| 三江地区中段岩石地球化学分区研究 |
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| 引用本文： | 沈上越,魏启荣,莫宣学,喻学惠,曾普胜,胡长寿.三江地区中段岩石地球化学分区研究[J].矿物岩石,2003,23(2):37-43. |
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| 作者姓名： | 沈上越 魏启荣 莫宣学 喻学惠 曾普胜 胡长寿 |
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| 作者单位： | 1. 中国地质大学,湖北,武汉,430074
2. 云南地勘局,云南,昆明,650011 |
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| 基金项目： | “九五”国家科技攻关计划 ( 96-914-01-03 )项目，地质矿产部资源与环境科技攻关 (95-02-001-02)项目，国家自然科学基金 (批准号 :49772122)项目，211工程地球物质科学与材料学科群建设项目 |
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| 摘 要： | 根据特定的地质构造及幔型元素(KT)特征值(富集系数累加值)的不同，将三江地区中段划分为7个地球化学区，即扬子基底、扬子盖层、金沙江古特提斯、澜沧江古特提斯、兰坪中新生盆地、印支花岗岩、喜山花岗岩地球化学区；再根据各地球化学区中高强场元素(KNb)或放射性元素(KTh)特征值的不同划分为16个子区(或亚区)。进而论述各地球化学子区(或亚区)特征值的变化规律；并寻找成矿元素在某些子区的富集特点。
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| 关 键 词： | 三江地区 岩石地球化学 地质构造 火山岩 花岗岩 地层 放射性元素 变化规律 成矿元素 富集特点 |
| 文章编号： | 1001-6872(2003)02-0037-07 |
| 修稿时间： | 2002年11月26 |
STUDY ON ROCK GEOCHEMICAL DIVISION IN THE MIDDLE PART OF JINSHAJIANG RIVER-LAN CHANGJIANG RIVER-NUJIANG RIVER AREA IN CHINA |
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| SHEN Shang-yue ,WEI Qi-rong ,MO Xuan-xue ,YU Xue-hui ,ZEN Pu-shen ,HU Chang-shou .China University of Geosciences,Wuhan ,China, .Yunnan Bureau of Geology and mineral Resources,Kunming ,China.STUDY ON ROCK GEOCHEMICAL DIVISION IN THE MIDDLE PART OF JINSHAJIANG RIVER-LAN CHANGJIANG RIVER-NUJIANG RIVER AREA IN CHINA[J].Journal of Mineralogy and Petrology,2003,23(2):37-43. |
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| Authors: | SHEN Shang-yue WEI Qi-rong MO Xuan-xue YU Xue-hui ZEN Pu-shen HU Chang-shou China University of Geosciences Wuhan China Yunnan Bureau of Geology and mineral Resources Kunming China |
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| Institution: | SHEN Shang-yue 1,WEI Qi-rong 1,MO Xuan-xue 1,YU Xue-hui 1,ZEN Pu-shen 2,HU Chang-shou 2 1.China University of Geosciences,Wuhan 430074,China, 2.Yunnan Bureau of Geology and mineral Resources,Kunming 650011,China |
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| Abstract: | In this paper the purpose and principle of geochemical division, sample distribution, data processing, indexes of geochemical division selection and index segment are discussed. According to difference of specific tectonics and characteristic values of mantle-type elements (K T), the middle part of Jinshajiang River-Lanchangjiang River-Nujiang River Area in China is divided into seven geochemical regions:the Yangzi old basement, Yangzi cover sequence,Jinshajiang Paleo-Tethys, Lancanjiang Paleo-Tethys, Lanping basin Mesozoic to Cenozoic,geochemical region of Indosinian granites and Himalayan granites. According to characteristic values of high field strength elements (K Nb) or radiogenic elements, the study area is subdivided into sixteen regions. In addition, changing law of characteristic values from each geochemical sub-region is discussed and enrichment characteristics of ore-forming elements in some geochemical regions is proposed. |
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| Keywords: | middle part of Sanjiang area strata-volcanic rocks granite geochemical division |
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