气候变化领域集成服务门户(CCPortal): Detection of widespread fluids in the Tibetan crust by magnetotelluric studies

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DOI	10.1126/science.1010580
	Detection of widespread fluids in the Tibetan crust by magnetotelluric studies
	Wei W.; Unsworth M.; Jones A.; Booker J.; Tan H.; Nelson D.; Chen L.; Li S.; Solon K.; Bedrosian P.; Jin S.; Deng M.; Ledo J.; Kay D.; Roberts B.
发表日期	2001
ISSN	0036-8075
起始页码	716
结束页码	718
卷号	292 期号:5517
英文摘要	Magnetotelluric exploration has shown that the middle and lower crust is anomalously conductive across most of the north-to-south width of the Tibetan plateau. The integrated conductivity (conductance) of the Tibetan crust ranges from 3000 to greater than 20,000 siemens. In contrast, stable continental regions typically exhibit conductances from 20 to 1000 siemens, averaging 100 siemens. Such pervasively high conductance suggests that partial melt and/or aqueous fluids are widespread within the Tibetan crust. In southern Tibet, the high-conductivity layer is at a depth of 15 to 20 kilometers and is probably due to partial melt and aqueous fluids in the crust. In northern Tibet, the conductive layer is at 30 to 40 kilometers and is due to partial melting. Zones of fluid may represent weaker areas that could accommodate deformation and lower crustal flow.
英文关键词	Electric conductance; Fluids; Geomagnetism; Magnetotelluric exploration; Geology; crustal structure; magnetotelluric method; partial melting; aqueous solution; article; conductance; geology; liquid; magnetism; melting point; priority journal; 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/245995
作者单位	Institute of Geophysical Research, University of Alberta, Edmonton, Alta. T6G 2JI, Canada
推荐引用方式 GB/T 7714	Wei W.,Unsworth M.,Jones A.,et al. Detection of widespread fluids in the Tibetan crust by magnetotelluric studies[J],2001,292(5517).
APA	Wei W..,Unsworth M..,Jones A..,Booker J..,Tan H..,...&Roberts B..(2001).Detection of widespread fluids in the Tibetan crust by magnetotelluric studies.Science,292(5517).
MLA	Wei W.,et al."Detection of widespread fluids in the Tibetan crust by magnetotelluric studies".Science 292.5517(2001).