Rb-Sr Isotope ages and fluid inclusion characteristics of Pb-Zn deposit and their prospecting significance in Panshi-Panxin region, eastern Guizhou Province

XIE Xiaofeng; YANG Kunguang

2021 Vol. 40, No. 5

Article Contents

Article navigation > Geological Bulletin of China > 2021 > 40(5): 772-781

Next Article Previous Article

XIE Xiaofeng, YANG Kunguang. Rb-Sr Isotope ages and fluid inclusion characteristics of Pb-Zn deposit and their prospecting significance in Panshi-Panxin region, eastern Guizhou Province[J]. Geological Bulletin of China, 2021, 40(5): 772-781.

Citation:

XIE Xiaofeng, YANG Kunguang. Rb-Sr Isotope ages and fluid inclusion characteristics of Pb-Zn deposit and their prospecting significance in Panshi-Panxin region, eastern Guizhou Province[J]. Geological Bulletin of China, 2021, 40(5): 772-781.

Rb-Sr Isotope ages and fluid inclusion characteristics of Pb-Zn deposit and their prospecting significance in Panshi-Panxin region, eastern Guizhou Province

XIE Xiaofeng^1,2,3,,
YANG Kunguang¹

1.
Faculty of Earth Sciences, China University of Geoscience, Wuhan 430074, Hubei, China
2.
Geological Party 103, Guizhou Bureau of Geology & Mineral Exploration and Development, Tongren 554300, Guizhou, China
3.
Technology Innovation Center of Mineral Resources Explorations in Bedrock, Ministry of Natural Resources, Guiyang 550004, Guizhou, China

Received Date: 13 November 2019

Revised Date: 10 May 2020

Publish Date: 15 May 2021

Abstract

Abstract

The Pb-Zn deposit in Panshi-Panxin area, located on the Western margin of Xuefeng Mountain and the junction of Yangtze block and Jiangnan orogenic belt, is relatively a typical one in Songtao area, East Guizhou.The Rb-Sr isochronal dating on sphalerite of main metallogenic period yields an age of 486±3 Ma(MSWD=1.2) and (⁸⁷Sr/⁸⁶Sr)_i=0.70918±0.00002.The results of petrography, microthermometer and composition analysis on fluid inclusion in calcite show that the liquid-rich liquid-vapor-type fluid inclusions are the primary ones with a homogenization temperature of 277.23℃, and vapor phases are dominated by CO₂ and H₂O, with minor CH₄ present in individual fluid inclusion, and the ionic compositions are dominated by Na⁺, Ca²⁺, Mg²⁺, Cl^- and minor K⁺and SO₄^2-.The comprehensive studies show that the Pb-Zn deposit of this area was formed in the Late Cambrian to Early Ordovician, later than the country rock of Cambrian Second Series Qingxudong Formation, and indicate a genesis of epigenetic deposit.The(⁸⁷Sr/⁸⁶Sr)_i of sphalerite is higher than the wall rock, similar to the ⁸⁷Sr/⁸⁶Sr ratio of Early Cambrian seawater.Based on the analysis of the ore-bearing potential of the regional strata, it is speculated that the metallogenic material is derived from the Cambrian Niutitang Formation black shale series.The ore-forming fluid is of medium and low temperature hot brine origin and may be mixed with other hydrothermal sources.It is more likely that Pb and Zn migrated in the ore-forming fluid in the form of chloride.
- Rb-Sr isotope age /
- fluid inclusion /
- Pb-Zn deposits /
- Panshi-Panxin region /
- Guizhou Province

FullText(HTML)

