Post-Eocene structural evolution of the Qole-Kaftaran and investigate the linkage between structures and Pb-Zn and Cu mineralization, North Toroud fault

Document Type : Original Article

Authors

1 MSc graduated in tectonics, geology department, University of Isfahan, Isfahan, Iran

2 Assistant professor/Department of Geology,, University of Isfahan, Isfahan, Iran.

3 Associated professor, Department of Geology, University of Isfahan, Isfahan, Iran

4 MSc in mining, Power resources development company, Tehran, Iran

Abstract

The vein-type Qole-Kaftaran Pb-Zn and Cu deposit with middle Eocene volcanic host rock, located at the easternmost edge of the Toroud-Chah Shirin metallogenic belt, is chosen to characterize its structural architecture and further investigate the linkage between structures and ore-mineralization. The Qole-Kaftaran deposit is also situated at 20 km north of the active basement Toroud fault zone. To this end, field base structural study is integrated with remote sensing and ICP-OES geochemical analysis is used. Variable strikes of faults and fractures are propagated in the study area while a NE-SW strike as the significant fault trend is identified in the frequency aspect. This kind of propagation of diverse fault strikes can be interpreted as relatively tectonic maturity in the study area. Brittle and ductile derived- Paleo-stress results suggest an old almost vertical maximum compression direction (with possible age of post-Eocene- Early Miocene) and a post-Early Miocene horizontal NW-SE- directed maximum compression direction. Our result also points to the direct controlling impact of brittle structures on the distribution of alteration and Pb-Zn and Cu mineralization. In which, alteration and vein-type Pb-Zn and Cu mineralization are arranged along and at the hanging wall of the NE-SW extensional faults and grabens.

Keywords

Journal of Tectonics
Volume 5, Issue 20
February 2022

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