Discussion on the crustal density structure and deep mineralization background in the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from the gravity inversion
文献类型：期刊论文
| 作者 | Zhang YongQian1; Lu QingTian1; Teng JiWen2; Wang QianShen2; Xu Tao2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2014-04-01 |
| 卷号 | 30期号:4页码:931-940 |
| 关键词 | The Middle-Lower Yangtze metallogenic belt Ning-wu ore concentration area Gravity field Density structure Deep mineralization background |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | To further understand the deep tectonic background and the magma activities as well as the deep mineralization processes in the Middle-Lower Yangtze metallogenic belt, we construct the 2D crustal density structure model based on the gravity data collected along the Lixin-Yixing geophysical profile in direction of NW-SE. We discuss the deep tectonic framework and mineralization processes on the view points of Moho undulation, characteristics of densities distribution and exist of low-density zones in crust based on the density model we got. The research results show that: the density structure varies strongly beneath the Lixin-Yixing profile; the Moho interface shallows by 3km beneath the Ningwu ore concentration area and shows an uplift form; there exists low-density zone beneath Ningwu ore concentration area. The underplating of magma from upper mantle and MASH ( melting, assimilation, storage and homogenisation) process can provide reasonable explanation for such structure and tectonic framework and the existence of magma and minerals on ground surface. Upwelling of the materials from the lithospheric mantle results not only in the uplift of the Moho interface, but also in the formation of low density zone beneath the Ningwu ore concentration area. Meanwhile, the extensional faults in the brittle upper crust have provided theoretical environment for the upward movement of magmas and the formation of mineral resources. |
| WOS关键词 | SOURCE SEISMIC EXPERIMENT ; TONGLING ORE DISTRICT ; LOWER REACHES ; EASTERN CHINA ; INTRUSIVE ROCKS ; CONTINENTAL-CRUST ; STRUCTURE BENEATH ; VOLCANIC-BASIN ; NINGZHEN AREA ; RIVER |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000335541600004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84965]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang YongQian |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR, Key Lab Metallogency & Mineral Assessment, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang YongQian,Lu QingTian,Teng JiWen,et al. Discussion on the crustal density structure and deep mineralization background in the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from the gravity inversion[J]. ACTA PETROLOGICA SINICA,2014,30(4):931-940. |
| APA | Zhang YongQian,Lu QingTian,Teng JiWen,Wang QianShen,&Xu Tao.(2014).Discussion on the crustal density structure and deep mineralization background in the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from the gravity inversion.ACTA PETROLOGICA SINICA,30(4),931-940. |
| MLA | Zhang YongQian,et al."Discussion on the crustal density structure and deep mineralization background in the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from the gravity inversion".ACTA PETROLOGICA SINICA 30.4(2014):931-940. |
入库方式： OAI收割
来源：地质与地球物理研究所
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