Journal ArticleDOI
Geochemical and stable isotope signatures of Proterozoic stromatolitic carbonates from the Vempalle and Tadpatri Formations, Cuddapah Supergroup, India: Implications on paleoenvironment and depositional conditions
Arubam C. Khelen,C. Manikyamba,Sohini Ganguly,Th. Dhanakumar Singh,K.S.V. Subramanyam,S. Masood Ahmad,M. Ramakrishna Reddy +6 more
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TLDR
The Tadpatri stromatolites have reported both positive and negative δ13C ranging from −0.24 to 2.00 as discussed by the authors, which is a deviation from the popular belief of the boring billion concept of displaying Midproterozoic δ 13C stasis.About:
This article is published in Precambrian Research.The article was published on 2017-09-01. It has received 21 citations till now. The article focuses on the topics: Proterozoic.read more
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Constraints on Paleoproterozoic atmospheric oxygen levels
Eric J. Bellefroid,Ashleigh v.S. Hood,Paul Hoffman,Matthew D. Thomas,Christopher T. Reinhard,Christopher T. Reinhard,Noah J. Planavsky,Noah J. Planavsky +7 more
TL;DR: This work provides another crucial line of empirical evidence that atmospheric oxygen levels returned to low concentrations following the Lomagundi Event, and remained low enough for large portions of the Proterozoic to have impacted the ecology of the earliest complex organisms.
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What do Ce anomalies in marine carbonates really mean? A perspective from leaching experiments
TL;DR: In this article, the authors systematically investigated the efficiency of using ammonium acetate buffer pre-treatment to remove exchangeable ions prior to dissolution and found that ammoniumacetate of 1 mM with a pH slightly 75% CaCO3 was the main substrate used to reconstruct rare earth signal in paleo-oceans with the underlying assumption that REY incorporated into carbonate minerals preserve the authigenic seawater signal.
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Geochemistry of the Palaeo–Mesoproterozoic Tadpatri shales, Cuddapah basin, India: implications on provenance, paleoweathering and paleoredox conditions
TL;DR: The Tadpatri shales are mainly deposited in an oxic condition as discussed by the authors, which indicates that they are likely to be derived from a felsic source rock, and they are used to study the provenance, paleoweathering and paleoredox conditions of this TadPatri formation in order to better understand the development of the Cuddapah basin during Palaeo-Mesoproterozoic time.
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Cuddapah Basin, India: A Collage of Proterozoic Subbasins and Terranes
Vivek S. Kale,Dilip Saha,Sarbani Patrabnis-Deb,V. V. Sesha Sai,Vikash Tripathy,Shilpa Patil-Pillai +5 more
TL;DR: Cuddapah Basin, India: A Collage of Proterozoic Subbasins and Terranes VIVEK S KALE*, DILIP SAHA, SARBANI PATRABNIS-DEB, V V SESHA SAI, VIKASH TRIPATHY and SHILPA PATIL-PILLAI Advanced Center for Water Resources Development and Management (ACWADAM), Pune 411 052, India Geological Studies Unit, Indian Statistical Institute, Kolkata 700 108 as discussed by the authors, India Geological Survey of India, Central
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A Palaeoproterozoic dolomite (Vempalle Formation, Cuddapah Basin, India) showing Phanerozoic-type dolomitisation
Amlan Banerjee,Mirosław Słowakiewicz,Mirosław Słowakiewicz,Tuasha Majumder,Sayani Khan,Sarbani Patranabis-Deb,Maurice E. Tucker,Dilip Saha +7 more
TL;DR: The Palaeoproterozoic Vempalle Formation of the Cuddapah Basin, India as discussed by the authors has been used to study the evolution of marine carbonate systems and the redox state of the Earth's early oceans.
References
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Chemical and isotopic systematics of oceanic basalt : implications for mantle composition and processes
TL;DR: In this article, trace-element data for mid-ocean ridge basalts and ocean island basalts are used to formulate chemical systematics for oceanic basalts, interpreted in terms of partial-melting conditions, variations in residual mineralogy, involvement of subducted sediment, recycling of oceanic lithosphere and processes within the low velocity zone.
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Chemical and isotopic systematics of oceanic basalts. Implications for Mantle Composition and Processes
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Sequential extraction procedure for the speciation of particulate trace metals
TL;DR: In this paper, an analytical procedure involving sequential chemicai extractions was developed for the partitioning of particulate trace metals (Cd, Co, Cu, Ni, Pb, Zn, Fe, and Mn) into five fractions: exchangeable, bound to carbonates, binding to Fe-Mn oxides and bound to organic matter.
Book
Stable isotope geochemistry
TL;DR: Theoretical and Experimental Principles of Isotope Fractionation Processes of Selected Elements as discussed by the authors, Variations of Stable isotope Ratios in Nature, and Variant Isotopes Ratio in Nature.
Book
Principles of isotope geology
TL;DR: The roots of isotope geology can be found in this paper, where a geology of Neodymium and Strontium in meteorites and Igneous rocks is described.