云南金宝山铂钯矿Sr-Nd-Os同位素组成:岩浆成因及演化分析
摘要
金宝山铂钯矿是峨眉山大火成岩省具有典型意义的岩浆Ni-Cu-PGE矿床,成矿岩体岩矿石Rb-Sr,Sm-Nd,Re-Os同位素特征表明:成矿岩浆为地幔柱成因并受到岩石圈地幔和地壳混染作用的影响。εNd(260 Ma)=-1.78~+0.81,介于地幔柱与岩石圈地幔之间但明显靠近地幔柱的同位素组成。γOs(260 Ma)=20~60,高于任何端元类型的地幔储集库,体现地壳混染作用的效果。模式分析认为,成矿岩浆形成演化过程中大约有10%的岩石圈地幔熔体混合并受到5%左右的下地壳混染。
Jinbaoshan Pt-Pd deposit is a numerous Ni-Cu-PGE deposits in the Emeishan large igneous province.Sr-Nd-Os isotopic compositions of the rocks and ores showed that the ore deposit was of mantle plume generation.Values of γOs(260 Ma) ranged from 20 to 60 and εNd(260 Ma) from-1.78 to +0.81,indicating significant interaction of the plume-derived melting with the lithosphere and crustal contamination.Model analysis showed that the SCLM melting added to the plume-derived melting in proportion of about 10% and lower continental crustal contamination in proportion of about 5%.
Jinbaoshan Pt-Pd deposit is a numerous Ni-Cu-PGE deposits in the Emeishan large igneous province.Sr-Nd-Os isotopic compositions of the rocks and ores showed that the ore deposit was of mantle plume generation.Values of γOs(260 Ma) ranged from 20 to 60 and εNd(260 Ma) from-1.78 to +0.81,indicating significant interaction of the plume-derived melting with the lithosphere and crustal contamination.Model analysis showed that the SCLM melting added to the plume-derived melting in proportion of about 10% and lower continental crustal contamination in proportion of about 5%.
引文
[1]熊舜华,李建林.峨眉山区晚二叠世大陆裂谷边缘玄武岩系的特征[J].成都地质学院学报,1984,30(3):43-59.
[2]宋谢炎,侯增谦,汪云亮,等.峨眉山玄武岩的地幔热柱成因[J].矿物岩石,2002,22(4):27-32.
[3]徐义刚,钟孙霖.峨眉山大火成岩省:地幔柱活动的证据及其熔融条件[J].地球化学,2001,30(1):1-9.
[4]Chung S L,Jahn B M.Plume-lithosphere interaction in generation of the Emeishan flood basalts at the Permian-Triassic boundary[J].Ge-ology,1995,23:889-892.
[5]Xu Y,Chung S L,Jahn B M,et al.Petrological and geochemical constraints on the petrogenesis of the Permo-Triassic Emeishan Flood ba-salts in southwestern China[J].Lithos,2001,58:145-168.
[6]张成江,刘家铎,刘显凡,等.峨眉火成岩省成矿效应初探[J].矿物岩石,2004,24(1):5-9.
[7]胡瑞忠,陶琰,钟宏,等.地幔柱成矿系统:以峨眉山地幔柱为例[J].地学前缘,2005,12(1):42-54.
[8]钟宏,朱维光,漆亮,等.攀西地区峨眉山玄武岩的铂族元素地球化学特征[J].科学通报,2006,51(11):1 297-1 304.
[9]宋谢炎,张成江,胡瑞忠,等.峨眉火成岩省岩浆矿床成矿作用与地幔柱动力学过程的耦合关系[J].矿物岩石,2005,25(4):35-44.
[10]陶琰,马言胜,苗来成,等.云南金宝山超镁铁岩体锆石SHRIMP年龄[J].科学通报,2008,53(22):2 828-2 832.
[11]Zhong H,Zhu W G.Geochronology of layered mafic intrusions from the Pan-Xi area in the Emeishan large igneous province,SW China[J].Miner Depos,2006,41:599-606.
