IGGCAS OpenIR  > 矿产资源研究院重点实验室
Geochronology and geochemistry of Early Silurian felsic volcanic rocks in the Dabaoshan ore district, South China: Implications for the petrogenesis and geodynamic setting
Su, Shiqiang1,3,4; Qin, Kezhang1,2,3; Li, Guangming1,2; Pang, Xuyong1,3; Zou, Xinyu1,3; Zhao, Chao1,3
2019-11-01
Source PublicationGEOLOGICAL JOURNAL
ISSN0072-1050
Volume54Issue:6Pages:3286-3303
AbstractThe Early Paleozoic orogeny in South China has remained controversial in the long run with debate over intracontinental orogeny versus plate subduction. Limited studies have focused on the Early Paleozoic volcanic rocks in South China, which is crucial for us to understand the tectonic evolution of the South China Block. The Dabaoshan Fe-Cu-Pb-Zn-Mo-W orefield, one of the largest polymetallic deposits in South China, is hosted by Paleozoic volcanic-sedimentary rocks and Mesozoic granitic porphyry. In this study, zircon U-Pb dating yielded ages of 439.4 +/- 2.7 Ma, 439.3 +/- 3.2 Ma, and 442.0 +/- 2.2 Ma for the Dabaoshan dacite. These ages are all in good agreement within errors and indicate that the dacite formed during the early Silurian (ca. 440 Ma). The dacites are slightly peraluminous, calc-alkaline with relatively high K2O + Na2O, FeOt, TiO2, CaO/Na2O ratios, and small negative Eu anomalies. They show enrichment in LILEs and LREE and depletion in Ba, Nb, Sr, P, and Ti. It has high initial Sr-87/Sr-86 values (0.70983-0.71140) and negative epsilon(Nd)(t) values ranging from -7.6 to -10 with T-2DM ages of 1.80-1.99 Ga, epsilon(Hf)(t) values from -4.95 to -15.48 with T-2DM ages of 1.72 Ga to 2.38 Ga. The overlapped Nd-Hf two-stage model ages range from 1.89 Ga to 1.99 Ga, which indicates that the Dabaoshan dacite originated from a Paleoproterozoic source. Combining these geochemical and in situ zircon Hf isotopic data, we propose that the Dabaoshan dacite may have originated from the partial melting of mixed source of Paleoproterozoic metasedimentary and metaigneous rocks as a result of underplating of mafic magma during the post-orogenic collapse and extension followed by lithospheric thining and asthenospheric mantle upwelling in an intraplate setting. Based on field observation and the geochronology results, we propose that the stratiform Cu-Pb-Zn mineralization may be related with the early Silurian volcanic rocks.
KeywordEarly Paleozoic volcanic rocks Sr-Nd-Hf Stratiform Cu-Pb-Zn mineralization The Dabaoshan polymetallic deposit Zircon U-Pb geochronology
DOI10.1002/gj.3328
Funding OrganizationSociety of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China
WOS KeywordLA-ICP-MS ; NORTHERN GUANGDONG PROVINCE ; PB ZIRCON GEOCHRONOLOGY ; ND ISOTOPIC COMPOSITION ; EARLY PALEOZOIC OROGEN ; PORPHYRY MO DEPOSIT ; IN-SITU ANALYSIS ; S-TYPE GRANITES ; U-PB ; CATHAYSIA BLOCK
Language英语
Funding ProjectSociety of Economic Geologist Foundation ; Geological Survey of China[12120115035401]
Funding OrganizationSociety of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Society of Economic Geologist Foundation ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China ; Geological Survey of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000496020400007
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95704
Collection矿产资源研究院重点实验室
Corresponding AuthorQin, Kezhang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Tasmania, ARC Ctr Excellent Ore Deposits Codes, Sch Phys Sci, Hobart, Tas 7001, Australia
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Su, Shiqiang,Qin, Kezhang,Li, Guangming,et al. Geochronology and geochemistry of Early Silurian felsic volcanic rocks in the Dabaoshan ore district, South China: Implications for the petrogenesis and geodynamic setting[J]. GEOLOGICAL JOURNAL,2019,54(6):3286-3303.
APA Su, Shiqiang,Qin, Kezhang,Li, Guangming,Pang, Xuyong,Zou, Xinyu,&Zhao, Chao.(2019).Geochronology and geochemistry of Early Silurian felsic volcanic rocks in the Dabaoshan ore district, South China: Implications for the petrogenesis and geodynamic setting.GEOLOGICAL JOURNAL,54(6),3286-3303.
MLA Su, Shiqiang,et al."Geochronology and geochemistry of Early Silurian felsic volcanic rocks in the Dabaoshan ore district, South China: Implications for the petrogenesis and geodynamic setting".GEOLOGICAL JOURNAL 54.6(2019):3286-3303.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Su, Shiqiang]'s Articles
[Qin, Kezhang]'s Articles
[Li, Guangming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Su, Shiqiang]'s Articles
[Qin, Kezhang]'s Articles
[Li, Guangming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Su, Shiqiang]'s Articles
[Qin, Kezhang]'s Articles
[Li, Guangming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.