Geochemical study of the Neoproterozoic clastic sedimentary rocks of the Khambal Formation (Sindreth Basin), Aravalli Craton,NW Indian Shield: Implications for paleoweathering,provenance, and geodynamic evolution |
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| Institution: | 1. CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad, 500007, India;2. Department of Geology, Aligarh Muslim University, Aligarh, 202001, India;1. Consejo Nacional de Investigaciones Científicas y Técnicas – Museo de Mineralogía y Geología “Dr. A. Stelzner”, FCEFyN-Universidad Nacional de Córdoba, V. Sarsfield 249, X5000JJC, Córdoba, Argentina;2. Dirección Provincial de Vialidad, Los Pozos 2850, Córdoba, Argentina;1. Institute of Earth Sciences, The Hebrew University of Jerusalem, Givat-Ram, Jerusalem 91904, Israel;2. Geological Survey of Israel, Jerusalem 95501, Israel;1. School of Earth Sciences, State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, Hubei, China;2. Xinjiang Research Center for Mineral Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;3. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;4. Geology and Geochemistry Group, Department of Earth Sciences, VU Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands;1. Centre of Advanced Study in Geology, Panjab University, Chandigarh 160 014, India;2. J.W. Goethe Universität, Institut für Geowissenschafte, Facheinheit Mineralogie, Altenhöferallee 1, D-60438 Frankfurt am Main, Germany;3. KIT - Karlsruher Institut für Technologie, Campus Süd, Institut für Angewandte Geowissenschaften, Mineralogie und Petrologie, Adenauerring 20b, Geb. 50.4, D-76131 Karlsruhe, Germany;4. Frankfurt Isotope and Element Research Center (FIERCE), Goethe-University Frankfurt, D-60438 Frankfurt am Main, Germany;1. Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;2. Department of Earth Sciences, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, the Netherlands |
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| Abstract: | Petrographic and geochemical studies characterize lithologies of the Khambal Formation deposited in the Sindreth Basin as arkosic, subarkosic, and quartzarenite. Weathering indices, such as CIA and CIW in conjunction with the ACNK diagram, prescribe mostly moderate chemical weathering with intermittent pulses of extreme weathering in the source area. The discrimination diagrams suggest that these Neoproterozoic clastics were deposited in an active rift basin. Provenance indicators of the detritus components point to a terrane possessing subordinate mafic material in conjunction with large felsic components. A comparison of immobile element ratios with probable source rocks suggest that the Mesoproterozoic Delhi arc situated to the east of the Sindreth Basin could be the possible source. Our mixing calculation defines the proportion of end member components in the Delhi arc. Geodynamic considerations relate the origin of the Sindreth Basin to the processes of disintegration and reassembly of supercontinents. |
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| Keywords: | Petrochemistry Provenance Paleoweathering Tectonic setting Khambal Formation Aravalli Craton India |
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