Page 50 - BE Book PESD 2021 22
P. 50

Kutch  marks  the  beginning  of  Palaeogene.  During  Early  Eocene,  marine  transgression
                deposited  finer  clastics  and  carbonates  followed  by  Bartonian  carbonate  platforms  that
                correspond to the globally recognised warming period at  Middle Eocene (MECO). Eocene
                of Kutch includes the Naredi Formation with alternations of shale, calcareous mudstone and
                limestone and sandstone; Harudi with grey shale, lignite, interbedded coquina (Ravikant and
                Bajpai 2010) and glauconitic green shale and Fulra with foraminiferal limestones (Saraswati
                et al 2018).

                The Palaeogene sections of Kutch are the reference for the Indian regional chronostratigraphic
                units. The ages of Palaeogene shallow marine carbonates are mainly based on larger benthic
                foraminifera (LBF). These LBF are K-strategists, but  they may even be R strategists, which
                rapidly  increase  in  numbers  when  conditions  are  favourable.  Hence  LBF  of  Kutch  are
                important.


                Eocene of Kutch is also the storehouse of early marine mammals like the whales that are
                thought to be originated in India.


                Geology of Eocene deposits of Kutch as well as the whales and LBFs are well studied.
                However, taphonomy of the larger benthic foraminifera and remingtonocetids will be
                studied in this backdrop for the first time.
                8. Description of the problem(Max. 300 words):

                As stated earlier, an array of geological and paleontological research has enriched the Eocene
                deposits  of  Kutch.  Several  fluctuations  in  the  overall  temperature  and  episodes  of
                transgression had been noticed during the Eocene Epoch of Kutch. Osteology and taxonomy
                of the vertebrates, specially whales have been extensively studied. Taxonomy, biostratigraphy
                and geochemistry of foraminifera and invertebrates have also been carried out. Since it is not
                possible to discuss all the previous literatures within the prescribed word limits, an exhaustive
                list of references has been provided below. However, in what condition and how the whale
                specimens were disintegrated and deposited from their dead carcass is not known. Similarly,
                the extent of breakage and orientations of larger foraminifera in different litho-units is not
                known so far. The effects of diagenesis on the tests are also not specified for different large
                taxa of foraminifera. The productivity of different species of larger benthic foraminifera at
                different litho units is not adequately studied. The taphonomy of coquina beds and sporadic
                gastropods occurring adjacent to the whale fossil fragments are yet to be studied.  The present
                project aims to generate the basic taphonomic data for the whales and some larger benthic
                foraminifera of the Eocene of Kutch. The taphonomic data generated in the project will be
                analysed and matched with the vast amount of existing geologic and paleontologic literature.
                This will hopefully enrich our knowledge on how the fossils were deposited and preserved
                during the Eocene Epoch in Kutch. The project span is three years. Hence, for the tme being,
                foraminiferal data will be taken from few relevant areas and / or sections.
                9. Objectives:
                Objective of the project is to study the taphonomy of the new remingtonocetid (its taxonomy
                as  well)  from  Harudi  Formation  and  taphonomy  of  the  larger  benthic  foraminifera  from
                Harudi itself,  Naredi  below and  Fulra above with reference to  its  host rock  geology  and
                geochemistry, (both from literature and fresh analysis) to add new data to understand the
                Eocene Geology and Paleontology of Kutch.

                10. Study Area:



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