References

[1]	吕承训, 高伟利, 张达, 等. 湖南花垣铅锌矿藻灰岩相层状角砾岩地质特征与矿化阶段划分[J]. 地质通报, 2020, 39(11): 1740-1751. Google Scholar
[2]	高伟利, 吕古贤, 薛长军, 等. 湘西花垣铅锌矿田成矿构造系统与成矿规律[J]. 地质通报, 2020, 39(11): 1759-1772. Google Scholar
[3]	谢小峰, 杨坤光, 潘文, 等. 贵州松桃东部盘石-盘信地区构造特征及其对铅锌矿的控制作用[J]. 化工矿产地质, 2018, 40(2): 65-70. doi: 10.3969/j.issn.1006-5296.2018.02.001 CrossRef Google Scholar
[4]	李宗发. 湘西黔东地区铅锌矿成因初步探讨[J]. 贵州地质, 1991, 29(4): 363-371. Google Scholar
[5]	王华云. 贵州铅锌矿的地球化学特征[J]. 贵州地质, 1993, 10(4): 272-290. Google Scholar
[6]	陈国勇, 安琪, 范玉梅. 黔东地区铅锌矿地质特征及成矿作用分析[J]. 贵州地质, 2005, 22(4): 252-259. doi: 10.3969/j.issn.1000-5943.2005.04.007 CrossRef Google Scholar
[7]	杨绍祥, 劳可通. 湘西北铅锌矿床的地质特征及找矿标志[J]. 地质通报, 2007, 26(7): 899-908. doi: 10.3969/j.issn.1671-2552.2007.07.015 CrossRef Google Scholar
[8]	周云, 段其发, 彭三国, 等. 湘西花垣地区铅锌成矿规律及矿床成因探讨[J]. 矿物学报, 2011, 31(S1): 234-235. Google Scholar
[9]	刘劲松, 邹先武, 汤朝阳, 等. 湘西黔东地区铅锌矿床与古油藏关系初探[J]. 华南地质与矿产, 2012, 28(3): 220-225. doi: 10.3969/j.issn.1007-3701.2012.03.005 CrossRef Google Scholar
[10]	李胜苗. 湘西北地区铅锌矿成矿规律与成矿预测研究[D]. 中国地质大学(北京)博士学位论文, 2016. Google Scholar
[11]	谢小峰, 潘文, 蒋天锐. 黔东松桃盘石-盘信地区铅锌矿成矿地质条件分析[J]. 地质论评, 2016, 62(S): 355-356. Google Scholar
[12]	赵爽, 潘文, 杨胜堂, 等. 湘西-黔东北地区下寒武统铅锌矿矿床地质特征及成因探讨[J]. 贵州地质, 2016, 33(4): 257-264. doi: 10.3969/j.issn.1000-5943.2016.04.004 CrossRef Google Scholar
[13]	李堃, 段其发, 赵少瑞, 等. 湖南花垣铅锌矿床成矿物质来源与成矿机制——来自S、Pb、Sr同位素的证据[J]. 地质通报, 2017, 36(5): 811-822. doi: 10.3969/j.issn.1671-2552.2017.05.013 CrossRef Google Scholar
[14]	戴传固, 陈建书, 卢定彪, 等. 黔东及邻区武陵运动及其地质意义[J]. 地质力学学报, 2010, 16(1): 78-84. doi: 10.3969/j.issn.1006-6616.2010.01.010 CrossRef Google Scholar
[15]	孙海清, 黄健中, 郭乐群, 等. 湖南冷家溪群划分及同位素年龄约束[J]. 华南地质与矿产, 2012, 28(1): 20-26. doi: 10.3969/j.issn.1007-3701.2012.01.003 CrossRef Google Scholar
[16]	孟庆秀, 张健, 耿建珍, 等. 湘中地区冷家溪群和板溪群锆石U-Pb年龄、Hf同位素特征及对华南新元古代构造演化的意义[J]. 中国地质, 2013, 40(1): 191-216. doi: 10.3969/j.issn.1000-3657.2013.01.014 CrossRef Google Scholar
[17]	秦松贤, 孟德保. 湘黔边境加里东板内造山期后正向滑脱构造与成矿[J]. 地质科技情报, 2004, 23(3): 11-15. doi: 10.3969/j.issn.1000-7849.2004.03.003 CrossRef Google Scholar