[12]范蔚茗,王岳军,彭头平,等.桂西晚古生代玄武岩Ar/Ar和U/Pb年代学及其对峨眉山玄武岩省喷发时代的约束[J].科学通报,2004,49(18):1 892-1 900.
[13]王登红,李建康,王成辉,等.与峨眉地幔柱有关年代学研究的新进展及其意义[J].矿床地质,2007,26(5):550-556.
[14]陶琰,罗泰义,高振敏,等.西南暗色岩铜镍硫化物矿化岩体与峨眉山玄武岩的关系-以云南金宝山超镁铁岩为例[J].地质论评,2004,50(1):9-15.
[15]陶琰,胡瑞忠,杜安道,等.峨眉山大火成岩省岩浆铜镍铂族元素矿床成矿作用系统性研究[J].矿床地质,(增刊:第八届全国矿床会议论文集),2006,250-254.
[16]马言胜,陶琰,钟宏,等.四川阿布郎当超镁铁质岩体的地球化学特征:原始岩浆、地幔部分熔融程度及成岩过程分析[J].岩石学报,2009,25(5):1 146-1 158.
[17]马言胜,陶琰,钟宏,等.云南金宝山超镁铁质侵入体中铬铁矿的矿物化学及成因研究[J].矿物学报,2007,27(3/4):342-350.
[18]Zhong H,Zhu W G,Chu Z Y,et al.Shrimp U-Pb zircon geochronology,geochemistry,and Nd-Sr isotopic study of contrasting granites inthe Emeishan large igneous province,SW China[J].Chem Geol,2007,236:112-133.
[19]屈文俊,杜安道.铜镍硫化物的Re-Os同位素定年方法及应用实例[J].地球学报,2005,26(Supl):140-142.
[20]Jacobsen S B,Wasserburg G J.Sm-Nd isotopic evolution of chondrites[J].Earth Planet Sci Lett,1980,50:139-155.
[21]Smoliar M I,Walker R J,Morgan J W.Re-Os ages of group IIA,IIIA,IVA,and IVB iron meteorites[J].Science,1996,271:1 099-1 102.
[22]Walker R J,Morgan J W.Rhenium-osmium systematics of carbonaceous chondrites[J].Science,1989,243:19-522.
[23]Hofmann A W.Sampling Mantle Heterogeneity through Oceanic Basalts:Isotopes and Trace Elements[A].In:The Mantle and Core-Trea-tise on Geochemistry Volume2[C].Edited by Carlson R W,Elsevier,2003,61-101.
[24]Farmer G L.Continental Basaltic Rocks[A].In:The Crust-Treatise on Geochemistry Volume3[C].Edited by Rudnick R L,Elsevier,2003,85-121.
[25]Zhou M F,Arndt N T,Malpas J,et al.Two magma series and associated ore deposit types in the Permian Emeishan large igneous prov-ince,SW China[J].Lithos,2008,103(3-4):352-368.
[26]Tao Y,Li C,Song X Y,et al.Mineralogical,petrological,and geochemical studies of the Limahe mafic-ultramatic intrusion and associatedNi-Cu sulfide ores,SW China[J].Miner Depos,2008,43:849-872.
[27]Zhang M,Reilly S Y O,Wang K-L,et al.Flood basalts and metallogeny:The lithospheric mantle connection[J].Earth Sci Rev,2008,86:145-174.
[28]Arndt N T,Czamanske G,Walker R J,et al.Geochemistry and origin of the intrusive hosts of the Noril sk-Talnakh Cu-Ni-PGE sulfide de-posits[J].Econ Geol,2003,98:495-515.
[29]Revillon S,Chauvel C,Arndt N T,et al.Heterogeneity of the Caribbean plateau mantle[J].Earth Planet Sci Lett,2002,205:91-106.
[30]陶琰,朱丹,高振敏,等.金宝山铂族元素矿床铂族元素的热液活动研究[J].矿物岩石地球化学通报,2003,22(1):32-37.
[31]陶琰,胡瑞忠,屈文俊,等.力马河镍矿Re-Os同位素研究[J].地质学报,2008,82(9):1 292-1 304.
