Journal ArticleDOI
Lead isotope data from the Sar-Cheshmeh porphyry copper deposit, Iran
J. Shahabpour,J. D. Kramers +1 more
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TLDR
Lead isotope compositions of nine sulfide concentrates from ore samples from the Sar-Cheshmeh deposit are reported in this article, where the fluid responsible for the potassic alteration and the associated mineralization was essentially magmatic, whereas convecting meteoric water from the country rock acted as a mineralizing solution during phyllic alteration.Abstract:
Lead isotope compositions of nine sulfide concentrates from ore samples from the Sar-Cheshmeh deposit are reported. They range from virtually unaltered granodiorite through varying degrees of potassic alteration to ores showing strong phyllic alteration (sericite veins). The samples without strong phyllic alteration have fairly uniform lead isotope compositions around 206Pb/204Pb=18.6, 207Pb/204Pb=15.6, and 208Pb/204Pb=38.7. Two samples with sericite veins have markedly more radiogenic lead. It is concluded that the fluid responsible for the potassic alteration and the associated mineralization was essentially magmatic, whereas convecting meteoric water from the country rock acted as a mineralizing solution during phyllic alteration. In the context of the plumbotectonics model, the deposit has a typical orogen signature intermediate between primitive and mature island-arc settings.read more
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Recycling of orogenic arc crust triggers porphyry Cu mineralization in Kerman Cenozoic arc rocks, southeastern Iran
TL;DR: In this paper, the Kerman arc segment in central Iran lacks porphyry Cu mineralization and ore deposits, whereas collisional middle-late Miocene adakite-like porphyritic granodiorites without volcanic equivalents host some of the world's largest Cu ore deposits.
Journal ArticleDOI
A review of the Cu–Ni sulphide deposits in the Chinese Tianshan and Altay orogens (Xinjiang Autonomous Region, NW China): Principal characteristics and ore-forming processes
Jing Wen Mao,Franco Pirajno,Zuo Heng Zhang,Feng Mei Chai,Hua Wu,Shi Ping Chen,Lin Song Cheng,Jian Min Yang,Chang Qing Zhang +8 more
TL;DR: In this article, the authors used the SHRIMP zircon U-Pb method to date the tectonic and geochronological constraints of the tianshan and Altay orogenic belts of Xinjiang Province, NW China.
Journal ArticleDOI
Porphyry Cu (–Mo–Au) deposits related to melting of thickened mafic lower crust: Examples from the eastern Tethyan metallogenic domain
TL;DR: Most porphyry Cu deposits in the world occur in magmatic arc settings and are formed in association with calc-alkaline arc magmas related to subduction of oceanic lithosphere as discussed by the authors.
Journal ArticleDOI
Tectonic evolution of the orogenic belt in the region located between Kerman and Neyriz
TL;DR: In this paper, the authors explored the evolution of the orogenic belt in the region located between Kerman and Neyriz and explored the role of two NE-dipping Neotethyan subduction zones.
Journal ArticleDOI
Petrology and geochemistry of the granitoid complex of Boroujerd, Sanandaj-Sirjan Zone, Western Iran
TL;DR: The Middle Jurassic Boroujerd Granitoid Complex of the Sanandaj-Sirjan Zone (with a U-Pb zircon age of 169-172 ǫ) was emplaced in an active continental margin setting as mentioned in this paper.
References
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Journal ArticleDOI
Magmatic vapor plumes and ground-water interaction in porphyry copper emplacement
R. W. Henley,A. McNabb +1 more
TL;DR: In this paper, a fluid dynamic model for porphyry copper emplacement is proposed, focusing on the interaction of a buoyant low-salinity magmatic vapor plume with surrounding ground water.
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The Sar Cheshmeh porphyry copper deposit
G. C. Waterman,R. L. Hamilton +1 more
TL;DR: The Sar Cheshmeh porphyry copper, located in southern Iran, was mined in ancient times, "rediscovered" about 1966, explored during 1966-1969, and will be in full production in 1977 at a rate of 40,000 tons of ore per day as discussed by the authors.
Journal ArticleDOI
Alkaline character of Eocene volcanism in the middle part of central Iran and its geodynamic situation
TL;DR: Alkaline volcanic rocks, sometimes feldspathoid bearing, appear in variable stratigraphic positions within the Eocene of the middle part of Central Iran No magmatic zonation and no K2O enrichment in both time and space can be found in this volcanic sequence.
Journal ArticleDOI
The copper deposits and geotectonic setting of the Thethyan Eurasian Metallogenic Belt
TL;DR: In this paper, the relationship between porphyry copper and massive-sulfide copper deposits and their geotectonic environments in the Tethyan Eurasian Metallogenic Belt is investigated.
Journal ArticleDOI
Mesozoic–Cenozoic metallogenesis in Iran
TL;DR: A short description of the regional geology of Iran is followed by new data concerning grade of metamorphism, palaeomagnetism, continental drift and radiometric age determinations.