摘要
The Anjing Hitam Pb-Zn deposit in northern Sumatra(Indonesia) is one of the largest Pb-Zn deposits in the region. The stratiform orebodies are mainly hosted in the middle member of the Carboniferous–Permian Kluet Formation of the Tapanuli Group. Mineral paragenesis and crosscutting relationships suggest a two-stage Pb-Zn mineralization:(I) sedimentary and(Ⅱ) hydrothermal mineralization. Ore-related calcite from both stages Ⅰ and Ⅱ contains mainly liquid-and gas-liquid two-phase-type fluid inclusions(FI). For stage I ore-forming fluids, FI homogenization temperatures(T_h) are 105 to 199 oC, and the salinities are 9.6 wt.% to 16.6 wt.% NaCleqiv, reflecting low temperature and medium-low salinity; whereas in stage Ⅱ, the T_h(206 to 267 oC) and salinity(19.0 wt.% to 22.5 wt.% NaCleqiv) are considerably higher. Fluid inclusion and C-O isotope characteristics suggest that the stage I ore-forming fluids were mainly derived from a mixture of seawater and magmatic fluids(probably from deep-lying plutons), whereas the stage Ⅱ ore-forming fluids were likely magmatic-derived with wall rock input. We propose that the Anjing Hitam deposit was a Carboniferous exhalative sedimentary(SEDEX) deposit overprinted by the Pleistocene vein-style magmatic-hydrothermal mineralization.
The Anjing Hitam Pb-Zn deposit in northern Sumatra(Indonesia) is one of the largest Pb-Zn deposits in the region. The stratiform orebodies are mainly hosted in the middle member of the Carboniferous–Permian Kluet Formation of the Tapanuli Group. Mineral paragenesis and crosscutting relationships suggest a two-stage Pb-Zn mineralization:(I) sedimentary and(Ⅱ) hydrothermal mineralization. Ore-related calcite from both stages Ⅰ and Ⅱ contains mainly liquid-and gas-liquid two-phase-type fluid inclusions(FI). For stage I ore-forming fluids, FI homogenization temperatures(T_h) are 105 to 199 oC, and the salinities are 9.6 wt.% to 16.6 wt.% NaCleqiv, reflecting low temperature and medium-low salinity; whereas in stage Ⅱ, the T_h(206 to 267 oC) and salinity(19.0 wt.% to 22.5 wt.% NaCleqiv) are considerably higher. Fluid inclusion and C-O isotope characteristics suggest that the stage I ore-forming fluids were mainly derived from a mixture of seawater and magmatic fluids(probably from deep-lying plutons), whereas the stage Ⅱ ore-forming fluids were likely magmatic-derived with wall rock input. We propose that the Anjing Hitam deposit was a Carboniferous exhalative sedimentary(SEDEX) deposit overprinted by the Pleistocene vein-style magmatic-hydrothermal mineralization.
