Sr-Nd and zircon Hf isotopic constraints on petrogenesis of the Early Cretaceous diorite in the Jinjingzui gold deposit, southeast Hubei Province
-
摘要:
研究目的 金井咀金矿床早白垩世闪长岩的岩石成因及岩浆起源对于讨论成岩成矿关系、完善区域成矿规律等问题具有重要意义。
研究方法 本文对矿区赋矿闪长岩开展了全岩Sr-Nd和锆石Hf同位素分析。
研究结果 金井咀闪长岩具有相对较高的87Sr/86Sr初始比值（0.7059~0.7062），负的εNd（t）值（-7.93~-7.58）和锆石εHf（t）值（-12.2~-6.5），表明岩浆形成于富集地幔的部分熔融，后经历了演化分异，在岩浆演化过程中可能存在一定程度的陆壳混染。
结论 通过与区域上已经发现的矿床对比发现，金井咀矽卡岩型金矿床与鄂东南矿集区矽卡岩型金矿床具有相同的成岩成矿时代和类似的岩石成因及岩浆源区，但是金井咀矿床金矿体主要赋存在闪长岩体内部，这与其他矿床主要赋存在碳酸盐岩地层或岩体内外接触带明显不同。金井咀矿床的发现，对于完善区域成矿规律，指导金矿找矿勘查具有重要的意义。
Abstract:This paper is the result of geological survey engineering.
Objective The petrogenesis and magmatic origin of the early Cretaceous diorite in Jinjingzui gold deposit are of great significance for the diagenetic and metallogenic relations and perfecting the regional metallogenic regularity.
Methods In this study we report the Sr-Nd and zircon Hf isotopic compositions of diorite in Jinjingzui deposit.
Results The results show that the diorite has relative high initial 87Sr/86Sr ratio (0.7059-0.7062), negative εNd(t) values (-7.93--7.58) and εHf(t) values (-12.2--6.5), suggesting the magma was derived from partial melting of an enrichment mantle, followed by magma differentiation. There may be continental crust contamination during magmatic evolution.
Conclusions By comparison with reported deposit in cluster, Jinjingzui Au deposit is similar to these Au deposit at Edong cluster in rock- and ore-forming ages, petrogenesis and magma source. However, the gold orebody of Jinjingzui Au deposit mainly lay within the diorite body, which is obviously different from other deposits that lay internal or external contact zone of rocks. The discovery of Jinjingzui deposit is of great significance for perfecting regional metallogenic regularity and gold prospecting and exploration.
-
-
图 1 长江中下游成矿带地质矿产简图（据常印佛等，1991; Xie et al., 2011b）
Figure 1.
图 8 金井咀闪长岩(87Sr/86Sr)i-εNd(t)图（据Xie et al., 2011a）
Figure 8.
图 9 锆石Hf同位素特征图（底图引自Vervoort et al., 1996）
Figure 9.
表 1 金井咀闪长岩锆石U-Pb同位素组成
Table 1. Zircon U-Pb isotopic compositions of zircons in Jinjingzui diorite
下载: 导出CSV
-
Amelin Y, Lee D C, Halliday A N, Pidgeon R T. 1999. Nature of the Earth's earliest crust from hafnium isotopes in single detrital zircons[J]. Nature, 399: 252-255. doi: 10.1038/20426
Chang Yinfo, Liu Xiangpei, Wu Yanchang. 1991. The Copper Iron Belt of the Lower and Middle Reaches of the Changjiang River[M]. Beijing: Geological Publishing House, 1-379 (in Chinese).
Chen Fuwen, Mei Yuping, Li Huaqin. 2011. SHRIMP U-Pb zircon dating for granodiorite porphyry of the Fengshan orefield in eastern Hubei Province and its geological significance[J]. Acta Geologica Sinica, 85(1): 88-96(in Chinese with English abstract).
Chen Wen, Ruan Qilin, Yang Weiwei, Li Jun, Ke Yufu, Fan Zhonglin, Zhai Si. 2012. Geological characteristics and genesis of Skarn type gold deposit in Jinjingzui, East Hubei Province[J]. China Mining Magazine, 21(4): 56-59 (in Chinese with English abstract).
Ding Lixue, Huang Guicheng, Xia Jinlong. 2018. Age and petrogenesis of the Echeng intrusion in southeastern Hubei Province: Implications for iron mineralization[J]. Earth Science, 43(7): 2350-2369 (in Chinese with English abstract).
Elhlou S, Belousova E, Griffin W L, Pearson W L, O'Reilly S Y. 2006. Trace element and isotopic composition of GJ red zircon standard by laser ablation[J]. Geochimica et Cosmochim Acta, 70(18): A158.
