地质与地球物理研究所兰州油气资源研究中心机构知识库
Advanced  
LIG OpenIR  > 油气地球化学研究室  > 期刊论文
题名: Calculation of temperature differences between the sunny slopes and the shady slopes along railways in permafrost regions on Qinghai-Tibet Plateau
作者: Chou Ya-ling ; Sheng Yu ; Wei Zhen-ming ; Ma Wei
刊名: COLD REGIONS SCIENCE AND TECHNOLOGY
出版日期: 2008
卷号: 53, 期号:3, 页码:346-354
关键词: Regression equation ; Embankment in permafrost regions ; Embankment orientation ; Sunny slope and shady slope ; Solar radiation
学科分类: Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
英文摘要: Olivine and clinopyroxene grains have been separated from four large Fe-Ti-V oxide ore-bearing intrusions (Panzhihua, Hongge, Baima and Taihe) in the Panxi area, Emeishan large igneous province, Southwest China, for He and Ar isotope studies. The samples examined revealed extremely low (3)He/(4)He ratios (0.078-4.34 Ra with the mean value 0.78 Ra) for gases extracted by stepwise heating. This feature, combined with low (40)Ar/(36)Ar ratios can be interpreted as due to addition of subduction-related fluids and melts that had been stored in the lithospheric mantle for long periods. Considering the regional geologic history, such addition can be attributed to the paleo subduction that occurred along the western margin of the Yangtze Block during the Neoproterozoic. The subducted oceanic crust beneath the Panxi area underwent eclogite-facies metamorphism and subsequent exhumation. The infiltration of subduction-related melts and fluids into the lithospheric mantle led to enriched isotopic signatures from that of the slightly depleted asthenopheric mantle which has been suggested by the Sr, Nd and Pb isotopic data of the Emeishan basalts and picrites. In addition, considerable amounts of eclogitic melts produced by partial melting of eclogite-facies oceanic crust extensively contaminated the lithospheric mantle. During the late Permian, partial melting of an upwelling mantle plume that contained an eclogite or pyroxenite component generated the parental Fe-rich magma that supplied the ore-bearing intrusions. The combination of these factors may have been the crucial reason that many world-class Fe-Ti-V oxides deposits are clustered in the Panxi area. (C) 2011 Elsevier Ltd. All rights reserved.
收录类别: SCI
所属项目名称: Chinese Academy of Sciences [KZCX1-SW-04]; Ministry of Sciences and Technology of China [2002CB412704]; National Natural Science Foundation of China [90102006]
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.lig.ac.cn/handle/132962/2136
Appears in Collections:油气地球化学研究室_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
chou yaling,2009.PDF(942KB)----开放获取View 联系获取全文

Recommended Citation:
Chou Ya-ling; Sheng Yu; Wei Zhen-ming; Ma Wei.Calculation of temperature differences between the sunny slopes and the shady slopes along railways in permafrost regions on Qinghai-Tibet Plateau,COLD REGIONS SCIENCE AND TECHNOLOGY,2008,53(3):346-354
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Chou Ya-ling]'s Articles
[Sheng Yu]'s Articles
[Wei Zhen-ming]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Chou Ya-ling]‘s Articles
[Sheng Yu]‘s Articles
[Wei Zhen-ming]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: chou yaling,2009.PDF
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!