[32]陶琰,胡瑞忠,漆亮,等.四川力马河镁铁-超镁铁质岩体的地球化学特征及成矿分析[J].岩石学报,2007,23(11):2785-00.
[33]何斌,徐义刚,肖龙,等.峨眉山地幔柱上升的沉积响应及其地质意义[J].地质论评,2006,52(1):30-37.
[34]张招崇,王福生.峨眉山玄武岩区两类玄武岩的地球化学:地幔柱-岩石圈相互作用的证据[J].地质学报,2002,76(2):281-288.
[35]肖龙,徐义刚,何斌.峨眉地幔柱-岩石圈的相互作用:来自低钛和高钛玄武岩的Sr-Nd和O同位素证据[J].高校地质学报,2003,9(2):207-217.
[36]侯增谦,卢记仁,林盛中.峨眉地幔柱轴部的榴辉岩-地幔岩源区:主元素、痕量元素及Sr,Nd,Pb同位素证据[J].地质学报,2005,79(2):200-219.
[37]Klügel A,Hansteen T H,Galipp K.Magma storage and underplating beneath Cumbre Vieja volcano,La Palma(Canary Islands)[J].EarthPlanet Sci Lett,2005,236:211-226.
[38]Li C,Ripley E M,Naldrett A J.Compositional variations of olivine and sulfur isotopes in the Noril'sk and Talnakh intrusions:Implicationsfor ore forming processes in dynamic magma conduits[J].Econ Geol,2003,98:69-86.
[39]Qi L,Zhou M-F.Platinum-group elemental and Sr-Nd-Os isotopic geochemistry of Permian Emeishan flood basalts in Guizhou Province,SW China[J].Chem Geol,2008,248:83-103.
[40]Zhang Z C,Zhi X C,Chen L,et al.Re-Os isotopic compositions of picrites from the Emeishan flood basalt province,China[J].Earth PlanetSci Lett,2008,276:30-39.
[41]Xu J F,Suzuki K,Xu Y G,et al.Os,Pb,and Nd isotope geochemistry of the Permian Emeishan continental flood basalts:Insights into thesource of a large igneous province[J].Geochim Cosmochim Acta,2007,71:2 104-2 119.
[42]Wang C Y,Zhou M F,Qi L.Permian flood basalts and mafic intrusions in the Jinping(SW China)-Song Da(northern Vietnam)district:mantle sources,crustal contamination and sulfde segregation[J].Chem Geol,2007,243:317-343.
[43]陶琰,高振敏,罗泰义,等.云南金宝山超镁铁岩原始岩浆成分反演[J].岩石学报,2002,18(1):70-82.
[44]Ripley E M,Lambert D D,Frick L R.Re-Os,Sm-Nd,and Pb isotopic constraints on mantle and crustal contributions to magmatic sulfidemineralization in the Duluth Complex[J].Geochim Cosmochim Acta,1999,62:3 349-3 365.
[45]Shirey S B.Re-Os isotopic compositions of Midcontinent rift system picrites:Implications for plume-Lithosphere Interaction and EnrichedMantle Source[J].Can J Earth Sci,1997,34:489-503.
[46]Saal A E,Rudnick R L,Ravizza G E,et al.Re-Os isotope evidence for the composition,formation and age of the lower continental crust[J].Nature,1998,393(7):58-61.
[47]Esser B K,Turekian K K.The osmium isotopic composition of the continental crust[J].Geochim Cosmochim Acta,1993,57:3 093-3 104.
[48]Putirka K.Magma transport at Hawaii:Inferences based on igneous thermobarometry[J].Geology,1997,25(1):69-72.
[49]Zhu D,Luo T Y,Gao Z.M,et al.Differentiation of the Emeishan flood basalts at the base and throughout the crust of southwest China[J].Intern Geol Rev,2003,45:471-477.
[50]Fan W M,Zhang C H,Wang Y J,et al.Geochronology and geochemistry of Permian basalts in western Guangxi Province,Southwest Chi-na:Evidence for plume-lithosphere interaction[J].Lithos,2008,102:218-236.