Falloon T J, Green D H, O'Neill, H S C, Hibberson W O. 1997. Experimental tests of low degree peridotite partial melt compositions: Implications for the nature of anhydrous near-solidus peridotite melts at 1 GPa[J]. Earth and Planetary Science Letters, 152 (1/4) : 149-162.
Gong Xuejing, Zeng Jianhui, Cao Dianhua. 2019. Sr-Nd and zircon Hf-O isotopic constraints on the petrogenesis of the orebearing granitic porphyry at Lengshuikeng, Jiangxi Province[J]. Geology in China, 46(4): 818-831 (in Chinese with English abstract).
Hamelin C, Dosso L, Hanan B, Barrat J A. 2010. Sr-Nd-Hf isotopes along the Pacific Antarctic Ridge from 41 to 53°S[J]. Geophysical Research Letters, 37(10): 1-5.
Ji Min, Zhao Xinfu, Zeng Liping, Fan Tianweiteng. 2018. Microtexture and geochemistry of garnets from Tonglushan skarn Cu-Fe deposit in the southeastern Hubei metallogenic province Implications for ore forming process[J]. Acta Petrologica Sinica, 34(9) : 2716-2732 (in Chinese with English abstract).
Li Jianwei, Deng Xiaodong, Zhou Meifu, Liu Yongsheng, Zhao Xinfu, Guo Jingliang. 2010. Laser ablation ICP-MS titanite U-Th-Pb dating of hydrothermal ore deposits: A case study of the Tonglushan Cu-Fe-Au skarn deposit, SE Hubei Province, China[J]. Chemical Geology, 270: 56-67. doi: 10.1016/j.chemgeo.2009.11.005
Li Jianwei, Zhao Xinfu, Zhou Meifu, Vasconcelos P, Ma Changqian, Deng Xiaodong, Sérgio de Souza, Zhao Yongxin, Wu Gang. 2008. Origin of the Tongshankou porphyry-skarn Cu-Mo deposit, eastern Yangtze craton, Eastern China: Geochronological, geochemical, and Sr-Nd-Hf isotopic constraints[J]. Mineralium Deposita, 43: 319-336.
Li Xinhao, Xie Guiqing, Li Wei, Zheng Xianwei, Liu Mao. 2018. Geological characteristics, U-Pb age and Hf isotope of zircon in hosting intrusion for Baotuanshan Au-Cu deposit, Edong ore cluster and its geological significance[J]. Geological Bulletin of China, 37(7) : 1346-1359 (in Chinese with English abstract).
Li Xinhao, Xie Guiqing. 2018. Discussion on metallogenic mechanism of Jinjingzui porphyry gold deposit in Hubei Province [C]// Chinese Geophysical Society (ed. ). Proceedings of the China Geosciences Joint Academic Annual Conference (40). Beijing : China Heping Audio-visual and Electronic Publishing House, 1-3(in Chinese).
Ling Mingxing, Wang Fangyue, Ding Xing, Hu Yanhua, ZhouJibin, Zartman R E, Yang Xiaoyong, Sun Weidong. 2009. Cretaceous ridge subduction along the Lower Yangtze River belt, Eastern China[J]. Economic Geology, 104: 303-321. doi: 10.2113/gsecongeo.104.2.303
Mao Jingwen, Xie Guiqing, Chao Duan, Pirajno F, Ishiyama D, Chen Yuchuan. 2011. A tectono-genetic model for porphyry-skarn Cu-Au-Mo-Fe and magnetite-apatite deposits along Middle-Lower Yangtze River Valley, Eastern China[J]. Ore Geology Review, 43: 294-314. doi: 10.1016/j.oregeorev.2011.07.010
Pan Yuanming, Dong Ping. 1999. The Lower Changjiang (Yangzi/Yangtze River) metallogenic belt, East China: Intrusion- and wall rock-hosted Cu-Fe-Au, Mo, Zn, Pb, Ag deposits[J]. Ore Geology Reviews, 15: 177-242. doi: 10.1016/S0169-1368(99)00022-0
Pang Ajuan, Li Shengrong, Santosh M, Yang Qingyu, Jia Baojian, Yang Chengdong. 2014. Geochemistry, and zircon U-Pb and molybdenite Re-Os geochronology of Jilongshan Cu-Au deposit, southeastern Hubei Province, China[J]. Geological Journal, 49(1): 52-68. doi: 10.1002/gj.2494
Samake B, Xu Xiaoming, Jiang Shaoyong. 2018. Oxygen fugacity, temperature and pressure estimation from mineral chemistry of the granodiorite porphyry from the Jilongshan Au-Cu deposit and the Baiguoshu prospecting area in SE Hubei Province: A guide for mineral resource exploration[J]. Journal of Geochemical Exploration, 184: 136-149. doi: 10.1016/j.gexplo.2017.10.016
Shu Quanan, Chen Peiliang, Cheng Jianrong. 1992. Geology of Iron -Copper Deposits in Eastern Hubei Province, China[M]. Beijing: The Metallurgic Industry Press, 1-510 (in Chinese).