引文
Badham,J.P.N.,Williams,P.J.,1981.Genetic and Exploration Models for Sulfide Ores in Metaophiolites,Northwest Spain.Economic Geology,76(8):2118-2127.https://doi.org/10.2113/gsecongeo.76.8.2118
Barber,A.J.,Crow,M.J.,2003.An Evaluation of Plate Tectonic Models for the Development of Sumatra.Gondwana Research,6(1):1-28.https://doi.org/10.1016/s1342-937x(05)70642-0
Basuki,N.I.,2002.A Review of Fluid Inclusion Temperatures and Salinities in Mississippi Valley-Type Zn-Pb Deposits:Identifying Thresholds for Metal Transport.Exploration and Mining Geology,11(1/2/3/4):1-17.https://doi.org/10.2113/11.1-4.1
Betts,P.G.,Giles,D.,Lister,G.S.,2003.Tectonic Environment of Shale-Hosted Massive Sulfide Pb-Zn-Ag Deposits of Proterozoic Northeastern Australia.Economic Geology,98(3):557-576.https://doi.org/10.2113/gsecongeo.98.3.557
Betts,P.G.,Lister,G.S.,2002.Geodynamically Indicated Targeting Strategy for Shale-Hosted Massive Sulfide Pb-Zn-Ag Mineralisation in the Western Fold Belt,Mt Isa Terrane.Australian Journal of Earth Sciences,49(6):985-1010.https://doi.org/10.1046/j.1440-0952.2002.00965.x
Brown,P.E.,Lamb,W.M.,1989.P-V-T Properties of Fluids in the System H2O±CO2±NaCl:New Graphical Presentations and Implications for Fluid Inclusion Studies.Geochimica et Cosmochimica Acta,53(6):1209-1221.https://doi.org/10.1016/0016-7037(89)90057-4
Burrett,C.,Zaw,K.,Meffre,S.,et al.,2014.The Configuration of Greater Gondwana-Evidence from LA ICPMS,U-Pb Geochronology of Detrital Zircons from the Palaeozoic and Mesozoic of Southeast Asia and China.Gondwana Research,26(1):31-51.https://doi.org/10.1016/j.gr.2013.05.020
Cameron,N.R.,Bennett,J.D.,Bridge,D.M.,et al.,1982.The Geology of the Tapaktuan Quadrangle(0519),Sumatra.Scale 1:250 000.Geological Survey of Indonesia,Directorate of Mineral Resources,Geological Research and Development Centre,Bandung.19
Cameron,N.R.,Clarke,M.C.G.,Aldiss,D.T.,et al.,1980.The Geological Evolution of Northern Sumatra.Indonesian Petroleum Association,1:149-187
Cao,D.T.,Tuyen,N.H.,Le,V.D.,et al.,2005.Evolution of Faulting Tectonics in Southeast Asia.Crustal Deformation&Earthquake,25(1):51-60.https://doi.org/10.14075/j.jgg.2005.01.010
Chen,Y.J.,Ni,P.,Fan,H.R.,et al.,2007.Diagnostic Fluid Inclusions of Different Types Hydrothermal Gold Deposits.Acta Petrologica Sinica,23(9):2085-2108(in Chinese with English Abstract)
Cooke,D.R.,Bull,S.W.,Large,R.R.,et al.,2000.The Importance of Oxidized Brines for the Formation of Australian Proterozoic Stratiform Sediment-Hosted Pb-Zn(Sedex)Deposits.Economic Geology,95(1):1-18.https://doi.org/10.2113/gsecongeo.95.1.1
Crow,M.J.,Barber,A.J.,2005.Map:Simplified Geological Map of Sumatra.Geological Society,London,Memoirs,31(1):NP.2-NP.19.https://doi.org/10.1144/gsl.mem.2005.031.01.17
Crow,M.J.,van Leeuwen,T.M.,2005.Metallic Mineral Deposits.In:Barber,A.J.,Crow,M.J.,Milsom,J.S.,eds.,Sumatra:Geology,Resources and Tectonic Evolution.Geological Society of London,London.147-174
