Analysis of the Pivehjan-Dizbad mineralization in the context of tectonic history of the Binalud Mountain

Articles in Press

Document Type : Original Article

Authors

1 Department of Geology- College of Science- University of Sistan and Baluchestan- Zahedan- Iran

2 1- Department of Geology, college of science, University of Sistan and Baluchestan, Zahedan, Iran

3 2- Kavosh Kaneh Co. Zahedan

10.22077/jt.2024.7560.1177

Abstract

The Binaloud mountain ranges is located in the northeastern margin of central Iran. The main body of these mountains is formed by siliciclastic rocks. These rocks seem to have been deposited in a deep-sea basin with turbiditic facies, which have gradually transgressed into the coal-bearing, lacustrine-littoral-alluvium facies during the transformation of the deep oceanic basin into a shallow foreland basin during the northward subduction. The metamorphic event seems to have occurred at the time of the closure of the aforementioned basin in northern Iran, when the active margin of the Paleo-Tethys was compressed. Platform sedimentary rocks belonging to this passive margin were later moved to the south in the form of thrust sheets. With the extension of the Sabzevar-Caspian back-arc basins, Binalud, which was already connected to Eurasia, was separated from the Cimmerian. Neogene tectonic events developed younger faults in this basin. Pivehjan-Dizbad mineralization is actually a collection of mainly two parts. The First part includes the stratiform deposits along with submarine Paleozoic basalt eruptions and the second one includes supergene deposits mainly contain Fe, Cu and Au developed along the foliation or fault planes of the Cimmerian event or younger, spreading over a south of Binalud. Fluids containing leached metals from greater depths in the north have ascended through the fault channels into the south undergone differentiation. In the following, the faults related to the young deformation event have cut and scattered the mineralization zones. Therefore, the example of the Pivejan-Dizbad deposit is a case of two-stage mineralization event.

Keywords

Journal of Tectonics

Articles in Press, Accepted Manuscript
Available Online from 07 October 2024

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