Su Xindong. 1996. Geological characteristics of the first altered diorite tubular gold deposit in China[J]. Geology and Exploration, (3): 1-6 (in Chinese).
Vervoort J D, Pachelt P J, Gehrels G E, Nutman A P. 1996. Constraints on early Earth differentiation from hafnium and neodymium isotopes[J]. Nature, 379(6566): 624-627. doi: 10.1038/379624a0
Wang Qiang, Zhao Zhenhua, Bao Zhiwei, Xu Jifeng, Liu Wei, Li Chaofeng, Bai Zhenghua, Xiong Xiaolin. 2004. Geochemistry and petrogenesis of the Tongshankou and Yinzu adakitic intrusive rocks and the associated porphyry copper-molybdenum mineralization in southeast Hubei, East China[J]. Resource Geology, 54: 137-152. doi: 10.1111/j.1751-3928.2004.tb00195.x
Xie Guiqing, Mao Jingwen, Li Ruiling, Zhang Zusong, Zhao Weichao, Qu Wenjun, Zhao Caisheng, Wei Shikun. 2006. Metallogenic epoch and geodynamic framework of Cu-Au-Mo-(W) deposits in Southeastern Hubei Province: Constraints from Re-Os molybdenite ages[J]. Mineral Deposits, 25(1): 43-52 (in Chinese with English abstract).
Xie Guiqing, Mao Jingwen, Zhao Haijie. 2011a. Zircon U-Pb geochronological and Hf isotopic constraints on petrogenesis of Late Mesozoic intrusions in the southeast Hubei Province, Middle-Lower Yangtze River belt (MLYRB), East China[J]. Lithos, 125(1/2): 693-710.
Xie Guiqing, Mao Jingwen, Zhao Haijie, Wei Ketao, Jin Shangguang, Pan Huijun, Ke Yufu. 2011b. Timing of skarn deposit formation of the Tonglushan ore district, southeastern Hubei Province, Middle Lower Yangtze River valley metallogenic belt and its implications[J]. Ore Geology Reviews, 43(1): 62-77. doi: 10.1016/j.oregeorev.2011.05.005
Xie Guiqing, Mao Jingwen, Li Ruiling, Jiang Guohao, Zhao Caisheng, Zhao Haijie, Hou Kejun, Pan Huaijun. 2008. 40Ar-39Ar phlogopite dating of large skarn Fe deposits and tectonic framework in southeastern Hubei Province, Middle-Lower Reaches of the Yangtze River, Eastern China[J]. Acta Petrologica Sinica, 24(8): 1917-1927 (in Chinese with English abstract).
Xie Guiqing, Zhao Haijie, Zhao Caisheng, Li Xiangqian, Hou Kejun, Pan Huaijun. 2009. Re-Os dating of molybdenite from Tonglushan ore district in southeastern Hubei Province, Middle-Lower Yangtze River belt and its geological significance[J]. Mineral Deposits, 28(3): 227-239 (in Chinese with English abstract).
Yang Yizheng, Long Qun, Siebel W, Cheng Ting, Hou Zhenhui, Chen Fukun. 2014. Paleo-Pacific subduction in the interior of eastern China: Evidence from adakitic rocks in the Edong-Jiurui district[J]. The Journal of Geology, 122: 77-97 doi: 10.1086/674423
Yao Lei, Xie Guiqing, Lü Zhicheng, Zhao Caisheng, Wang Jian, Zheng Xianwei, He Zhefeng, Li Wei. 2013. Zircon U-Pb ages, geochemistry and Hf isotopes of granitoids and diorite in the Chengchao Fe deposit in southeastern Hubei ore cluster and its significance[J]. Journal of Jilin University (Earth Science Edition), 43(5): 1393-1422 (in Chinese with English abstract)
Zhang Shitao, Chen Huayong, Han Jinsheng, Zhang Yu, Chu Gaobin, Wei Ketao, Zhao Yijun, Cheng Jiamin, Tian Jing. 2018. Geochronology, geochemistry, and mineralization of quartz monzodiorite and quartz monzodiorite porphyry in Tonglushan Cu-Fe-Au deposit, Edongnan ore district, China[J]. Geochimica, 47 (3): 240-256 (in Chinese with English abstract).
Zhou Taofa, Fan Yu, Wang S W, White N C. 2017. Metallogenic regularity and metallogenic model of the Middle Lower Yangtze River valley metallogenic belt[J]. Acta Petrologica Sinica, 33(11): 3353-3372 (in Chinese with English abstract).