Deng,J.,Wang,C.M.,Bagas,L.,et al.,2015.Cretaceous-Cenozoic Tectonic History of the Jiaojia Fault and Gold Mineralization in the Jiaodong Peninsula,China:Constraints from Zircon U-Pb,Illite K-Ar,and Apatite Fission Track Thermochronometry.Mineralium Deposita,50(8):987-1006.https://doi.org/10.1007/s00126-015-0584-1
Deng,J.,Wang,Q.F.,Li,G.J.,2017.Tectonic Evolution,Superimposed Orogeny,and Composite Metallogenic System in China.Gondwana Research,50:216-266.https://doi.org/10.1016/j.gr.2017.02.005
Gao,X.W.,Yang,Z.Q.,Wu,X.R.,2013.A Discussion on Mineralization within Magmatic Cycles,Sumatra(Indonesia).Geology and Mineral Resources of South China,29(4):299-307(in Chinese with English Abstract)
Genrich,J.F.,Bock,Y.,McCaffrey,R.,et al.,2000.Distribution of Slip at the Northern Sumatran Fault System.Journal of Geophysical Research:Solid Earth,105(B12):28327-28341.https://doi.org/10.1029/2000jb900158
Goldstein,R.H.,2003.Petrographic Analysis of Fluid Inclusions.In:Samson,I.,Anderson,A.,Marshall,D.,eds.,Fluid Inclusions:Analysis and Interpretation.Mineralogical Association of Canada Short Course Series,Vancouver.9-53
Goodfellow,W.D.,Lydon,J.W.,2007.Sedimentary Exhalative(SEDEX)Deposits.In:Goodfellow,W.D.,ed.,Mineral Deposits of Canada:ASynthesis of Major Deposit Types,District Metallogeny,the Evolution of Geological Provinces,and Exploration Methods.Geological Association of Canada,Mineral Deposits Division,Special Publication,Toronto.163-183
Han,F.,Sun,H.T.,1999.Metallogenic System of SEDEX Type Deposits:A Review.Earth Science Frontiers(China University of Geosciences,Beijing),1:139-142(in Chinese with English Abstract)
Hoefs,J.,1973.Stable Isotope Geochemistry.Springer-Verlag,BerlinHeidelberg-New York.140
Hou,Z.Q.,Mo,X.X.,Yang,Z.M.,et al.,2006a.Metallogenesis in the Collisional Orogen of the Qinghai-Tibet Plateau:Tectonic Setting,Tempo-Spatial Distribution and Ore Deposit Types.Geology in China,33(2):340-351(in Chinese with English Abstract)
Hou,Z.Q.,Yang,Z.S.,Xu,W.Y.,et al.,2006b.Metallogenesis in Tibetan Collisional Orogenic Belt:I.Mineralization in Main Collisional Orogenic Setting.Mineral Deposits,25(4):337-358(in Chinese with English Abstract)
Hu,J.,Zhang,S.T.,Zhang,G.Z.,et al.,2017.Geochemistry and Tectonic Setting of the Eshan Granites in the Southwestern Margin of the Yangtze Plate,Yunnan.Journal of Earth Science,29(1):130-143.https://doi.org/10.1007/s12583-017-0747-3
Hutchison,C.S.,Taylor,D.,1978.Metallogenesis in SE Asia.Journal of the Geological Society,135(4):407-428.https://doi.org/10.1144/gsjgs.135.4.0407
Jamaludin,S.N.F.,Pubellier,M.,Menier,D.,2017.Structural Restoration of Carbonate Platform in the Southern Part of Central Luconia,Malaysia.Journal of Earth Science,29(1):1-14.https://10.1007/s12583-017-0812-y
Jankovi?,S.,2001.Tectonic Setting and Metallogenesis of the Principal Sectors of the Tethyan Eurasian Metallogenic Belt.Geotectonica et Metallogenia,25(1/2):14-36
Kroopnick,P.,Weiss,R.F.,Craig,H.,1972.Total CO2,13C,and Dissolved Oxygen-18O at Geosecs II in the North Atlantic.Earth and Planetary Science Letters,16(1):103-110.https://doi.org/10.1016/0012-821x(72)90242-7
Laznicka,P.,2006.Giant Metallic Deposits:Future Sources of Industrial Metals.Economic Geology,101(7):1445-1446.https://doi.org/10.1007/3-540-33092-5
