Geochemical Characteristics，Zircon U-Pb Age and Geochronological Significance of Diabase in Heiniu’ao Gold Deposit，Baoshan Block，Western Yunnan

Ying LUO; Yingxiang LU; Xuelong LIU; Shunrong XUE; Shuaishuai WANG; Zhenhuan LI; Changzhen ZHANG; Jianhang CHEN

doi:10.11872/j.issn.1005-2518.2020.01.128

2020 , Vol. 28 >Issue 1: 1 - 11

DOI: https://doi.org/10.11872/j.issn.1005-2518.2020.01.128

Mineral Exploration and Resource Evaluation

Geochemical Characteristics，Zircon U-Pb Age and Geochronological Significance of Diabase in Heiniu’ao Gold Deposit，Baoshan Block，Western Yunnan

Ying LUO ^,¹ ,
Yingxiang LU ² ,
Xuelong LIU ^,¹ ,
Shunrong XUE ² ,
Shuaishuai WANG ¹ ,
Zhenhuan LI ¹ ,
Changzhen ZHANG ¹ ,
Jianhang CHEN ¹

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^1. Faculty of Land Resource Engineering，Kunming University of Science and Technology，Kunming 650093，Yunnan，China
^2. Key Laboratory of Sanjiang Mineralization and Resource Exploration and Utilization，Ministry of Land and Resources，Kunming 650051，Yunnan，China

Received date: 2019-07-08

Revised date: 2019-10-08

Online published: 2020-02-26

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Highlights

The special geotectonic location of Baoshan block makes it undergo a series of Tethys evolutionary activities with frequent regional tectonic-magmatic activities.Granite is developed from Paleozoic to Cenozoic.In addition，a large number of basic intrusive rocks occurring as dikes and dikes are also developed in the region.Previous research and analysis of granite in the region is relatively systematic，but the study and analysis of basic rocks in the region，especially basic dikes commonly developed in typical polymetallic ore areas in the ore concentration area，is relatively weak.Previous studies and analyses only the chronology of diabase and its relationship with mineralization in the Hetaoping lead-zinc polymetallic ore area.The study and analysis of the petrogenesis of basic rocks is almost blank.Therefore，the diabase porphyrite in typical boreholes of Heiniu’ao gold deposit has been systematically analyzed in terms of petrochemical characteristics and zircon U-Pb dating in LA-ICP-MS in situ.The main elements of Heiniu’ao diabase porphyry are characterized by low SiO₂，low TiO₂，high Al₂O₃，low MgO，high FeO^T and low K₂O，belonging to the shoshonite series.Trace and rare earth elements are characterized by enrichment of light rare earth elements （LREE） and large ion lithophile elements （LILE） and depletion of high field strength elements（HFSE），suggesting that their source areas are lithospheric mantle.The content of Cr and Ni in the rocks is obviously lower than that in the original basalt magma，indicating that the magma may have undergone the crystallization separation of olivine and pyroxene.The obvious negative anomalies of Nb and Ta suggest that they were contaminated by crustal materials during the process of magma emplacement.The tectonic environment is consistent with the tectonic background of Jinchanghe diabase and Hetaoping diabase，which are intraplate extensional environments.The diagenetic age of the diabase porphyrite obtained in the mining area is （212.0±4.9） Ma，which is similar to the diagenetic age of the Hetaoping diabase obtained by predecessors （195.0±5.3） Ma，and that of the Jinchanghe diabase （217.3±5.8） Ma are all Late Triassic.It shows that the basic dikes in the area are the products of the Triassic magmatic activities.The closure of the Triassic Paleo-Tethyan Ocean resulted in the collision between Baoshan and Simao blocks，which resulted in extensional activities in Baoshan block.The basalt magma originating from the mantle emplaced upward along the weak tectonic zone to form diabase porphyrite of this time limit，and experienced crystallization differentiation and crustal contamination during the process of magma emplacement.

