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PESD_GSU_20200714_0548_(new): To understand oxygenation of Indian
Mesoproterozoic basins using geochemical proxies of sedimentary records

PESD_GSU_20200714_0548_(new)
1. Project Title:

To understand oxygenation of Indian Mesoproterozoic basins using geochemical proxies of
sedimentary records

2. Name of Proposing Scientists:
Amlan Banerjee
3. Name of Others Scientists associated with their affiliation:
From the Institute:

Prof. Sarbani Patranabis Deb
From Other Institutions:
Dr. Mirosław Słowakiewicz, Faculty of Geology, University of Warsaw, Żwirki i Wigury
93, 02-089 Warszawa, Poland
4. Date of Commencement: 01/04/2021

5.Expected Date of Completion: 31/03/2023
6. Project Summary(Max. 300 words):
Aim of this project is to carry out a multiproxy geochemical investigation of the Proterozoic
sedimentary basins, namely Indravati and Chattishgarh basins of the Bastar craton, India to
understand the oxygenation history of the Meso- to Neoproterozoic time. The oxygenation
history of the Proterozoic Earth is studied indirectly by analyzing the sedimentary strata of
that time that were commonly laid down in extensive shallow seas/oceans. These basins host
undeformed and unmetamorphosed mostly marine sedimentary succession. Field-work will
be carried out in both the basins to collect rock samples for geochemical analysis (carbon and
oxygen isotope, trace element). Collection and analysis of the samples from these two basins
will not only help us better understand the time dependent oxygenation episode of the
Proterozoic oceans but will also provide input in global correlations of geochemical proxies
of this period.
7. Introduction with Background(Max. 300 words):
Sustained oxygenation of Earth’s surface environments began during the Great Oxidation
Event (GOE, 2500-2200 Ma) that oxygenated the shallow oceans along the continental
shelves and margins at depths of a few hundred metres. But the ancient deep oceans (average
depth of the modern ocean is about 3689.30 meters) continued to be anoxic, at least until 1850
Ma (Holland, 2006) and deep-ocean ventilation did not occur until the end of the Proterozoic
(Och and Shields-Zhou, 2012). The atmospheric oxygenation during Proterozoic, were
accompanied with changes in Earth’s biosphere, from the initial appearance of eukaryotes in
the Paleoproterozoic (Rasmussen et al., 2008) to the origin and diversification of animals in
the terminal Neoproterozoic (McFadden et al., 2008). Current understanding of redox
conditions and the oxygen cycle in the Proterozoic oceans and atmosphere is insufficient. To
understand the early oxygenation history of the ocean during Precambrian time, several
geochemical proxies from the ancient Precambrian - Proterozoic basins must be extensively
studied. Geochemical proxies (trace elements and rare earths) of the recently completed work
on the Paleoproterozoic Vempalle dolomites of the Cuddapah Basin India suggested

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