[18]	杜远生. 徐亚军. 华南加里东运动初探[J]. 地质科技情报, 2012, 31(5): 43-49. Google Scholar
[19]	杨坤光, 李学刚, 戴传固, 等. 断层调整与控制作用下的叠加构造变形: 以贵州地区燕山期构造为例[J]. 地质科技情报, 2012, 31(5): 50-56. Google Scholar
[20]	张国伟, 郭安林, 王岳军, 等. 中国华南大陆构造与问题[J]. 中国科学: 地球科学, 2013, 43(10): 1553-1582. Google Scholar
[21]	谢小峰, 杨坤光, 袁良军. 黔东地区"大塘坡式"锰矿研究现状及进展综述[J]. 贵州地质, 2015, 32(3): 171-176. doi: 10.3969/j.issn.1000-5943.2015.03.002 CrossRef Google Scholar
[22]	金宠. 雪峰陆内构造系统逆冲推滑体系[D]. 中国海洋大学博士学位论文, 2010. Google Scholar
[23]	李三忠, 王涛, 金宠, 等. 雪峰山基底隆升带及其邻区印支期陆内构造特征与成因[J]. 吉林大学学报(地球科学版), 2011, 41(1): 93-105. Google Scholar
[24]	段其发, 曹亮, 曾健康, 等. 湘西花垣矿集区狮子山铅锌矿闪锌矿Rb-Sr定年及地质意义[J]. 地球科学——中国地质大学学报, 2014, 39(8): 977-999. Google Scholar
[25]	杨红梅, 刘重芃, 段瑞春, 等. 贵州铜仁卜口场铅锌矿床Rb-Sr与Sm-Nd同位素年龄及其地质意义[J]. 大地构造与成矿学, 2015, 39(5): 855-865. Google Scholar
[26]	Ludwig K R. ISOPLOT 3.00: A Geochronological Toolkit for Microsoft Excel[J]. BerkeleyGeochronology Center, California, Berkeley, 2003: 1-39. Google Scholar
[27]	张德会. 矿物包裹体液相成分特征及其矿床成因意义[J]. 地球科学——中国地质大学学报, 1992, 17(6): 677-688. Google Scholar
[28]	李成禄. 山西省繁峙县义兴寨石英脉型金矿成因矿物学研究与深部预测[D]. 中国地质大学(北京)博士学位论文, 2009. Google Scholar
[29]	周云, 段其发, 唐菊兴, 等. 湘西地区铅锌矿的大范围低温流体成矿作用——流体包裹体研究[J]. 地质与勘探, 2014, 50(3): 515-532. Google Scholar
[30]	侯明兰, 蒋少涌, 姜耀辉, 等. 胶东蓬莱金成矿区的S-Pb同位素地球化学和Rb-Sr同位素年代学研究[J]. 岩石学报, 2006, 22(10): 2525-2533. Google Scholar
[31]	周云, 段其发, 陈毓川, 等. 湘西花垣铅锌矿田成矿物质来源的C、O、H、S、Pb、Sr同位素制约[J]. 地质学报, 2016, 90(10): 2786-2802. doi: 10.3969/j.issn.0001-5717.2016.10.017 CrossRef Google Scholar
[32]	汤朝阳, 邓峰, 李堃, 等. 湘西-黔东地区早寒武世沉积序列及铅锌成矿制约[J]. 大地构造与成矿学, 2012, 36(1): 111-117. doi: 10.3969/j.issn.1001-1552.2012.01.014 CrossRef Google Scholar
[33]	雷义均, 戴平云, 段其发, 等. 鄂西-湘西北地区铅锌矿矿源层对铅锌矿层产出定位的制约[J]. 桂林理工大学学报, 2013, 33(1): 1-6. doi: 10.3969/j.issn.1674-9057.2013.01.001 CrossRef Google Scholar
[34]	黄思静, 石和, 毛晓东, 等. 重庆秀山寒武系锶同位素演化曲线及全球对比[J]. 地质论评, 2002, 48(5): 509-516. doi: 10.3321/j.issn:0371-5736.2002.05.009 CrossRef Google Scholar