Cite this article

Ying LUO , Yingxiang LU , Xuelong LIU , Shunrong XUE , Shuaishuai WANG , Zhenhuan LI , Changzhen ZHANG , Jianhang CHEN . Geochemical Characteristics，Zircon U-Pb Age and Geochronological Significance of Diabase in Heiniu’ao Gold Deposit，Baoshan Block，Western Yunnan[J]. Gold Science and Technology, 2020 , 28(1) : 1 -11 . DOI: 10.11872/j.issn.1005-2518.2020.01.128

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野外地质调查工作得到了云南黄金矿业集团股份有限公司和中华教授级高工、保山隆阳矿业有限公司总经理汪海峰、副总经理康国山、李庆锐主任、付升副主任、顾友伟和王海工程师的帮助，匿名审稿专家对本文提出了诸多宝贵意见，在此一并表示衷心感谢！

References

Publishing order | Descend order by publishing year | Descend order by cited within

1	Metcalfe I.Tectonic framework and Phanerozoic evolution of Sundaland[J].Gondwana Research，2011，19（1）：3-21.

2	Metcalfe I.Gondwana dispersion and Asian accretion：Tectonic and paleogeographic evolution of eastern Tethys[J].Journal of Asian Earth Sciences，2013，66：1-33.

3	Deng J， Wang Q F， Li G J，et al.Tethys tectonic evolution and its bearing on the distribution of important mineral deposits in the Sanjiang region，SW China[J].Gondwana Research，2014，26（2）：419-437.

4	Li G J， Wang Q F， Huang Y H，et al.Discovery of Hadean-Mesoarchean crustal materials in the northern Sibumasu block and its significance for Gondwana reconstruction[J].Precambrian Research，2015，271：118-137.

5	Li G J， Wang Q F， Huang Y H，et al.Petrogenesis of middle Ordovician peraluminous granites in the Baoshan block：Implications for the Early Paleozoic tectonic evolution along East Gondwana[J].Lithos，2016，245：76-92.

6	Wang C M， Bagas L， Lu Y J，et al.Terrane boundary and spatio-temporal distribution of ore deposits in the Sanjiang Tethyan Orogen：Insights from zircon Hf-isotopic mapping[J]. Earth-Science Reviews，2016，156：39-65.

7	Chen F K， Li X H， Wang X L，et al.Zircon age and Nd-Hf isotopic composition of the Yunnan Tethyan belt，southwestern China[J].International Journal of Earth Sciences，2007，96（6）：1179-1194.

8	Liu S， Hu R Z， Gao S，et al.U-Pb zircon，geochemical and Sr-Nd-Hf isotopic constraints on the age and origin of Early Palaeozoic Ⅰ-type granite from the Tengchong-Baoshan block，western Yunnan Province，SW China[J].Journal of Asian Earth Sciences，2009，36（2/3）：168-182.

9	董美玲，董国臣，莫宣学，等.滇西保山地块早古生代花岗岩类的年代学、地球化学及意义[J].岩石学报，2012，28（5）：1453-1464. Dong Meiling， Dong Guochen， Mo Xuanxue，et al.Geochronology and geochemistry of the Early Palaeozoic granitoids in Baoshan block，western Yunnan and their implications[J].Acta Petrologica Sinica，2012，28（5）：1453-1464.

10	Ye L， Gao W， Cheng Z T，et al.LA-ICP-MS Zircon U-Pb geochronology and petrology of the Muchang alkali granite，Zhenkang County，western Yunnan Province，China[J].Acta Geologica Sinica，2010，84（6）：1488-1499.

11	聂飞，董国臣，莫宣学，等.滇西昌宁—孟连带三叠纪花岗岩地球化学、年代学及其意义[J].岩石学报，2012，28（5）：1465-1476. Nie Fei， Dong Guochen， Mo Xuanxue，et al.Geochemistry，zircon U-Pb chronology of the Triassic granites in the Changning-Menglian suture zone and their implications[J].Acta Petrologica Sinica，2012，28（5）：1465-1476.

王晓林，李维科，黄亮，等.滇西龙陵地区三叠纪蚌东花岗岩体LA-ICP-MS锆石 U-Pb年龄、地球化学特征及其构造意义[J].地质通报，2018，37（11）：2071-2078.

Wang

Xiaolin

， Li

Weike

， Huang

Liang

，et al.LA-ICP-MS zircon U-Pb age，geochemical characteristics and tectonic implications of the Bangdong granite intrusions in Longling area，western Yunnan Province[J].Geological Bulletin of China，2018，37（11）：2071-2078.

13	陶琰，胡瑞忠，朱飞霖，等.云南保山核桃坪铅锌矿成矿年龄及动力学背景分析[J].岩石学报，2010，26（6）：1760-1772. Tao Yan， Hu Ruizhong， Zhu Feilin，et al.Oreforming age and the geodynamic background of the Hetaoping lead zinc deposit in Baoshan，Yunnan[J].Acta Petrologica Sinica，2010，26（6）：1760-1772.

