Provenance of Jurassic siliciclastic deposits, determined by geochemistry and petrology: a case study from a Cimmerian intramontane basin, the Binalud Mountains, Iran
Poursoltani MR, Fürsich F (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 13
Article Number: 650
Journal Issue: 14
DOI: 10.1007/s12517-020-05512-6
Abstract
The Jurassic Bazeh-Howz Formation is a succession of braided river siliciclastics deposited in an intramontane basin. Three major types of facies, conglomerate, sandstone and shale, have been identified. Conglomerates are mainly monomict and polymict orthoconglomerates. The sandstones are quartzarenites, sublitharenites, feldspathic litharenites and phyllarenites. Fine-grained deposits represent more than 65% of the strata, and commonly alternate rhythmically with siltstone and very fine-grained sandstone. Bulk rock geochemistry suggests felsic, mafic and ophiolite rocks as well as Proterozoic recycled sandstones as the source of the Bazeh-Howz sediments. According to petrographic data, the main tectonic origins of the studied sediments are a recycled orogen, passive margin, magmatic arc basin, rifted continental margin and even a subduction zone. Trace element ratios such as Th-Sc-Zr/10 indicate that the sediments of the Bazeh-Howz Formation are mainly derived from a continental island arc. Also, the La-Th-Sc trace element ratio indicates a continental island-arc origin of the sandstones and shales. The rocks formed in the context of the Early Cimmerian collision in northeastern Iran became part of the rising Cimmerian mountain belt.
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Iran, Islamic Republic of (IR)How to cite
APA:
Poursoltani, M.R., & Fürsich, F. (2020). Provenance of Jurassic siliciclastic deposits, determined by geochemistry and petrology: a case study from a Cimmerian intramontane basin, the Binalud Mountains, Iran. Arabian Journal of Geosciences, 13(14). https://doi.org/10.1007/s12517-020-05512-6
MLA:
Poursoltani, Mehdi Reza, and Franz Fürsich. "Provenance of Jurassic siliciclastic deposits, determined by geochemistry and petrology: a case study from a Cimmerian intramontane basin, the Binalud Mountains, Iran." Arabian Journal of Geosciences 13.14 (2020).
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