气候变化领域集成服务门户(CCPortal): Unique meteorite from early Amazonian Mars: Water-rich basaltic breccia Northwest Africa 7034

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DOI	10.1126/science.1228858
	Unique meteorite from early Amazonian Mars: Water-rich basaltic breccia Northwest Africa 7034
	Agee C.B.; Wilson N.V.; McCubbin F.M.; Ziegler K.; Polyak V.J.; Sharp Z.D.; Asmerom Y.; Nunn M.H.; Shaheen R.; Thiemens M.H.; Steele A.; Fogel M.L.; Bowden R.; Glamoclija M.; Zhang Z.; Elardo S.M.
发表日期	2013
ISSN	0036-8075
起始页码	780
结束页码	785
卷号	339 期号:6121
英文摘要	We report data on the martian meteorite Northwest Africa (NWA) 7034, which shares some petrologic and geochemical characteristics with known martian meteorites of the SNC (i.e., shergottite, nakhlite, and chassignite) group, but also has some unique characteristics that would exclude it from that group. NWA 7034 is a geochemically enriched crustal rock compositionally similar to basalts and average martian crust measured by recent Rover and Orbiter missions. It formed 2.089 ± 0.081 billion years ago, during the early Amazonian epoch in Mars' geologic history. NWA 7034 has an order of magnitude more indigenous water than most SNC meteorites, with up to 6000 parts per million extraterrestrial H2O released during stepped heating. It also has bulk oxygen isotope values of Δ17O = 0.58 ± 0.05 per mil and a heat-released water oxygen isotope average value of Δ17O = 0.330 ± 0.011 per mil, suggesting the existence of multiple oxygen reservoirs on Mars.
英文关键词	apatite; calcium phosphate; carbon; ferric hydroxide; hydroxide; isosorbide dinitrate; isotope; lanthanide; lanthanum; oxygen; potassium; rubidium 87; sodium; stable isotope; strontium 86; unclassified drug; water; ytterbium; basalt; breccia; crustal structure; extraterrestrial matter; geochemistry; heating; Mars; meteorite; oxygen isotope; petrology; satellite mission; article; astronomy; basalt; chemical composition; electron probe microanalysis; geochemistry; mass spectrometry; petrology; priority journal; radiometric dating; rock; Africa; Amazonia
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242777
作者单位	Institute of Meteoritics, University of New Mexico, Albuquerque, NM 87131, United States; Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, United States; Department of Chemistry and Biochemistry, University of California, San Diego, San Diego, CA 92093, United States; Geophysical Lab., Carnegie Institution of Washington, Washington, DC 20005, United States; School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
推荐引用方式 GB/T 7714	Agee C.B.,Wilson N.V.,McCubbin F.M.,et al. Unique meteorite from early Amazonian Mars: Water-rich basaltic breccia Northwest Africa 7034[J],2013,339(6121).
APA	Agee C.B..,Wilson N.V..,McCubbin F.M..,Ziegler K..,Polyak V.J..,...&Elardo S.M..(2013).Unique meteorite from early Amazonian Mars: Water-rich basaltic breccia Northwest Africa 7034.Science,339(6121).
MLA	Agee C.B.,et al."Unique meteorite from early Amazonian Mars: Water-rich basaltic breccia Northwest Africa 7034".Science 339.6121(2013).