Browsing by Author "Venkateshwarlu, M."
Now showing items 1-10 of 10
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A 50 kyr record of eolian sedimentation in the Eastern Arabian Sea - Dust deposition changes synchronous with the Northern Hemisphere Climatic Oscillations
Sebastian, T.; Nath, B.N.; Mascarenhas-Pereira, M.B.L.; Venkateshwarlu, M.; Mungekar, T.; Rodrigues, D.J.; Suresh, K.; Linsy, P. (Elsevier, 2023)The Late Pleistocene Northern Hemisphere (NH) climate was extremely variable, owing to the abrupt warm Dansgaard-Oeschger (D/O) events and cold Heinrich events in the Greenland and North Atlantic. Although the close coupling ... -
A rock magnetic perspective of gas hydrate occurrences in a high-energy depositional system in the Krishna-Godavari basin, Bay of Bengal
Badesab, F.K.; Dewangan, P.; Gaikwad, V.; Sebastian, J.G.; Venkateshwarlu, M. (Springer, 2020)We conducted a detailed rock magnetic study complemented by sedimentological and mineralogical methods on a 177.2-m-long sediment core of Hole NGHP-01-14A to constrain the influence of high-energy depositional environment ... -
Acquisition of natural remanence in the basaltic laterites of Deccan volcanic province (India): Implications to palaeomagnetic studies in laterites
Kadam, Nitin; Sangode, S.J.; Venkateshwarlu, M.; Meshram, D.C.; Kulkarni, Y.R.; Badesab, F.K.; Singh, Jyotibala; Gudadhe, S.S. (Elsevier, 2023)Lateritization in the Deccan basalt province (India) represents a large spectrum of chemical weathering with up to 99% CIA values and complete ferri- to antiferromagnetic transformations. We combined rock magnetic, ... -
Control of source-to-sink processes on the dispersal, fractionation, and deposition of magnetic minerals in a tropical mesotidal estuarine system
Badesab, F.K.; Kadam, N.; Gullapalli, S.; Dewangan, P.; Gaikwad, V.; Satelkar, N.P.; Khalap, S.; Venkateshwarlu, M.; Sahoo, R.K.; Fernandes, Walsh; Dahake, P.; Banerjee, Deblina (John Wiley & Sons, Ltd, 2023)This study aims to elucidate the control of source-to-sink processes on the sediment dynamics of a complex mesotidal tropical estuarine system using rock magnetic, sedimentological, mineralogical, and geochemical methods. ... -
Controls of contrasting provenance and fractionation on the sediment magnetic records from the Bay of Bengal
Badesab, F.K.; Gaikwad, V.; Nath, B.N.; Venkateshwarlu, M.; Aiswarya, P.V.; Tyagi, A.; Salunke, K.; Fernandes, W.; Kadam, N.; Sangode, S.J.; Sardar, A.A.; Prabhu, G.A. (Elsevier, 2021)We present the results of rock magnetic, granulometric, microscopy and mineralogical analyses of shelf sediments off Krishna, Godavari, and Mahanadi Rivers, Bay of Bengal. The aim of the study was to assess the influence ... -
Diagenetic dissolution, maghemitization and sulphidization of magnetic minerals in rapidly deposited gas hydrate bearing sediments from the Bay of Bengal
Badesab, F.K.; Gaikwad, V.; Venkateshwarlu, M.; Kadam, N.; Joao, H.M. (Elsevier, 2022)We conducted a comprehensive rock magnetic investigation complemented by a scanning electron microscopy analyses on a 148.8 m sediment core (NGHP-01-20A) from the methane-hydrate bearing site in the Bay of Bengal to ... -
Discovery of late Quaternary giant magnetofossils in the Bay of Bengal
Kadam, N.; Badesab, F.K.; Lascu, I.; Wagner, C.L.; Gaikwad, Virsen; Saha, A.; Sangode, S.; Venkateshwarlu, M. (Nature Publishing Group, 2024)Unusually large and enigmatic giant magnetofossils are well-documented in sediments deposited during and surrounding climatic events such as the Paleocene-Eocene Thermal Maximum (~56?Ma) and Middle Eocene Climatic Optimum ... -
Genesis and preservation of authigenic magnetite and greigite in the cold seep sediments, Bay of Bengal
Badesab, F.K.; Gaikwad, V.; Venkateshwarlu, M.; Kadam, N. (Elsevier, 2023)We report a new mechanism of authigenic greigite and magnetite formation and preservation in an anomalous �sulfide-rich� interval in the cold (methane) seep sediments from the Bay of Bengal. Rock magnetic proxies (SIRM/?lf, ... -
Impact of the Indian Summer Monsoon variability on the source area weathering in the Indo-Burman ranges during the last 21-kyr - A sediment record from the Andaman Sea
Sebastian, T.; Nath, B.N.; Venkateshwarlu, M.; Miriyala, P.; Prakash, A.; Linsy, P.; Kocherla, M.; Kazip, A.; Sijinkumar, A.V. (Elsevier, 2019)The paleomonsoonal variations and their impact on the weathering patterns in the source regions of sediments of the Andaman Sea were investigated from a 21-kyr sedimentary record using environmental magnetic, clay mineralogical ... -
Sedimentary response to the contrasting provenance and oceanographic conditions on the continental shelf of India
Kadam, N.; Badesab, F.K.; Gaikwad, V.; Kotha, M.; Fernandes, L.L.; Venkateshwarlu, M. (Elsevier, 2022)The present study sets out to elucidate how magnetic minerals derived from wide array of source regions respond to shelfal sedimentary processes in a complex shelf system.Bulk sediment magnetic mineralogy comprised of ...