Deformation characteristics of the Tongshan fault within Tongshan porphyry copper deposit, Heilongjiang Province, and restoration of alteration zones and orebodies
文献类型：期刊论文
| 作者 | Pang XuYong1,2; Qin KeZhang1,2; Wang Le1,2; Song GuoXue1; Li GuangMing1; Su ShiQiang1,2; Zhao Chao1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2017 |
| 卷号 | 33期号:2页码:398-414 |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Tongshan copper deposit is situated in the Duobaoshan copper ore field, Heilongjiang Province. It and Duobaoshan porphyry copper deposit are the oldest (Ordovician) porphyry copper deposits within the eastern part of the Central Asian Orogenic Belt. The Tongshan fault, the most important post-mineralization fault in the Tongshan copper deposit, cuts orebodies and alteration zones, which leads to mineralized center unknown and direction for further prospecting unclear. Its current kinematic characteristics is still under controversial, moreover, detailed reporting involving deformation feature descriptions is lacking. This paper carried out both detailed indoor and outdoor studies, and several understandings were accomplished:1) The Tongshan fault, with a nearly EW strike, belongs to a compression-shear fault. Its most typical geometric feature is the development of NEE-strike cleavages, structural lenses and twisted dykes and hydrothermal veins. 2) Microscopic deformation features of quartz, pyrite, chalcopyrite and sphalerite, together with quartz fabric features analyzed by EBSD, indicate low temperature deformation condition. The Tongshan fault is considered to be brittle fault as a whole by the deformation characteristics of minerals and rocks. 3) Structural analysis indicates that relative to the footwall, the hanging wall slipped through SE to NW. The fault displacement is estimated by matching geological boundaries within the hanging wall and footwall and studying the distribution regularity of alteration zones and hydrothermal veins of the Tongshan area. The hanging wall was horizontally offset with a distance of 700 similar to 800m along direction of around NW320 degrees, and was lifted 550 similar to 700m vertically. As a result, outer alteration zones and mineralized zones were cut off. 4) A secondary fault of the Tongshan fault cuts through the Late-Middle Triassic muscovite granite, so the activity time of the Tongshan fault was later than the Late-Middle Triassic. 5) The distribution of alteration zones and orebodies of the Tongshan porphyry deposit is restorated by displacement recovery of the Tongshan fault, which shows that the Tongshan deposit was in spindle morphology before the Tongshan fault activated. It can be inferred from the distribution regularity of mineralization and alteration, that the porphyry, related to mineralization, and undiscovered orebodies may exist in the south of orebody ? in the footwall of the Tongshan fault. |
| WOS关键词 | AMPHIBOLITE FACIES METAMORPHISM ; MASSIVE SULFIDE DEPOSITS ; NE-CHINA ; VMS DEPOSIT ; ORE ; REMOBILIZATION ; PYRITE ; EVOLUTION ; GOLD ; GEOCHRONOLOGY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000397326900007 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53068]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Qin KeZhang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resource, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pang XuYong,Qin KeZhang,Wang Le,et al. Deformation characteristics of the Tongshan fault within Tongshan porphyry copper deposit, Heilongjiang Province, and restoration of alteration zones and orebodies[J]. ACTA PETROLOGICA SINICA,2017,33(2):398-414. |
| APA | Pang XuYong.,Qin KeZhang.,Wang Le.,Song GuoXue.,Li GuangMing.,...&Zhao Chao.(2017).Deformation characteristics of the Tongshan fault within Tongshan porphyry copper deposit, Heilongjiang Province, and restoration of alteration zones and orebodies.ACTA PETROLOGICA SINICA,33(2),398-414. |
| MLA | Pang XuYong,et al."Deformation characteristics of the Tongshan fault within Tongshan porphyry copper deposit, Heilongjiang Province, and restoration of alteration zones and orebodies".ACTA PETROLOGICA SINICA 33.2(2017):398-414. |
入库方式： OAI收割
来源：地质与地球物理研究所
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