Petrography, geochemistry, and tectonic setting of intrusive bodies of the Seridune deposit, northeast of Sarcheshmeh mine, Kerman province, with an emphasis on Seridune porphyry intrusive body

Document Type : Original Article

Authors

1 Dept of Geology, College of Sciences, Shahid Bahonar University of Kerman

2 کرمان - انتهای بلوار 22 بهمن - دانشگاه شهید باهنر کرمان - دانشکده علوم - بخش زمین‌شناسی

3 Dept Of Geology, College Of Sciences, Shahid Bahonar University Of Kerman

4 Shahid Bahonar University of Kerman

5 Geology and Drainage Department, Sarcheshmeh copper complex, National Iranian Copper Industries Company

10.22108/ijp.2024.141595.1334

Abstract

The Seridune copper porphyry deposit, located in the northeast of the Sarcheshmeh mine, is situated geologically in the southeastern part of the Urumieh-Dokhtar magmatic arc (UDMA), the central region of the Dehaj-Sarduieh volcanic-plutonic belt, and the Kerman porphyry copper belt (KPCB). The intrusive bodies of this deposit include granodiorite, quartz monzonite, and monzonite, which were intruded into the Eocene volcanic rocks. The Seridune porphyry intrusive body, which is responsible for mineralization in this area, exhibits a compositional range from granodiorite porphyry to quartz monzonite porphyry. The aim of this research is to study the petrography, geochemistry, and tectonic setting of intrusive bodies in the Seridune area, with a special emphasis on the Seridune porphyry intrusive body. Geochemical investigations indicate the calc-alkaline nature of these intrusive bodies. The primitive mantle-normalized spider diagram reveals enrichment of Ba and Rb elements, negative anomalies in Nb, P, and Ti elements, and positive Sr anomalies. The negative Ti and Nb anomalies can be due to the magmatic activity related to the subduction processes, depletion of these elements in the source, and crustal involvement in the magmatic processes. Based on the regional geological context, the formation of these rocks must be related to the subduction of the Neo-Tethys oceanic lithosphere beneath the Central Iranian Micro-continent. The magma forming these bodies was likely generated through partial melting of the lower crust, while the upper crust has played a significant role in contaminating the magma at shallower levels during its emplacement.

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Petrological Journal

Articles in Press, Accepted Manuscript
Available Online from 06 August 2024

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History

  • Receive Date: 27 May 2024
  • Revise Date: 17 July 2024
  • Accept Date: 06 August 2024

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