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| Element Geochemical Division of the Middle Segment of the Sanjiang（Three—River） Region | |
| 引用本文： | 沈上越,魏启荣,等.Element Geochemical Division of the Middle Segment of the Sanjiang（Three—River） Region[J].中国地球化学学报,2001,20(4):302-314. |
| 作者姓名： | 沈上越 魏启荣 |
| 作者单位： | [1]ChineseUniversityofGeology,Wuhan430074,China [2]GuangzhouInstituteofGeochemistry,ChineseAcademyofScience |
| 摘 要： | This paper describes the aim and principle of element geochemical division,the source of samples and data processing,the choice of divisional indices and the division of index value ranges.According to the geological structures and characteristic values(the accumulated value of enrichment coefficient)of the mantle-type elements(KT)this region can be divided into seven geochemical zones,i.e.,the Yangtze basement,the Yangtze cover,the Jinshajiang paleo-Tethys,the Lancangjiang paleo-Tethys,the Lanping Mesozoic basin,the Indosinian granite,and the Himalayan granite.Again in accordance with the different characteristic values of high field strength elements(HFSE)(KNb) or radiogenic elements(KTh)16 geochemical sub-zones can be divided.Meanwhile,this paper discusses the rules of variation in characteristic value of the various sub-zones and points out the characteristics of enrichment of oreforming elements in some of the sub-zones. |
| 关 键 词： | 三江地区 元素地球化学 地层 火山岩 |
| 收稿时间： | 6 March 2007 |
Element geochemical division of the middle segment of the Sanjiang (Three-River) region |
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| Shangyue Shen,Qirong Wei,Xuanxue Mo,Xuehui Yu,Pusheng Zeng,Changshou Hu.Element geochemical division of the middle segment of the Sanjiang (Three-River) region[J].Chinese Journal of Geochemistry,2001,20(4):302-314. | |
| Authors: | Shangyue Shen Qirong Wei Xuanxue Mo Xuehui Yu Pusheng Zeng Changshou Hu |
| Institution: | 1. Chinese University of Geology, 430074, Wuhan, China 2. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China 3. Yunnan Bureau of Geology and Exploration, 650011, Kunming, China |
| Abstract: | This paper describes the aim and principle of element geochemical division, the source of samples and data processing, the choice of divisional indices and the division of index value ranges. According to the geological structures and characteristic values (the accumulated value of enrichment coefficient) of the mantle-type elements (K T) this region can be divided into seven geochemical zones, i.e., the Yangtze basement, the Yangtze cover, the Jinshajiang paleo-Tethys, the Lancangjiang paleo-Tethys, the Lanping Mesozoic basin, the Indosinian granite, and the Himalayan granite. Again in accordance with the different characteristic values of high field strength elements (HFSE) (K Nb) or radiogenic elements (K Th) 16 geochemical sub-zones can be divided. Meanwhile, this paper also discusses the rules of variation in characteristic value of the various sub-zones and points out the characteristics of enrichment of oreforming elements in some of the sub-zones. |
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