14	董美玲，董国臣，莫宣学，等.滇西保山地块中—新生代岩浆作用及其构造意义[J].岩石学报，2013，29（11）：3901-3913. Dong Meiling， Dong Guochen， Mo Xuanxue，et al.The Mesozoic-Cenozoic magmatism in Baoshan Block，Western Yunnan and its tectonic significance[J].Acta Petrologica Sinica，2013，29（11）：3901-3913.

禹丽，李龚健，王庆飞，等.保山地块北部晚白垩世岩浆岩成因及其构造指示：全岩地球化学、锆石U-Pb年代学和 Hf同位素制约[J] .岩石学报，2014，30（9）：2709-2724.

， Li

Gongjian

， Wang

Qingfei

，et al.Petrogenesis and tectonic significance of the Late Cretaceous magmatism in the northern part of the Baoshan block：Constraints from bulk geochemistry，zircon U-Pb geochronology and Hf isotopic compositions[J].Acta Petrologica Sinica，2014，30（9）：2709-2724.

孙柏东，王晓林，黄亮，等.保山地块漕涧复式岩体晚白垩世花岗岩地球化学特征及锆石U-Pb年代学意义[J].地质通报，2018，37（11）：2099-2111.

Sun

Baidong

， Wang

Xiaolin

， Huang

Liang

，et al.Geochemical characteristics of Late Cretaceous granites and zircon U-Pb chronological significance of the Caojian complex granites in the Baoshan block[J].Geological Bulletin of China，2018，37（11）：2099-2111.

黄静宁，陈永清， Zhai

X M

，等.滇西保山地块双脉地晚始新世过铝质花岗岩：锆石SHRIMP U-Pb定年，地球化学和成因[J].中国科学（地球科学），2011，41（4）：452-467.

Huang

Jingning

， Chen

Yongqing

， Zhai

X M

，et al.Zircon SHＲIMP U-Pb geochronology，geochemistry，and petrogenesis of the Upper Eocene Shuangmaidi peraluminous granite in Baoshan Block，western Yunnan Terrain，southwestern China[J].Scientia Sinica Terrae，2011，41（4）：452-467.

18	韩艳伟.滇西保山核桃坪铅锌矿V1矿体成矿流体演化的历史分析[D].云南：昆明理工大学，2010：20-40. Han Yanwei.A Historical Analysis of the Evolution of Ore-forming Fluids in V1 Orebody of Hetaoping Lead-Zinc Deposit，Baoshan，Western Yunnan[D].Yunnan：Kunming University of Science and Technology，2010：20-40.

王建荣，薛传东，黄河远，等.滇西保山核桃坪铅锌矿床辉绿岩地质特征、岩相学及意义[J].科学技术与工程，2013，13（17）：4884-4889.

Wang

Jianrong

， Xue

Chuandong

， Huang

Heyuan

，et al.Geological and petrography characteristics of the diabase in Hetaoping Pb-Zn deposit，Baoshan County，western Yunnan Province and its implications[J].Science Technology and Engineering，2013，13（17）：4884-4889.

20	刘绍昌，刘星，靳纪娟，等.云南保山核桃坪铅锌矿床角闪石和绿帘石族矿物特征[J].河南科学，2014，32（10）：2089-2094. Liu Shaochang， Liu Xing， Jin Jijuan，et al.The mineralogy of amphibole group and epidote group from Hetaoping lead-zinc polymetallic deposit in Baoshan，Yunnan[J].Henan Science，2014，32（10）：2089-2094.

21	杨怀. 云南保山黑牛凹金矿地质特征及成因研究[D].北京：中国地质大学，2017：18. Yang Huai. The Research on Geological Characteristics and Genesis of the Heiniu’ao Gold Deposits in Baoshan, Yunnan[D]. Beijing: China University of Geosciences,2017：18.

22	Hu Z C， Gao S， Liu Y S，et al.Signal enhancement in laser ablation ICP-MS by addition of nitrogen in the central channel gas[J].Journal of Analytical Atomic Spectrometry，2008，23：1093-1101.

23	Hu Z C， Liu Y S， Gao S，et al.A “wire” signal smoothing device for laser ablation inductively coupled plasma mass spectrometry analysis[J].Spectrochimica Acta Part B：Atomic Spectroscopy，2012，78：50-57.

