气候变化领域集成服务门户(CCPortal): Hot and dry deep crustal xenoliths from Tibet

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DOI	10.1126/science.287.5462.2463
	Hot and dry deep crustal xenoliths from Tibet
	Hacker B.R.; Gnos E.; Ratschbacher L.; Grove M.; McWilliams M.; Sobolev S.V.; Wan J.; Wu Z.
发表日期	2000
ISSN	0036-8075
起始页码	2463
结束页码	2466
卷号	287 期号:5462
英文摘要	Anhydrous metasedimentary and mafic xenoliths entrained in 3-million- year-old shoshonitic lavas of the central Tibetan Plateau record a thermal gradient reaching about 800°to 1000°C at a depth of 30 to 50 kilometers; just before extraction, these same xenoliths were heated as much as 200°C. Although these rocks show that the central Tibetan crust is hot enough to cause even dehydration melting of mica, the absence of hydrous minerals, and the match of our calculated P-wave speeds and Poisson's ratios with seismological observations, argue against the presence of widespread crustal melting.
英文关键词	mineral; crustal evolution; dehydration; shoshonite; xenolith; article; chemical composition; China; crystallization; geology; priority journal; rock; sediment; volcano; China
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/243909
作者单位	Geological Sciences, University of California, Santa Barbara, CA 93106, United States; Mineralogisch-Petrographisches Inst., University of Bern, Baltzerstrasse 1, CH-3012 Bern, Switzerland; Institut für Geologie, TU Bergakademie Freiberg, Bernhard-von-Cottastrasse 2, D-9596 Freiberg/Sachsen, Germany; Dept. of Earth and Space Sciences, 3806 Geology Building, Los Angeles, CA 90095-1567, United States; Geol. and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, United States; GeoForschungsZentrum Potsdam, Telegrafenberg A17, 14473 Potsdam, Germany; Institute of Geomechanics, Chinese Acad. of Geological Sciences, 11 Minzu Xueyuan Nanlu, Beijing, 100081, China
推荐引用方式 GB/T 7714	Hacker B.R.,Gnos E.,Ratschbacher L.,et al. Hot and dry deep crustal xenoliths from Tibet[J],2000,287(5462).
APA	Hacker B.R..,Gnos E..,Ratschbacher L..,Grove M..,McWilliams M..,...&Wu Z..(2000).Hot and dry deep crustal xenoliths from Tibet.Science,287(5462).
MLA	Hacker B.R.,et al."Hot and dry deep crustal xenoliths from Tibet".Science 287.5462(2000).