[51]Fleet M E,Crocket J H,Stone W E.Partitioning of platinum-group elements(Os,Ir,Ru,Pt,Pd)and gold between sulfide liquid and basaltmelt[J].Geochim Cosmochim Acta,1996,60(13):2 397-2 412.
[52]Lambert D D,Frick L R,Foster J G,et al.Geodynamics of magmatic Cu-Ni-PGE sulfide deposits:New insights from the Re-Os isotopesystem[J].Econ Geol,1998,93:121-136.
[53]Hauri E K,Hart S R.Rhenium abundances and systematics in oceanic basalts[J].Chem Geol,1997,139:185-205.
[54]Maier W D,Barnes S-J.Formation of PGE deposits in layered intrusions[A].In:Li C,Ripley E M(Eds.).New Developments in MagmaticNi-Cu and PGE Deposits[C].Geological Publishing House,Beijing,China,2009,250-276.
①杨廷祥.云南省弥渡县金宝山铂钯矿典型矿床研究报告.云南地矿局第三地质大队,1989.
[2]宋谢炎,侯增谦,汪云亮,等.峨眉山玄武岩的地幔热柱成因[J].矿物岩石,2002,22(4):27-32.
[3]徐义刚,钟孙霖.峨眉山大火成岩省:地幔柱活动的证据及其熔融条件[J].地球化学,2001,30(1):1-9.
[4]Chung S L,Jahn B M.Plume-lithosphere interaction in generation of the Emeishan flood basalts at the Permian-Triassic boundary[J].Ge-ology,1995,23:889-892.
[5]Xu Y,Chung S L,Jahn B M,et al.Petrological and geochemical constraints on the petrogenesis of the Permo-Triassic Emeishan Flood ba-salts in southwestern China[J].Lithos,2001,58:145-168.
[6]张成江,刘家铎,刘显凡,等.峨眉火成岩省成矿效应初探[J].矿物岩石,2004,24(1):5-9.
[7]胡瑞忠,陶琰,钟宏,等.地幔柱成矿系统:以峨眉山地幔柱为例[J].地学前缘,2005,12(1):42-54.
[8]钟宏,朱维光,漆亮,等.攀西地区峨眉山玄武岩的铂族元素地球化学特征[J].科学通报,2006,51(11):1 297-1 304.
[9]宋谢炎,张成江,胡瑞忠,等.峨眉火成岩省岩浆矿床成矿作用与地幔柱动力学过程的耦合关系[J].矿物岩石,2005,25(4):35-44.
[10]陶琰,马言胜,苗来成,等.云南金宝山超镁铁岩体锆石SHRIMP年龄[J].科学通报,2008,53(22):2 828-2 832.
[11]Zhong H,Zhu W G.Geochronology of layered mafic intrusions from the Pan-Xi area in the Emeishan large igneous province,SW China[J].Miner Depos,2006,41:599-606.
[12]范蔚茗,王岳军,彭头平,等.桂西晚古生代玄武岩Ar/Ar和U/Pb年代学及其对峨眉山玄武岩省喷发时代的约束[J].科学通报,2004,49(18):1 892-1 900.
[13]王登红,李建康,王成辉,等.与峨眉地幔柱有关年代学研究的新进展及其意义[J].矿床地质,2007,26(5):550-556.
[14]陶琰,罗泰义,高振敏,等.西南暗色岩铜镍硫化物矿化岩体与峨眉山玄武岩的关系-以云南金宝山超镁铁岩为例[J].地质论评,2004,50(1):9-15.
[15]陶琰,胡瑞忠,杜安道,等.峨眉山大火成岩省岩浆铜镍铂族元素矿床成矿作用系统性研究[J].矿床地质,(增刊:第八届全国矿床会议论文集),2006,250-254.
[16]马言胜,陶琰,钟宏,等.四川阿布郎当超镁铁质岩体的地球化学特征:原始岩浆、地幔部分熔融程度及成岩过程分析[J].岩石学报,2009,25(5):1 146-1 158.
