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中国新生代成矿作用的惰性气体同位素研究与动力学背景
引用本文:王登红,余金杰,杨建民,闫升好,薛春纪,陈毓川.中国新生代成矿作用的惰性气体同位素研究与动力学背景[J].矿床地质,2002,21(2):179-186.
作者姓名:王登红  余金杰  杨建民  闫升好  薛春纪  陈毓川
作者单位:1. 中国地质科学院矿产资源研究所,北京,10037
2. 长安大学,陕西,西安,710054
3. 中国地质科学院,北京,100037
基金项目:国家 973项目 (G19990 432 0 3课题 ),地质大调查项目 (K1.4_3_4专题 ),国家计委专项资助
摘    要:通过对中国不同类型的,与新生代成矿作用有关的地质样品的惰性气体同位素组成研究,揭示出在不同地质新生代地幔流体广泛地参与了不同类型的成矿作用的规律。壳幔相互作用在宏观上控制了成矿作用的发生,但在早第三纪和晚第三纪刚开始时,地幔脱气作用表现得更为显著。25Ma可能是一个重要的转折点,虽然不同部位或地段中记录的惰性气体同位素组成有时相对均一,有时变化很大,但无疑深大断裂带是幔源气体逸出的重要通道,也是控制新生代成矿作用的重要构造部位。

关 键 词:中国  成矿作用  新生代  地幔脱气  惰性气体同位素  成矿动力学  25Ma
文章编号:0258-7106(2002)02-0179-08

Inert Gas Isotopic Studies and Dynamic Background of Cenozoic Ore-forming Process in China
Wang Denghong ,Yu Jinjie ,Yang Jianmin ,Yan Shenghao ,Xue Chunji ,Chen Yuchuan.Inert Gas Isotopic Studies and Dynamic Background of Cenozoic Ore-forming Process in China[J].Mineral Deposits,2002,21(2):179-186.
Authors:Wang Denghong  Yu Jinjie  Yang Jianmin  Yan Shenghao  Xue Chunji  Chen Yuchuan
Institution:Wang Denghong 1,Yu Jinjie 1,Yang Jianmin 1,Yan Shenghao 1,Xue Chunji 2,Chen Yuchuan 3
Abstract:Based on studies of isotopic composition of inert gases in geological samples related to different types of Cenozoic ore_forming processes in China, the authors have revealed that Cenozoic mantle fluids must have extensively taken part in different types of ore_forming processes. The interaction between the crust and the mantle controlled the ore_forming process on the whole; nevertheless, at the beginning of Paleogene and that of Neogene, the gas_releasing action of the mantle was especially remarkable, and 25 Ma seems to have been an important turning point. Although isotopic compositions of inert gases recorded in different positions and different sections could either be relatively uniform or vary considerably, the great deep fault belt was undoubtedly an important channelway for the release of gases and also served as an important tectonic position controlling the Cenozoic ore_forming process.
Keywords:Cenozoic  gas_releasing action of the mantle  inert gas isotopes  metallogenic mechanics  25 Ma
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