@article{828815dc57f445f691cd728c108116d8,
title = "Paleoarchean surface processes and volcanism: Insights from the eastern Iron Ore Group, Singhbhum craton, India",
abstract = "The Singhbhum craton of eastern India contains an almost continuous depositional record from the Paleoarchean to the Neoproterozoic. Although researchers have examined the Mesoarchean to Neoproterozoic geological history in the last decade, the Paleoarchean sedimentological inventory is poor and the crust-mantle interaction is poorly constrained. Here we present new sedimentological data from the Paleoarchean-early Mesoarchean eastern Iron Ore Group (EIOG) from the Singhbhum craton, India and critically synthesize the earlier published data to constrain the depositional setting of the EIOG succession. Two distinct facies associations characterize the EIOG succession: while the lower facies association is marine and indicates initial shallowing and subsequent deepening of the sea level, the upper facies association is terrestrial (alluvial fan-fluvial) with an unconformable lower contact. The upper facies association formed because of continental emersion at around 3300 Ma. The ultramafic (komatiite)-mafic (minor felsic) volcanic rocks indicate mantle plume activity and crustal contamination. Carbon isotopic analysis of the carbonaceous matter (CM) preserved within the lower facies association reveals that these are syngenetic with the host rock without any evidence of migration of bitumen and modern organic contamination. A peak metamorphic temperature around 450 ± 50 °C is inferred from Raman spectroscopic analysis of the CM. Intensive paleobiological research is of paramount interest to decode the co-evolution of life and environment and the mysteries of early Earth.",
keywords = "Early Earth surface processes, Eastern Iron Ore Group, Paleoarchean, Sedimentation, Singhbhum craton, Volcanism",
author = "Rajat Mazumder and Trisrota Chaudhuri and Shuvabrata De and Wilfried Bauer and {Al Hadi}, Muzna and Kenichiro Sugitani and {van Zuilen}, {Mark A.} and Ryoko Senda and Mariko Yamamoto and Raju, {P. V.Sunder} and Tohru Ohta and Octavian Catuneanu and Sreejoni Mazumder and Satoshi Saito and Kazuya Shimooka",
note = "Funding Information: The authors are grateful to two anonymous reviewers and editors Yildirim Dilek, Makoto Arima, and Douwe van Hinsbergen for their constructive comments on earlier versions of this paper. RM is grateful to Professor Tapas Bhattacharyya, and late Dr. Subhasish Sengupta for providing him an opportunity to participate in a field training program in the Kherna-Rairangpur area of the EIOG belt in 1990. He is grateful to the Indian Statistical Institute for financial support (plan budget 2010-2011) for providing opportunity to conduct field work in Jharkhand-Odisha on the Iron Ore Group of rocks. Geochemical studies have been conducted at Nagoya University and Kyushu University. Raman spectroscopy has been conducted at IPGP, France. Petrographic studies have been undertaken at Indian Statistical Institute, German University of Technology (GUtech) in Oman, and Ehime University. Miss Wafa Al Ojaili and Miss Tahani Salim Al Badawi of GUtech helped in laboratory work. RM, WB, and MH acknowledge The Research Council (TRC) of Oman sponsored research project TRC BF 2018 and 2020 for providing necessary financial support to complete this work. RM also acknowledges GUtech seed fund for partial financial support. This paper is dedicated to late Professor A.K. Saha and late Dr. Subhasish Sengupta for their pioneering work on Singhbhum geology. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",
year = "2022",
month = sep,
doi = "10.1016/j.earscirev.2022.104122",
language = "English",
volume = "232",
journal = "Earth-Science Reviews",
issn = "0012-8252",
publisher = "Elsevier",
}