicates for H2O storage in Martian surface material. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921600876&doi=10.1002%2f2014GL062533&partnerID=40&md5=a1b48b549c61ee07a5b6a35466ce4e8c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6764
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Meteoritics, University of New Mexico, Albuquerque, NM, United States
Recommended Citation:
Muttik N.,McCubbin F.M.,Keller L.P.,et al. Inventory of H2O in the ancient Martian regolith from Northwest Africa 7034: The important role of Fe oxides[J]. Geophysical Research Letters,2014-01-01,41(23).