Zhou Taofa, Wang Shiwei, FanYu, Yuan Feng, Zhang Dayu, White N C. 2015. A review of the intracontinental porphyry deposits in the Middle Lower Yangtze River valley metallogenic belt, eastern China[J]. Ore Geology Reviews, 65: 433-456. doi: 10.1016/j.oregeorev.2014.10.002
常印佛, 刘湘培, 吴言昌. 1991. 长江中下游铁铜矿成矿带[M]. 北京: 地质出版社, 1-379.
陈富文, 梅玉萍, 李华芹. 2011. 鄂东丰山矿田花岗闪长斑岩体锆石SHRIMPU-Pb定年及其意义[J]. 地质学报, 85(1): 88-96. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201101006.htm
陈文, 阮启林, 杨伟卫, 李均, 柯于富, 范中林, 翟思. 2012. 湖北省鄂东地区金井咀矽卡岩型金矿地质特征及其成因[J]. 中国矿业, 21(4): 56-59. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKA201204020.htm
丁丽雪, 黄圭成, 夏金龙. 2018. 鄂东南地区鄂城岩体的时代、成因及其对成矿作用的指示[J]. 地球科学, 43(7): 2350-2369. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201807012.htm
龚雪婧, 曾建辉, 曹殿华. 2019. 江西冷水坑矿床含矿花岗斑岩的Sr-Nd及锆石Hf-O同位素研究[J]. 中国地质, 46(4): 818-831. http://geochina.cgs.gov.cn/geochina/article/abstract/20190412?st=search
纪敏, 赵新福, 曾丽平, 范田纬腾. 2018. 鄂东南铜绿山矿床石榴子石显微结构及微区成分对成矿过程的指示[J]. 岩石学报, 34(9): 2716-2732. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201809014.htm
李新昊, 谢桂青, 李伟, 郑先伟, 刘茂. 2018. 鄂东矿集区宝团山金铜矿床地质特征、赋矿岩体锆石U-Pb年龄和Hf同位素组成及其地质意义[J]. 地质通报, 37(7): 1346-1359. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201807018.htm
李新昊, 谢桂青. 2018. 湖北省金井咀斑岩型金矿成矿机制探讨[C]//中国地球物理学会主编. 中国地球科学联合学术年会论文集(四十). 北京: 中国和平音像电子出版社, 1-3.
舒全安, 陈培良, 程建荣. 1992. 鄂东铁铜矿产地质[M]. 北京: 冶金工业出版社, 1-532.
苏欣栋. 1996. 我国首例蚀变闪长岩岩筒型金矿地质特征[J]. 地质与勘探, (3): 1-6. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT603.000.htm
谢桂青, 毛景文, 李瑞玲, 蒋国豪, 赵财胜, 赵海杰, 侯可军, 潘怀军. 2008. 鄂东南地区大型矽卡岩型铁矿床金云母40Ar-39Ar同位素年龄及其构造背景初探[J]. 岩石学报, 24(8): 1917-1927. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200808022.htm
谢桂青, 毛景文, 李瑞玲, 张祖送, 赵维超, 屈文俊, 赵财胜, 魏世昆. 2006. 鄂东南地区Cu-Au-Mo-(W)矿床的成矿时代及其成矿地球动力学背景探讨: 辉钼矿Re-Os同位素年龄[J]. 矿床地质, 25(1): 43-52. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200601005.htm
谢桂青, 赵海杰, 赵财胜, 李向前, 侯可军, 潘怀军. 2009. 鄂东南铜绿山矿田矽卡岩型铜铁金矿床的辉钼矿Re-Os同位素年龄及其地质意义[J]. 矿床地质, 28(3): 227-239. https://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200903002.htm
姚磊, 谢桂青, 吕志成, 赵财胜, 王建, 郑先伟, 何哲峰, 李伟. 2013. 鄂东南程潮铁矿床花岗质岩和闪长岩的岩体时代、成因及地质意义—锆石年龄、地球化学和Hf同位素新证据[J]. 吉林大学学报(地球科学版), 43(5): 1393-1422. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201305009.htm
张世涛, 陈华勇, 韩金生, 张宇, 初高彬, 魏克涛, 赵逸君, 程佳敏, 田京. 2018. 鄂东南铜绿山大型铜铁金矿床成矿岩体年代学、地球化学特征及成矿意义[J]. 地球化学, 47(3): 240-256. https://www.cnki.com.cn/Article/CJFDTOTAL-DQHX201803002.htm
周涛发, 范裕, 王世伟, Noel C White. 2017. 长江中下游成矿带成矿规律和成矿模式[J]. 岩石学报, 33(11): 3353-3372. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201711002.htm
-
图(9)
表(3)
计量
- 文章访问数: 1004
- PDF下载数: 126
- 施引文献: 0