滇西保山地块黑牛凹金矿区辉绿玢岩地球化学特征、锆石U-Pb年龄及地质意义全文
Alternative TitleGeochemical Characteristics,Zircon U-Pb Age and Geochronological Significance of Diabase in Heiniu’ao Gold Deposit,Baoshan Block,Western Yunnan全文
罗应1; 卢映祥2
2020-02-29
Source Publication黄金科学技术
Volume28Issue:1Pages:1-11
Abstract通过对保山地块黑牛凹金矿区内辉绿玢岩进行LA-ICP-MS原位微区锆石U-Pb定年和岩石地球化学特征分析,获得了辉绿玢岩的成岩年龄为(212.0±4.9) Ma,这一时限与核桃坪矿区内辉绿玢岩成岩时限(195.0±5.3) Ma,以及金厂河矿区辉绿玢岩成岩时限(217.3±5.8) Ma具有一致性,均属晚三叠世。黑牛凹辉绿玢岩具有低SiO、低MgO及高钾特征,属于钾玄系列。微量元素具有富集轻稀土元素(LREE)、大离子亲石元素(LILE)及亏损高场强元素(HFSE)的特征,暗示其源区为岩石圈地幔。岩石中的Cr、Ni元素含量明显比原始玄武岩浆低,表明岩浆可能经历了橄榄石和辉石的结晶分离作用。Nb、Ta元素具明显负异常,暗示在岩浆上升侵位过程中受到了地壳物质的混染。黑牛凹辉绿玢岩形成的构造背景与区域内金厂河辉绿岩、核桃坪辉绿岩一致,均为板内拉张环境,这可能与古特提斯洋闭合导致保山地块因碰撞而发生的内部拉张、伸展活动有关。
Other AbstractThe 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 SiO,low TiO,high AlO,low MgO,high FeO and low KO,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.
Keyword辉绿玢岩 锆石U-Pb定年 地球化学特征 晚三叠世 板内拉张环境 滇西
DOI10.11872/j.issn.1005-2518.2020.01.128
Language中文
References1 .Tectonic framework and Phanerozoic evolution of Sundaland[J].Gondwana Research,2011,19(1):3-21.
2 .Gondwana dispersion and Asian accretion:Tectonic and paleogeographic evolution of eastern Tethys[J].Journal of Asian Earth Sciences,2013,66:1-33.
3 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 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 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 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 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 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. 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 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. 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.
12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. 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. 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. et al.The Mesozoic-Cenozoic magmatism in Baoshan Block,Western Yunnan and its tectonic significance[J].Acta Petrologica Sinica,2013,29(11):3901-3913.
15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. 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.
16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. 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.
17黄静宁陈永清 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. 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. .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.
19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. 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. 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. . 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 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 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 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 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 .ISOPLOT 3.0:A Geochronological Toolkit for Microsoft Excel[Z].Berkeley:Berkeley Geochronology Center Special Publication,2003.
27 .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. .A study on the minerageny and U-Pb dating explained of zircons[J].Chinese Science Bulletin,2004,49(16):1589-1604.
29 .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 .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. .Geochemical characteristics of the Mesozoic basalts from south Hunan Province[C].Science in China(Series D),1998,28(Supp.):7-14.
32 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 .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. 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. .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. 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. .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 .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. .Th /Hf-Ta/Hf identification of tectonic setting of basalts[J].Acta Petrologica Sinica,2001,17(3):413-421.
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Document Type期刊论文
Identifierhttp://119.78.100.147:8080/handle/2SELTVKS/83338
Collection骨干期刊_黄金科学技术
Affiliation1.理工大学国土资源工程学院,云南 昆明 650093
2.资源部三江成矿作用及资源勘查利用重点实验室,云南 昆明 650051
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罗应,卢映祥. 滇西保山地块黑牛凹金矿区辉绿玢岩地球化学特征、锆石U-Pb年龄及地质意义[J]. 黄金科学技术,2020,28(1):1-11.
APA 罗应,&卢映祥.(2020).滇西保山地块黑牛凹金矿区辉绿玢岩地球化学特征、锆石U-Pb年龄及地质意义.黄金科学技术,28(1),1-11.
MLA 罗应,et al."滇西保山地块黑牛凹金矿区辉绿玢岩地球化学特征、锆石U-Pb年龄及地质意义".黄金科学技术 28.1(2020):1-11.
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