Leach,D.L.,Bradley,D.C.,Huston,D.,et al.,2010.Sediment-Hosted Lead-Zinc Deposits in Earth History.Economic Geology,105(3):593-625.https://doi.org/10.2113/gsecongeo.105.3.593
Leach,D.L.,Sangster,D.F.,Kelley,K.D.,et al.,2005.Sediment-Hosted Lead-Zinc Deposits:A Global Perspective.Economic Geology,100:561-607
Li,H.,Sun,H.S.,Wu,J.H.,et al.,2017.Re-Os and U-Pb Geochronology of the Shazigou Mo Polymetallic Ore Field,Inner Mongolia:Implications for Permian-Triassic Mineralization at the Northern Margin of the North China Craton.Ore Geology Reviews,83:287-299.https://doi.org/10.1016/j.oregeorev.2016.12.010
Li,H.,Xi,X.S.,2015.Sedimentary Fans:A New Genetic Model for Sedimentary Exhalative Ore Deposits.Ore Geology Reviews,65:375-389.https://doi.org/10.1016/j.oregeorev.2014.10.001
Li,H.,Xi,X.S.,Wu,C.M.,et al.,2013.Genesis of the Zhaokalong Fe-Cu Polymetallic Deposit at Yushu,China:Evidence from Ore Geochemistry and Fluid Inclusions.Acta Geologica Sinica:English Edition,87(2):486-500.https://doi.org/10.1111/1755-6724.12063
Li,K.,Zhao,S.,Tang,Z.,et al.,2018.Fluid Sources and Ore Genesis of the Pb-Zn Deposits of Huayuan Ore-Concentrated District,Northwest Hunan Province,China.Earth Science-Journal of China University of Geosciences,43(7):2449-2464.https://doi.org/10.3799/dqkx.2018.554(in Chinese with English Abstract)
Liu,J.L.,Wang,A.J.,Xia,H.R.,et al.,2010.Cracking Mechanisms during Galena Mineralization in a Sandstone-Hosted Lead-Zinc Ore Deposit:Case Study of the Jinding Giant Sulfide Deposit,Yunnan,SWChina.Mineralium Deposita,45(6):567-582.https://doi.org/10.1007/s00126-010-0294-7
Liu,Y.C.,Hou,Z.Q.,Yang,Z.S.,et al.,2008.Some Insights and Advances in Study of Mississippi Valley-Type(MVT)Lead-Zinc Deposits.Mineral Deposits,27(2):253-264(in Chinese with English Abstract)
Liu,Y.,Zhu,Z.M.,Chen,C.,et al.,2015.Geochemical and Mineralogical Characteristics of Weathered Ore in the Dalucao REE Deposit,Mianning-Dechang REE Belt,Western Sichuan Province,Southwestern China.Ore Geology Reviews,71:437-456.https://doi.org/10.1016/j.oregeorev.2015.06.009
Lu,H.Z.,Fan,H.R.,Ni,P.,et al.,2004.Fluid Inclusions.Science Press,Beijing.488(in Chinese)
Lu,H.Z.,Shan,Q.,2015.Composition of Ore Forming Fluids in Metal Deposits and Fluid Inclusion.Acta Petrologica Sinica,31(4):1108-1116(in Chinese with English Abstract)
Lydon,J.W.,1983.Applications of Computer Modeling to the Study of the Genesis of Stratiform Sulfide Deposits.Journal of the International Association for Mathematical Geology,15(1):231-232
Lydon,J.W.,1996.Sedimentary Exhalative Sulphides(SEDEX).In:Eckstrand,O.R.,Sinclair,W.D.,Thorpe,R.I.,eds.,Geology of Canadian Mineral Deposit Types.Geological Survey of Canada,Ottawa.130-152
Metcalfe,I.,1996.Gondwanaland Dispersion,Asian Accretion and Evolution of Eastern Tethys.Australian Journal of Earth Sciences,43(6):605-623.https://doi.org/10.1080/08120099608728282
