GYIG OpenIR  > 矿床地球化学国家重点实验室
Submarine hydrothermal contribution for the extreme element accumulation during the early Cambrian, South China
Tao Han;  Haifeng Fan;  Xiaoqing Zhu;  Hanjie Wen;  Chenghai Zhao;  Fang Xiao
2017
Source PublicationOre Geology Reviews
Volume86Pages:297-308
Abstract

Throughout the geological history of the Earth, submarine hydrothermal activity has played an important role in seawater chemistry, biological evolution and enrichment of metals in the Earth crust. However, the prospect of hydrothermal activity for extreme element accumulation during the early Cambrian, a key geological period, in South China has not been well-constrained. This study reports geochemical (e.g. REE and Sr isotope) investigations of a coarse-grained limestone layer and associated calcite veins in Zunyi and Nayong areas, Guizhou Province, to constrain the hydrothermal activity and evaluate the significance of hydrothermal contribution to extreme element accumulation during the early Cambrian, South China. Our results reveal positive Eu anomalies and higher initial Sr-87/Sr-86 ratios (0.7083-0.7150) for carbonate samples than those of early Cambrian seawater, indicating the presence of hydrothermal processes. Combined with constraints from the spatial relationships and coincidence with adjacent mineralization, these hydrothermal processes provide the most probable contribution for polymetallic Ni-Mo-PGE mineralization. Furthermore, there are abundant hydrothermal dolomite and barite-calcite veins in the dolostone of the Dengying Formation, indicating the occurrence of a variety of hydrothermal fluids. Overall, multi-stage hydrothermal pulses with different fluid compositions spanned the Ediacaran-Cambrian transition in South China. In particular, these hydrothermal fluids with positive Eu anomalies and enriched radiogenic Sr, originating from Proterozoic mafic/ultramafic rocks, may have flowed through the underlying Precambrian silicate clastic rocks (e.g., Xiajiang, Banxi and Lengjiaxi Groups) and may have been crucial for the marine environment, biological diversity and extreme element accumulation during the early Cambrian, South China.

KeywordHydrothermal Activity coarse-grained Limestone early Cambrian south China sr Isotope ree
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8094
Collection矿床地球化学国家重点实验室
AffiliationState Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
Recommended Citation
GB/T 7714
Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao. Submarine hydrothermal contribution for the extreme element accumulation during the early Cambrian, South China[J]. Ore Geology Reviews,2017,86:297-308.
APA Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao.(2017).Submarine hydrothermal contribution for the extreme element accumulation during the early Cambrian, South China.Ore Geology Reviews,86,297-308.
MLA Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao."Submarine hydrothermal contribution for the extreme element accumulation during the early Cambrian, South China".Ore Geology Reviews 86(2017):297-308.
Files in This Item:
File Name/Size DocType Version Access License
Submarine hydrotherm(4484KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tao Han;Haifeng Fan;Xiaoqing Zhu;Hanjie Wen;Chenghai Zhao;Fang Xiao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Submarine hydrothermal contribution for the extreme element accumulation during the early Cambrian, South China.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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