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| 大兴安岭中南段中生代成矿物质的深部来源与背景 | |
| 引用本文： | 邵济安,牟保磊,朱慧忠,张履桥.大兴安岭中南段中生代成矿物质的深部来源与背景[J].岩石学报,2010,26(3):649-656. |
| 作者姓名： | 邵济安 牟保磊 朱慧忠 张履桥 |
| 作者单位： | 1. 造山带与地壳演化教育部重点实验室,北京大学地球与空间科学学院,北京100871 2. 内蒙古第十地质矿产勘查开发院,赤峰,024005 3. 内蒙古地质局地质研究所,呼和浩特,010020 |
| 基金项目： | 国家自然科学基金项目(90714008)和中国科学院矿产资源研究所重点实验室项目联合资助 |
| 摘 要： | 大兴安岭是我国北方一个重要的多金属成矿带。本文从成矿的物质来源和构造作用两方面讨论大兴安岭的成矿系统。Sr、Nd、O、Pb同位素的研究显示大兴安岭成矿物质的深部来源,大兴安岭晚中生代壳幔混熔花岗质岩石组成及其构造环境的研究,表明它们是在板内非造山的伸展环境下形成的A型花岗岩。与南岭花岗岩及其成矿作用的对比研究,将加深对大兴安岭中生代成矿特征的认识。深部构造特征也进一步印证了大兴安岭的成岩-成矿的背景。 |
| 关 键 词： | 大兴安岭 中生代 成矿物质的来源 壳幔混熔花岗岩 |
| 收稿时间： | 2009/11/16 0:00:00 |
| 修稿时间： | 2010/1/17 0:00:00 |
Material source and tectonic settings of the Mesozoic mineralization of the Da Hinggan Mts |
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| Shao JA,Mu BL,Zhu HZ and Zhang LQ.Material source and tectonic settings of the Mesozoic mineralization of the Da Hinggan Mts[J].Acta Petrologica Sinica,2010,26(3):649-656. | |
| Authors: | Shao JA Mu BL Zhu HZ and Zhang LQ |
| Institution: | The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education; School of Earth and Space Sciences, Peking University, Beijing 100871, China;The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education; School of Earth and Space Sciences, Peking University, Beijing 100871, China;Inner-Mongolia 10th Institute of Geology and Mineral Resources, Chifeng 024005, China;Institute of Geology, Inner-Mongolia Bureau of Geology, Hohhot 010020, China |
| Abstract: | The Da Higgan Mts. is an impotent polymetallic mineralized zone in the north part of China. This paper discusses the metallogenetic system of the Da Higgan Mts. according to the source of its metallogenic materials and its tectonic settings. Sr-Nd-O-Pb isotopic researches show a deep source of the metallogenic materials in the Da Higgan Mts., and studies on composition of the Late Mesozoic crust-mantle migmatitic granitic rocks in the Da Higgan Mts. and their structural environment indicate that they are A-type granitic rocks formed in an intraplate and non-orogenic extensional environment. Understanding of the Mesozoic metallgenetic characteristics of the Da Higgan Mts. is deepened through comparison with Nanling granitic rocks and its mineralization. The deep structures of the Da Higgan Mts. further reveal its tectonic background of lithogenesis and mineralization. |
| Keywords: | Da Higgan Mts Mesozoic Source of metallogenic material Intermingling granit of crust-and mante-melts |
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