Lithofacies, tectonic setting and provenance interpretation of Miocene siliciclastic sediments; by petrography and geochemical data in Binalood zone north of Neyshabur

Document Type : مقالات پژوهشی

Authors

• Hosnieh Barakshahi
• Tayebeh Bloky
• Mohammad Hosein Mahmody Gharaie
• Asadollah Mahboobi
• Seyed Reza Moussavi Harami

Ferdowsi University of Mashhad

10.22067/sed.facies.v7i1.9114

Abstract

Miocene silisiclastic sediments in Binalood zone consist of three lithofacies group including gravelly (Gmm, Gcm, Gci, Gh, Gt, Gp), sandy (St, Sm, Sh, Sp, Ss, Sl) and muddy (Fm, Fl). Gravelly lithofacies are generally massive and mainly consist of volcanic and sedimentary lithic in different size. Sandy lithofacies are composed of litharenite and feldespathic volcanicarenite and rock fragments are almost volcanic as well as minor amounts of sedimentary and metamorphic rock fragments. Based on red color, absence of marine fossils, present of unimodal planar and trough cross bedding in a fining upward cycles, lithofacies analysis and architectural elements, these sedimentary rocks deposited in braided river and alluvial fan as well as playa. Based on geochemistry and petrographic data, parent rocks for these sediments, are probably felsic and intermediate igneous rocks with recycled orogen that originate in active continental margin.

Keywords

• lithofacies
• Binalood
• Geochemistry
• tectonic setting

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