24	Liu Y S， Hu Z C， Gao S，et al.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J].Chemical Geology，2008，257：34-43.

25	Liu Y S， Gao S， Hu Z C，et al.Continental and oceanic crust recycling-induced melt-peridotite interactions in the Trans-North China Orogen：U-Pb dating，Hf isotopes and trace elements in zircons of mantle xenoliths[J].Journal of Petrology，2010，51：537-571.

26	Ludwig K R.ISOPLOT 3.0：A Geochronological Toolkit for Microsoft Excel[Z].Berkeley：Berkeley Geochronology Center Special Publication，2003.

27	Hoskin P W O， Black L P.Metamorphic zircon formation by solid-state recrystallization of photolith igneous zircon[J].Journal of Metamorphic Geology，2000，18（4）：423-439.

28	吴元保，郑永飞.锆石成因矿物学及其对U-Pb年龄解释的制约[J].科学通报，2004，49（6）：1589-1604. Wu Yuanbao， Zheng Yongfei.A study on the minerageny and U-Pb dating explained of zircons[J].Chinese Science Bulletin，2004，49（16）：1589-1604.

29	Sun S S， McDonough W F.Chemical and isotopic systematics of oceanic basalts：Implications for mantle composition and processes[C]//Saunders A D，Norry M J.Magmatism in Ocean Basins.London：Geological Society of London Special Publications，1989，42（1）：313-345.

30	Weaver B L.The origin of ocean island basalt end-member compositions：Trace element and isotopic constraints[J].Earth and Planetary Science Letters，1991，104（2/3/4）：381-397.

31	赵振华，包志伟，张伯友. 湘南中生代玄武岩类地球化学特征[C].中国科学（D辑），1998，28（增）：7-14. Zhao Zhenhua， Bao Zhiwei， Zhang Boyou.Geochemical characteristics of the Mesozoic basalts from south Hunan Province[C].Science in China（Series D），1998，28（Supp.）：7-14.

32	Sklyarov E V， Gladkochub D P， Mazukabzov A M，et al.Neoproterozoic mafic dike swarms of the Sharyzhalgai metamorphic massif，southern Siberian craton[J].Precambrian Research，2003，122（1/2/3/4）：359.

33	Frey F A， Green D H.Integrated models of basalt Petrogenesis：A study of quartitholeiites to olivine melilities from southeastern Australia utilizing geochemical and experiment petrological data[J].Journal of Petrology，1978，19：463-513.

34	江思宏，聂凤军，胡朋，等.藏南基性岩墙群的地球化学特征[J].地质学报，2007，81（1）：60-71. Jiang Sihong， Nie Fengjun， Hu Peng，et al.Geochemical characteristics of the mafic dyke swarms in south Tibet[J]. Acta Geologica Sinica，2007，81（1）：60-71.

35	孙书勤，汪云亮，张成江.玄武岩类岩石大地构造环境的Th、Nb、Zr判别[J].地质评论，2003，49（1）：40-47. Sun Shuqin， Wang Yunliang， Zhang Chengjiang.Discrimination of the tectonic settings of basalts by Th,Nb and Zr[J].Geological Review，2003，49（1）：40-47.

36	刘学龙，杨富成，张昌振，等.滇西北雪鸡坪斑岩型铜矿构造特征与成矿作用研究[J].黄金科学技术，2018，26（4）：473-480. Liu Xuelong， Yang Fucheng， Zhang Changzhen，et al.Structural characteristics and mineralization of Xuejiping plrphyry copper deposit in northwest Yunnan[J].Gold Science and Technology，2018，26（4）：473-480.

37	莫宣学，潘桂棠.从特提斯到青藏高原形成：构造—岩浆事件的约束[J].地学前缘，2006，13（6）：43-51. Mo Xuanxue， Pan Guitang.From the Tethys to the formation of the Qinghai Tibet Plateau：Constrained by tectonic magmatic events[J].Earth Science Frontiers，2006，13（6）：43-51.

38	Pearce T H， Gorman B E， Birkett T C.The relationship between major element chemistry and tectonic environment of basic and intermediate volcanic rocks[J].Earth and Planetary Science Letters，1977，36（1）：121-132.

39	汪云亮，张成江，修淑芝.玄武岩类形成的大地构造环境的Th/Hf-Ta/Hf图解判别[J].岩石学报，2001，17（3）：413-421. Wang Yunliang， Zhang Chengjiang， Shuzhi Xiu.Th /Hf-Ta/Hf identification of tectonic setting of basalts[J].Acta Petrologica Sinica，2001，17（3）：413-421.

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