Beroen位于厄瓜多尔西南大洋增生地体和原生大陆地体拼接缝合带的东侧.基于矿区围岩和主要硫化物的硫铅同位素特征进行分析.除磁黄铁矿外,其他硫化物平均δ34S为0.1％,来源于深部岩浆来源硫,并有结晶基底还原硫的贡献.围岩及硫化物的206Pb/204Pb为18.605～19.147,207Pb/204Pb为15.621～15.694,208Pb/204Pb为38.378～38.967,放射性成因的异常铅,经历3个阶段,中晚白垩纪前在地幔中为均质的非放射成因铅;始新世时期,富集地幔岩浆源形成,并在浅地壳同化吸收Chaucha和Macuchi基底岩石的放射性铅;在中新世矿床形成时,与浅地壳层岩浆房的热液系统有关的成矿流体淋滤围岩的放射成因铅,在矿石矿物中更加富集地壳铅成分.同时,Chaucha成矿区矿床的矿石矿物铅同位素组成比围岩和中安第斯矿床更富集放射成因铅,这与厄瓜多尔南部中晚第三世大量中小型体积侵入体侵位有密切关系.
参考文献
| [1] | Massimo Chiaradia;Jean Vallance;Lluis Fontbote.U-Pb, Re-Os, and ~(40)Ar/~(39)Ar geochronology of the Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt of the Northern Andes[J].Mineralium deposita,20094(4):371-387. |
| [2] | Massimo Chiaradia;Lluis Fontbote;Bernardo Beate.Cenozoic continental arc magmatism and associated mineralization in Ecuador[J].Mineralium deposita,20042(2):204-222. |
| [3] | 张良;刘跃;李瑞红;黄涛;张瑞忠;陈炳翰;李金奎.胶东大尹格庄金矿床铅同位素地球化学[J].岩石学报,2014(9):2468-2480. |
| [4] | 张静;杨艳;胡海珠;王志光;李国平;李忠烈.河南银洞沟造山型银矿床碳硫铅同位素地球化学[J].岩石学报,2009(11):2833-2842. |
| [5] | 张静;杨艳;鲁颖淮.河南围山城金银成矿带铅同位素地球化学及矿床成因[J].岩石学报,2009(2):444-454. |
| [6] | Schütte, P.;Chiaradia, M.;Beate, B..Geodynamic controls on Tertiary arc magmatism in Ecuador: Constraints from U-Pb zircon geochronology of Oligocene-Miocene intrusions and regional age distribution trends[J].Tectonophysics: International Journal of Geotectonics and the Geology and Physics of the Interior of the Earth,20101/4(1/4):159-176. |
| [7] | P. Schiitte;M. Chiaradia;D. Villagomez.Metallogenic features of Miocene porphyry Cu and porphyry-related mineral deposits in Ecuador revealed by Re-Os, ~(40)Ar/~(39)Ar, and U-Pb geochronology[J].Mineralium deposita,20124(4):383-410. |
| [8] | PHILIP SCHUTTE;MASSIMO CHIARADIA;BERNARDO BEATE.Petrogenetic Evolution of Arc Magmatism Associated with Late Oligocene to Late Miocene Porphyry-Related Ore Deposits in Ecuador[J].Economic geology and the bulletin of the Society of Economic Geologists,20107(7):1243-1270. |
| [9] | 戴塔根;尹学朗;张德贤.喀拉通克铜镍矿成岩成矿模式[J].中国有色金属学报,2013(9):2567-2573. |
| [10] | 陕亮;郑有业;许荣科;曹亮;张雨莲;连永牢;李闫华.硫同位素示踪与热液成矿作用研究[J].地质与资源,2009(3):197-203. |
| [11] | 薛静;戴塔根;付松武;马国秋;黄伟盟.广西武宣盘龙铅锌矿喷流沉积成矿作用：稀土元素和硫同位素证据[J].大地构造与成矿学,2011(3):394-403. |
| [12] | Hungerbuhler D.;Steinmann M.;Winkler W.;Seward D.;Eguez A.;Peterson DE.;Helg U.;Hammer C..Neogene stratigraphy and Andean geodynamics of southern Ecuador[J].Earth-Science Reviews: The International Geological Journal Bridging the Gap between Research Articles and Textbooks,20021/2(1/2):75-124. |
| [13] | MASSIMO CHIARADIA;LLUIS FONTBOTE;AGUSTIN PALADINES.Metal Sources in Mineral Deposits and Crustal Rocks of Ecuador (1 deg N-4 deg S): A Lead Isotope Synthesis[J].Economic geology and the bulletin of the Society of Economic Geologists,20046(6):1085-1106. |
| [14] | 雷源保;赖健清;王雄军;苏生顺;王守良;陶诗龙.虎头崖多金属矿床成矿物质来源及演化[J].中国有色金属学报,2014(8):2117-2128. |
| [15] | 曹明坚;秦克章;李继亮.平坦俯冲及其成矿效应的研究进展、实例分析与展望[J].岩石学报,2011(12):3727-3748. |
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