| Geochemistry of Carboniferous Sandstones (Sardar Formation), East-Central Iran: Implication for Provenance and Tectonic Setting |
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| 作者姓名： | Mohammad KHANEHBAD Reza MOUSSAVI-HARAMI Asadollah MAHBOUBI Mehdi NADJAFI and Mohammad Hosein MAHMUDY GHARAIE |
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| 作者单位： | Department of Geology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran |
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| 基金项目： | This study was supported by a grant to the senior author from Faculty of Sciences, Ferdowsi University of Mashhad. We also thank the Geology Department of Ferdowsi University of Mashhad for their logistic support during this study. |
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| 摘 要： | Geochemical analysis of sandstones from the Sardar Formation (from two stratigraphic successions) in east-central Iran were used for identification of geochemical characterization of sandstones, provenance and tectonic setting. Sandstones in the two lithostratigraphic successions have similar chemical compositions suggesting a common provenance. Bulk-rock geochemistry analysis of Carboniferous sandstones from Sardar Formation indicates that they are mainly quartz dominated and are classified as quartzarenites, sublitharenites and subarkoses, derived from acid igneous to intermediate igneous rocks. Discrimination function analysis indicates that the sandstones of Sardar Formation were derived from quartzose sedimentary provenance in a recycled orogenic setting. Also, major and trace elements in sandstones of Sardar Formation (e.g., K2O/Na2O vs. SiO2) indicate deposition in a stable passive continental margin (PM). Chemical index of alteration (CIA) for these rocks (> 65%) suggests a moderate to relatively high degree of weathering in the source area.
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| 关 键 词： | provenance Carboniferous tectonic setting geochemistry Sardar Formation Iran |
| 收稿时间： | 2011/10/8 0:00:00 |
| 修稿时间： | 2012/4/19 0:00:00 |
Geochemistry of Carboniferous Sandstones (Sardar Formation), East‐Central Iran: Implication for Provenance and Tectonic Setting |
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| Authors: | Mohammad KHANEHBAD Reza MOUSSAVI‐HARAMI Asadollah MAHBOUBI Mehdi NADJAFI Mohammad Hosein MAHMUDY GHARAIE |
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| Institution: | Department of Geology, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran |
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| Abstract: | Geochemical analysis of sandstones from the Sardar Formation (from two stratigraphic successions) in east‐central Iran were used for identification of geochemical characterization of sandstones, provenance and tectonic setting. Sandstones in the two lithostratigraphic successions have similar chemical compositions suggesting a common provenance. Bulk‐rock geochemistry analysis of Carboniferous sandstones from Sardar Formation indicates that they are mainly quartz dominated and are classified as quartzarenites, sublitharenites and subarkoses, derived from acid igneous to intermediate igneous rocks. Discrimination function analysis indicates that the sandstones of Sardar Formation were derived from quartzose sedimentary provenance in a recycled orogenic setting. Also, major and trace elements in sandstones of Sardar Formation (e.g., K2O/Na2O vs. SiO2) indicate deposition in a stable passive continental margin (PM). Chemical index of alteration (CIA) for these rocks (> 65%) suggests a moderate to relatively high degree of weathering in the source area. |
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| Keywords: | provenance Carboniferous tectonic setting geochemistry Sardar Formation Iran |
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