Metcalfe,I.,1997.The Palaeo-Tethys and Palaeozoic-Mesozoic Tectonic Evolution of Southeast Asia.In:Dheeradilok,P.,Hinthong,C.,Chaodumrong,P.,et al.,eds.,Stratigraphy and Tectonic Evolution of Southeast Asia and the South Pacific.Department of Mineral Resources,Bangkok,Thailand.19-24
Metcalfe,I.,2002.Permian Tectonic Framework and Palaeogeography of SE Asia.Journal of Asian Earth Sciences,20(6):551-566.https://doi.org/10.1016/s1367-9120(02)00022-6
Miall,A.D.,1984.Principles of Sedimentary Basin Analysis.SpringerVerlag,New York.490
Ohmoto,H.,Goldhaber,M.B.,1997.Sulfur and Carbon Isotopes.In:Barnes,H.L.,ed.,Geochemistry of Hydrothermal Ore Deposits.John Wiley,New York.517-611
Pei,R.F.,Mei,Y.X.,Qu,H.Y.,et al.,2013.New Recognized Intellect for Prospecting Large-Superlarge Mineral Deposits.Mineral Deposits,34(4):661-672(in Chinese with English Abstract)
Reynolds,N.A.,2004.Geology of the Anjing Hitam Resource,Dairi Project,North Sumatra,Indonesia.Herald Resources Ltd.,Sumatra.95
Roedder,E.,1984.Fluid Inclusions.In:Ribbe,P.H.,ed.,Reviews in Mineralogy,Vol.12.Mineralogical Society of America,Washington.644
Russell,M.J.,1983.Major Sediment-Hosted Zinc+Lead Deposits:Formation from Hydrothermal Convection Cells that Deepen during Crustal Extension.In:Sangster,D.F.,ed.,Short Course in Sediment-Hosted Stratiform Lead-Zinc Deposits.Mineralogical Association of Canada,Victoria,Canada.251-282
Rye,R.O.,Ohmoto,H.,1974.Sulfur and Carbon Isotopes and Ore Genesis:A Review.Economic Geology,69(6):826-842.https://doi.org/10.2113/gsecongeo.69.6.826
?eng?r,A.M.C.,1979.Mid-Mesozoic Closure of Permo-Triassic Tethys and Its Implications.Nature,279(5714):590-593.https://doi.org/10.1038/279590a0
?eng?r,A.M.C.,1987.Tectonics of the Tethysides:Orogenic Collage Development in a Collisional Setting.Annual Review of Earth and Planetary Sciences,15(1):213-244.https://doi.org/10.1146/annurev.ea.15.050187.001241
Sheppard,S.M.F.,Nielsen,R.L.,Taylor,H.P.,1971.Hydrogen and Oxygen Isotope Ratios in Minerals from Porphyry Copper Deposits.Economic Geology,66(4):515-542.https://doi.org/10.2113/gsecongeo.66.4.515
Silic,J.,Seed,R.,2001.The Geophysics of the Anjing Hitam Deposit:From Mapping Shales to a Major Discovery.ASEG Extended Abstracts,2001(1):1-4.https://doi.org/10.1071/aseg2001ab132
Sillitoe,R.H.,1978.Metallogenic Evolution of a Collisional Mountain Belt in Pakistan:A Preliminary Analysis.Journal of the Geological Society,135(4):377-387.https://doi.org/10.1144/gsjgs.135.4.0377
St?cklin,J.,1974.Possible Ancient Continental Margins in Iran.In:Burk,C.A.,Drake,C.L.,eds.,The Geology of Continental Margins.SpringerVerlag,Berlin.873-887
Sun,H.S.,Wu,G.B.,Liu,L.,et al.,2011.Research Advances in Metallogenic Tectonic Environment of Massive Sulfide Deposits.Earth Science-Journal of China University of Geosciences,36(2):299-306(in Chinese with English Abstract)
Taylor,H.P.J.,1997.Oxygen and Hydrogen Isotope Relationships in Hydrothermal Mineral Deposits.Geochemistry of Hydrothermal Ore Deposits,2:229-302
Turner,R.J.W.,1992.Formation of Phanerozoic Stratiform SedimentHosted Zinc-Lead Deposits:Evidence for the Critical Role of Ocean Anoxia.Chemical Geology,99(1/2/3):165-188.https://doi.org/10.1016/0009-2541(92)90037-6