[17]马言胜,陶琰,钟宏,等.云南金宝山超镁铁质侵入体中铬铁矿的矿物化学及成因研究[J].矿物学报,2007,27(3/4):342-350.
[18]Zhong H,Zhu W G,Chu Z Y,et al.Shrimp U-Pb zircon geochronology,geochemistry,and Nd-Sr isotopic study of contrasting granites inthe Emeishan large igneous province,SW China[J].Chem Geol,2007,236:112-133.
[19]屈文俊,杜安道.铜镍硫化物的Re-Os同位素定年方法及应用实例[J].地球学报,2005,26(Supl):140-142.
[20]Jacobsen S B,Wasserburg G J.Sm-Nd isotopic evolution of chondrites[J].Earth Planet Sci Lett,1980,50:139-155.
[21]Smoliar M I,Walker R J,Morgan J W.Re-Os ages of group IIA,IIIA,IVA,and IVB iron meteorites[J].Science,1996,271:1 099-1 102.
[22]Walker R J,Morgan J W.Rhenium-osmium systematics of carbonaceous chondrites[J].Science,1989,243:19-522.
[23]Hofmann A W.Sampling Mantle Heterogeneity through Oceanic Basalts:Isotopes and Trace Elements[A].In:The Mantle and Core-Trea-tise on Geochemistry Volume2[C].Edited by Carlson R W,Elsevier,2003,61-101.
[24]Farmer G L.Continental Basaltic Rocks[A].In:The Crust-Treatise on Geochemistry Volume3[C].Edited by Rudnick R L,Elsevier,2003,85-121.
[25]Zhou M F,Arndt N T,Malpas J,et al.Two magma series and associated ore deposit types in the Permian Emeishan large igneous prov-ince,SW China[J].Lithos,2008,103(3-4):352-368.
[26]Tao Y,Li C,Song X Y,et al.Mineralogical,petrological,and geochemical studies of the Limahe mafic-ultramatic intrusion and associatedNi-Cu sulfide ores,SW China[J].Miner Depos,2008,43:849-872.
[27]Zhang M,Reilly S Y O,Wang K-L,et al.Flood basalts and metallogeny:The lithospheric mantle connection[J].Earth Sci Rev,2008,86:145-174.
[28]Arndt N T,Czamanske G,Walker R J,et al.Geochemistry and origin of the intrusive hosts of the Noril sk-Talnakh Cu-Ni-PGE sulfide de-posits[J].Econ Geol,2003,98:495-515.
[29]Revillon S,Chauvel C,Arndt N T,et al.Heterogeneity of the Caribbean plateau mantle[J].Earth Planet Sci Lett,2002,205:91-106.
[30]陶琰,朱丹,高振敏,等.金宝山铂族元素矿床铂族元素的热液活动研究[J].矿物岩石地球化学通报,2003,22(1):32-37.
[31]陶琰,胡瑞忠,屈文俊,等.力马河镍矿Re-Os同位素研究[J].地质学报,2008,82(9):1 292-1 304.
[32]陶琰,胡瑞忠,漆亮,等.四川力马河镁铁-超镁铁质岩体的地球化学特征及成矿分析[J].岩石学报,2007,23(11):2785-00.
[33]何斌,徐义刚,肖龙,等.峨眉山地幔柱上升的沉积响应及其地质意义[J].地质论评,2006,52(1):30-37.
[34]张招崇,王福生.峨眉山玄武岩区两类玄武岩的地球化学:地幔柱-岩石圈相互作用的证据[J].地质学报,2002,76(2):281-288.
[35]肖龙,徐义刚,何斌.峨眉地幔柱-岩石圈的相互作用:来自低钛和高钛玄武岩的Sr-Nd和O同位素证据[J].高校地质学报,2003,9(2):207-217.
[36]侯增谦,卢记仁,林盛中.峨眉地幔柱轴部的榴辉岩-地幔岩源区:主元素、痕量元素及Sr,Nd,Pb同位素证据[J].地质学报,2005,79(2):200-219.
