秘鲁绿山斑岩铜钼矿床地质特征及成因
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摘要
绿山(Cerro Verde)斑岩铜钼矿床位于秘鲁南部古新世—始新世斑岩铜钼成矿带的北端。矿体赋存于前寒武系Charcani片麻岩、晚白垩世Yarabamba花岗闪长岩、古新世英安斑岩和石英电气石角砾岩中,热液蚀变由中心向外分别为:钾化带—泥化带—石英绢云母化带—青磐岩化带。矿床形成与板块俯冲有关的岛弧环境,受区域性印加普丘断裂控制,在古新世英安斑岩侵位,带来了大量成矿热液,形成了世界级的超大型斑岩铜钼矿床—绿山斑岩铜钼矿床。
The Cerro Verde porphyry copper molybdenum deposit, located near the northern end of the Paleocene Eocene porphyry copper molybdenum belt of southern Peru. Theore body hosted by Precambrian Charcani gneiss, Late Cretaceous Yarabamba granodiorite, Neocene porphyry and the quartz tourmalite breccia, and the hydrothermal alteration is outward from the center are: potassic-argillic-phyllic and propylitic. The deposit formed in plate subduction and is associated with Incapucio fault. The dacite porphyry emplacement in Paleocene and brought out a large amount of mineralizing hydrothermal, as result a world-class super large porphyry Cu-Mo deposit-Cerro Verde is formed.
The Cerro Verde porphyry copper molybdenum deposit, located near the northern end of the Paleocene Eocene porphyry copper molybdenum belt of southern Peru. Theore body hosted by Precambrian Charcani gneiss, Late Cretaceous Yarabamba granodiorite, Neocene porphyry and the quartz tourmalite breccia, and the hydrothermal alteration is outward from the center are: potassic-argillic-phyllic and propylitic. The deposit formed in plate subduction and is associated with Incapucio fault. The dacite porphyry emplacement in Paleocene and brought out a large amount of mineralizing hydrothermal, as result a world-class super large porphyry Cu-Mo deposit-Cerro Verde is formed.
引文
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金文强.2016.秘鲁南部Cercana-Don Jovier斑岩铜矿地质特征及成因探讨[D].长沙:中南大学,7-16.
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朱小三,卢民杰,程文景,宋玉财,张超.2017.安第斯与冈底斯成矿带斑岩铜矿床矿物学和成矿斑岩地球化学特征对比[J].地质通报,36(12):2143-2152.
Beckinsale R D, Sanchez-Fernandez A W, Brook M, Cobbing E J, Taylor W P, Moore N D, 1985.Rb-Sr whole-rock isochron and K-Ar age determinations for the Coastal batholith of Peru//Pitcher W S,Atherton M P, Cobbing E J, Beckinsale R D, eds. Magmatism at a plate edge:The Peruvian Andes:Glasgow, Blackie, John Wiley and Sons, 177-202.
Dilles J H, Einaudi M T, Proffett J M, Barton M D.2000. Overview of the Yerington porphyry copper district:Magmatic to nonmagmatic sources of hydrothermal fluids:Their flow paths and alteration effects on rocks and Cu-Mo-Fe-Au ores[J]. Society of Economic Geologists Guidebook, 32:.55-66.
Freeport-McMoRan. 2018.US Securities and Exchange Commission Form10-K[R].Freeport-McMoRan Ltd, 29-30.
Kihien, A. 1975. Alteraci6n y sus relaci6n con la mineralizaci6nen el p6rfidode cobre de Cerro Verde[J]. Boletin de la Sociedad Geológíca del Perú, 46:103-126.
Le Bel L M.1985. Mineralization in the Arequipa segment:The porphyry-Cu deposit of Cerro Verde/Santa Rosa//[C] Pitcher W S, Atherton M P,Cobbing E J, Beckinsale R D, eds. Magmatism at a plate edge:ThePeruvian Andes:Glasgow, Blackie, John Wiley and Sons,:250-260.
Mukasa S B. 1986. Zircon U-Pb ages of super-units in the coastal batholith,Peru[J]. Geological Society of America Bulletin, 97:241-254.
Quang C X, Clark A H, Lee J K W, Guillen B J. 2003. 40Ar-39Ar ages of hypogene and supergene mineralization in the Cerro Verde-Santa Rosa porphyry Cu-Mo cluster, Arequipa, Peru[J]. Economic Geology, 98:1683-1696.
Shinohara H, Hedenquist J W. 1997. Constraints on magma degassing be-neath the Far Southeast porphyry Cu-Au deposit, Philippines[J].Journal of Petrology, 38:1741-1752.
Sillitoe R H. 1972. A Plate Tectonic Model for the Origin of Porphyry Copper Deposits[J]. Economic Geology,67(2):184-197.
Sillitoe R H.1998. Major regional factors favouring large size, high hypogene grade, elevated gold content and supergene oxidation and enrichment of porphyry copper deposits//[C] Porter T M, ed.Porphyry and hydrothermal copper and gold deposits:A global perspective:Adelaide, Australian Mineral Foundation, 21-34.
金文强.2016.秘鲁南部Cercana-Don Jovier斑岩铜矿地质特征及成因探讨[D].长沙:中南大学,7-16.
元春华,涨潮,等.2017.南美洲地质矿产与矿业开发[M].北京:地质出版社,178-180.
朱小三,卢民杰,程文景,宋玉财,张超.2017.安第斯与冈底斯成矿带斑岩铜矿床矿物学和成矿斑岩地球化学特征对比[J].地质通报,36(12):2143-2152.