Page 66 - BE Book PESD 2021 22

sedimentary succession of the Chhattisgarh Basin was done earlier by Patranabis Deb et al.
(2016) and later by George et al. (2019) and George and Ray (2020). The geochemical data
on well-defined sedimentary suits of Proterozoic sequence of Indravati basin is very limited.
Recently Maheshwari et al (2005) and Guhey and Kotha (2017) using petrographic and
isotope data and geochemical proxies (selected Trace and REE+Y) tried to understand the
origin and chronostratigraphic implications on Indravati Basin but the paleo redox condition
is still lacking.
11.3 Novelty of the present proposal:
The project will fill in the gap and improve our current understanding of redox conditions
and the oxygen cycle in the Proterozoic oceans is insufficient and the seawater chemistry of
Mesoproterozoic carbonates.
12. Importance of the proposed project in the context of current status:
The field work and multiproxy geochemical and sedimentological investigation of the
Mesoproterozoic Indravati and Chattishgarh sedimentary basins in India will help us to
understand and compare and contrast the paleo oxygenation history of the basins during that
time. The study will also fill in the knowledge gap that will help the scientific community to
better understand the time dependent global oxygenation episode of the Proterozoic oceans
and will provide input in global correlations of geochemical proxies of this period.
13. Review of the expertise available with the group/institute in the subject of the
project:
Research interest of Dr. Sarbani Patranabis Deb and Dr. Mirosław Słowakiewicz are of
overlapping in nature with is project and hence are selected as associated scientists in this
project.

Prof. Sarbani Patranabis Deb concentrates mostly on the sedimentology, stratigraphy and
tectonic evolution of the Purana basins of India, which occupy a large tract of the Palaeo-
through Neo-proterozoic Indian crust. She will contribute towards the sedimentological
aspects of this project.

Dr. Mirosław Słowakiewicz, is an adjunct based in the Institute of Geological Sciences, Polish
Academy of Sciences. He is an organic/petroleum geochemist with specific expertise in
biogeochemistry, palaeoclimate reconstruction, palaeo-oceanography of carbonate-evaporite
systems; previous research has focused on using lipid biomarkers to study carbon cycling,
organic matter, source rocks, and reconstruction of palaeo-oceanographic conditions using
various geochemical proxies. He will contribute towards palaeoclimate reconstruction
aspects of this project.
14. Work Plan:

14.1. Methodology:

1. i) Sample collection for petrological analysis: Samples will be collected at suitable
intervals up-section and thin-sections will be made from the selected samples for
petrographic analysis. We intend to collect samples (n >100) such that the results are
statistically significant. We will take several preplanned traverses such that it covers
the entire basin and along the traverse path samples will be collected with sample
number and the GPS location. The samples will be collected from several localities of
the study area Carbonate components (calcite, dolomite) will also be determined by
staining the thin-sections with Alizarin Red S.

<< 60