[37]Klügel A,Hansteen T H,Galipp K.Magma storage and underplating beneath Cumbre Vieja volcano,La Palma(Canary Islands)[J].EarthPlanet Sci Lett,2005,236:211-226.
[38]Li C,Ripley E M,Naldrett A J.Compositional variations of olivine and sulfur isotopes in the Noril'sk and Talnakh intrusions:Implicationsfor ore forming processes in dynamic magma conduits[J].Econ Geol,2003,98:69-86.
[39]Qi L,Zhou M-F.Platinum-group elemental and Sr-Nd-Os isotopic geochemistry of Permian Emeishan flood basalts in Guizhou Province,SW China[J].Chem Geol,2008,248:83-103.
[40]Zhang Z C,Zhi X C,Chen L,et al.Re-Os isotopic compositions of picrites from the Emeishan flood basalt province,China[J].Earth PlanetSci Lett,2008,276:30-39.
[41]Xu J F,Suzuki K,Xu Y G,et al.Os,Pb,and Nd isotope geochemistry of the Permian Emeishan continental flood basalts:Insights into thesource of a large igneous province[J].Geochim Cosmochim Acta,2007,71:2 104-2 119.
[42]Wang C Y,Zhou M F,Qi L.Permian flood basalts and mafic intrusions in the Jinping(SW China)-Song Da(northern Vietnam)district:mantle sources,crustal contamination and sulfde segregation[J].Chem Geol,2007,243:317-343.
[43]陶琰,高振敏,罗泰义,等.云南金宝山超镁铁岩原始岩浆成分反演[J].岩石学报,2002,18(1):70-82.
[44]Ripley E M,Lambert D D,Frick L R.Re-Os,Sm-Nd,and Pb isotopic constraints on mantle and crustal contributions to magmatic sulfidemineralization in the Duluth Complex[J].Geochim Cosmochim Acta,1999,62:3 349-3 365.
[45]Shirey S B.Re-Os isotopic compositions of Midcontinent rift system picrites:Implications for plume-Lithosphere Interaction and EnrichedMantle Source[J].Can J Earth Sci,1997,34:489-503.
[46]Saal A E,Rudnick R L,Ravizza G E,et al.Re-Os isotope evidence for the composition,formation and age of the lower continental crust[J].Nature,1998,393(7):58-61.
[47]Esser B K,Turekian K K.The osmium isotopic composition of the continental crust[J].Geochim Cosmochim Acta,1993,57:3 093-3 104.
[48]Putirka K.Magma transport at Hawaii:Inferences based on igneous thermobarometry[J].Geology,1997,25(1):69-72.
[49]Zhu D,Luo T Y,Gao Z.M,et al.Differentiation of the Emeishan flood basalts at the base and throughout the crust of southwest China[J].Intern Geol Rev,2003,45:471-477.
[50]Fan W M,Zhang C H,Wang Y J,et al.Geochronology and geochemistry of Permian basalts in western Guangxi Province,Southwest Chi-na:Evidence for plume-lithosphere interaction[J].Lithos,2008,102:218-236.
[51]Fleet M E,Crocket J H,Stone W E.Partitioning of platinum-group elements(Os,Ir,Ru,Pt,Pd)and gold between sulfide liquid and basaltmelt[J].Geochim Cosmochim Acta,1996,60(13):2 397-2 412.
[52]Lambert D D,Frick L R,Foster J G,et al.Geodynamics of magmatic Cu-Ni-PGE sulfide deposits:New insights from the Re-Os isotopesystem[J].Econ Geol,1998,93:121-136.
[53]Hauri E K,Hart S R.Rhenium abundances and systematics in oceanic basalts[J].Chem Geol,1997,139:185-205.
[54]Maier W D,Barnes S-J.Formation of PGE deposits in layered intrusions[A].In:Li C,Ripley E M(Eds.).New Developments in MagmaticNi-Cu and PGE Deposits[C].Geological Publishing House,Beijing,China,2009,250-276.
①杨廷祥.云南省弥渡县金宝山铂钯矿典型矿床研究报告.云南地矿局第三地质大队,1989.
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