Ueno,K.,2003.The Permian Fusulinoidean Faunas of the Sibumasu and Baoshan Blocks:Their Implications for the Paleogeographic and Paleoclimatologic Reconstruction of the Cimmerian Continent.Palaeogeography,Palaeoclimatology,Palaeoecology,193(1):1-24.https://doi.org/10.1016/s0031-0182(02)00708-3
Ulmer,P.,Trommsdorff,V.,1995.Serpentine Stability to Mantle Depths and Subduction-Related Magmatism.Science,268(5212):858-861.https://doi.org/10.1126/science.268.5212.858
Wang,C.M.,Bagas,L.,Lu,Y.J.,et al.,2016.Terrane Boundary and Spatio-Temporal Distribution of Ore Deposits in the Sanjiang Tethyan Orogen:Insights from Zircon Hf-Isotopic Mapping.Earth-Science Reviews,156:39-65.https://doi.org/10.1016/j.earscirev.2016.02.008
Wang,C.M.,Deng,J.,Bagas,L.,et al.,2017.Zircon Hf-Isotopic Mapping for Understanding Crustal Architecture and Metallogenesis in the Eastern Qinling Orogen.Gondwana Research,50:293-310.https://doi.org/10.1016/j.gr.2017.04.008
Wang,C.M.,Deng,J.,Carranza,E.J.M.,et al.,2014.Nature,Diversity and Temporal-Spatial Distributions of Sediment-Hosted Pb-Zn Deposits in China.Ore Geology Reviews,56:327-351.https://doi.org/10.1016/j.oregeorev.2013.06.004
Wang,L.J.,1998.Analysis and Study of the Composition of Fluid Inclusions.Geological Review,44(5):496-501(in Chinese with English Abstract)
Wang,X.,Gao,J.,He,S.,et al.,2017.Fluid Inclusion and Geochemistry Studies of Calcite Veins in Shizhu Synclinorium,Central China:Record of Origin of Fluids and Diagenetic Conditions.Journal of Earth Science,28(2):315-332.https://doi.org/10.1007/s12583-016-0921-7
Wilkinson,J.J.,2014.Sediment-Hosted Zinc-Lead Mineralization:Processes and Perspectives.Treatise on Geochemistry,219-249.https://doi.org/10.1016/B978-0-08-095975-7.01109-8
Wu,J.,Suppe,J.,2018.Proto-South China Sea Plate Tectonics Using Subducted Slab Constraints from Tomography.Journal of Earth Science,29(6):1304-1318.https://doi.org/10.1007/s12583-017-0813-x
Zhang,D.H.,1992.Aqueous Phase Composition Characteristics of Mineral Fluid Inclusions and Its Significance in Ore Genesis.Earth Science-Journal of China University of Geosciences,17(6):59-70(in Chinese with English Abstract)
Zhang,H.R.,Hou,Z.Q.,Yang,Z.M.,2010.Metallogenesis and Geodynamics of Tethyan Metallogenic Domain:A Review.Mineral Deposits,29(1):113-133(in Chinese with English Abstract)
Zheng,Y.F.,2001.Theoretical Modeling of Stable Isotope Systems and Its Application to the Geochemistry of Hydrothermal Ore Deposits.Mineral Deposits,20(1):57-70(in Chinese with English Abstract)
Zhou,Y.,Duan,Q.F.,Cao,L.,et al.,2018.Microthermonmetry and Characteristic Elements Determination of the Fluid Inclusions of the Huayuan Lead-Zinc Deposit in Western Hunan.Earth Science-Journal of China University of Geosciences,43(7):2465-2483.https://doi.org/10.3799/dqkx.2018.520(in Chinese with English Abstract)
Zhu,H.P.,Wang,L.J.,Liu,J.M.,2003.Determination of Quadruple Mass Spectrometer for Gaseous Composition of Fluid Inclusion from Different Mineralization Stages.Acta Petrologica Sinica,19(2):314-318(in Chinese with English Abstract)