Paleoclimatic analysis of Quaternary sediments associated with the floodplain deposits of a tropical estuary along the southwestern cost of India

• Autorzy: Murali Divya , Reghunath Rajesh , Prakash Pranav , Bhushan Ravi , Krishnan K. Anoop , Baby Sruthy Rose

Identyfikatory

DOI

10.24425/sq.2023.148038

• Języki publikacji: EN

Abstrakty

EN

The coastal regions of southwest India which falls in the tropical regime, have witnessed many transgression-regression events and climatic extremes in the Quaternary Period. A core, 15 m long, was recovered from the floodplains associated with a typical backwater body (lake) in the southwestern coast of India. The granulometric analysis proved dominance of sand and silt fractions and extremely high energy conditions over the entire core. The TOC/TN ratio indicated a domination of the C4-type over the C3-type plants in the lower half of the core, suggesting a warm climate. The C3-type plants prevail in the upper part of the core, thus reflecting cool and wet environments. Extremely low values of TOC/TN ratio (0.33% to 10%) of the core indicate short periods of very high rainfall events and the rapid influx of nutrients to the basin and the eutrophication of the basin. The presence of slightly brackish, brackish/marine and marine benthic foraminifers at 12.5–9 m depth indicates episodes of transgression and regression. The derived AMS radiocarbon dates suggest the Marine Isotope Stage 3 for the lower part of the core.

Słowa kluczowe

EN

foraminiferaq; quaternary environment; TOC/TN ratio; radiocarbon dates; manuscript received

• Wydawca: Institute of Geological Science Polish Academy of Science
• Czasopismo: Studia Quaternaria
• Rocznik: 2024
• Tom: Vol. 41, Nr 1
• Strony: 13--21
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Murali Divya

• Department of Geology, University of Kerala, Karyavattom Campus, Trivandrum, Kerala-695581, India

autor

Reghunath Rajesh

• Department of Geology, University of Kerala, Karyavattom Campus, Trivandrum, Kerala-695581, India

autor

Prakash Pranav

• Department of Geology, University of Kerala, Karyavattom Campus, Trivandrum, Kerala-695581, India

autor

Bhushan Ravi

• Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, Gujarat, India

autor

Krishnan K. Anoop

• Biogeochemistry Group, National Centre for Earth Science Studies, Akkulam, Trivandrum, Kerala, India

autor

Baby Sruthy Rose

• Department of Geology, University of Kerala, Karyavattom Campus, Trivandrum, Kerala-695581, India

Bibliografia

• Banerji, U.S., Shaji, J., Arulbalaji, P., Maya, K., Mohan, S.V., Dabhi, A.J., Padmalal, D., 2021. Mid-late Holocene evolutionary history and climate reconstruction of Vellayani lake, south India. Quaternary International 599, 72–94.
• Behling, H., 2003. Late glacial and Holocene vegetation, climate and fire history inferred from Lagoa Nova in the southeastern Brazilian lowland. Vegetation History and Archaeobotany 12, 263–270.
• Bhushan, R., Yadava, M.G., Shah, M.S., Raj, H., 2019a. Performance of 1 MV AMS Facility (AURIS) at PRL, Ahmedabad. Nuclear Instruments of Methods in Physics Research: Section B – Beam Interactions with Materials and Atoms 439, 76–79.
• Bhushan, R., Yadava, M.G., Shah, M.S., Banerji, U.S., Raj, H., Shah, C., Dabhi, A.J., 2019b. First results from PRL Accelerator Mass Spectrometer. Current Science 116, 361–363.
• Bradley, R.S., 2008. Holocene perspectives on future climate change. Natural climate variability and global warming: A Holocene perspective, 254–268.
• Brasier, M.D., 1980 Microfossils. Allen and Unwin (London), 193 pp.
• Bruckner, H., 1989. Late quaternary shorelines. In: Scott, D.B., Pirazzoli, P.A., Honig, C.A. (Eds), Late Quaternary Sea Level Correlations and Applications. Kluwer Academic Publications, New York, 169–194.
• Cushman, J.A., 1948. Foraminifera, Their Classification and Economic Use. Cambridge, Harvard University Press, 4th. ed., 605 pp.
• Flemming, B.W., 2000 A revised textural classification of gravel-free muddy sediments on the basis of ternary diagrams. Continental shelf research 20, 1125–1137
• Galehouse, J.S., 1971. Sedimentation analysis. Procedures in sedimentary petrology, 69–94.
• Ingram, R.L., 1971. Sieve analysis. Procedures in sedimentary petrology, 49–67.
• Meyers, P.A., 1994 Preservation of elemental and isotopic source identification of sedimentary organic matter. Chemical Geology 114, 289–302.
• Murray, J.W., 1973. Distribution and ecology of living benthic foraminiferids. New York, 274 pp.
• Nair, K.K., 2007. Quaternary Geology and Geomorphology of the Coastal Plains of Kerala. Geological Survey of India, Special publications, 73 .
• Nair, K.M., Sajikumar, S., Padmalal, D., 1998. Silting up of a Holocene mega lagoon along Kerala coast. In: National Seminar on Coastal Evolution, Process and Products Abstract 12.
• Nair, K.M., Padmalal, D., Kumaran, K.P.N., 2006. Quaternary geology of South Kerala sedimentary basin – an outline. Journal of Geological Society of India 67, 165–179.
• Nair, K.M., Padmalal, D., Kumaran, K.P.N., Sreeja, R., Limaye, R.B., Srinivas, R., 2010. Late Quaternary evolution of Ashtamudi, Sasthamkotta lake systems of Kerala, south west India. Journal of Asian Earth Sciences 37, 361–372.
• Nicholson, S.E., Flohn, H., 1980. African environmental and climatic changes and the general atmospheric circulation in late Pleistocene and Holocene. Climatic change 2(4), 313–348.
• Padmalal, D., Kumaran, K.P.N., Nair, K.M., Limaye, R.B., Mohan, S.V., Baijulal, B., Anooja, S., 2014. Consequences of sea level and climate changes on the morphodynamics of a tropical coastal lagoon during Holocene: An evolutionary model. Quaternary International 333, 156–172.
• Pejrup, M., 1988. The triangular diagram used for classification of estuarine sediments: a new approach. Tide-influenced sedimentary environments and facies. Reidel, Dordrecht, 289–300.
• Tiju, V.I., Prakash, T.N., Nair, L.S., Sreenivasulu, G., Nagendra, R., 2021. Reconstruction of the paleoenvironment of the late Quaternary sediments of the Kerala coast, SW India. Journal of Asian Earth Sciences 222, 104952, https://doi.org/10.1016/j.jseaes.2021.104952
• Tyson, R.V., 1995. Sedimentary Organic Matter: Organic Facies and Palynofacies. Chapman and Hall, London, 615 pp.
• Veena, M.P., Achyuthan, H., Eastoe, C., Farooqui, A., 2014. A multiproxy reconstruction of monsoon variability in the late Holocene, south India. Quaternary International 325, 63–73.
• Waelbroeck, C., Labeyrie, L., Michel, E., Duplessy, J.C., Mcmanus, J.F., Lambeck, K., Labracherie, M., 2002. Sea-level and deep water temperature changes derived from benthic foraminifera isotopic records. Quaternary Science Reviews 21, 295–305.
• Weiss, T.L., Linsley, B.K., Gordon, A.L., Rosenthal, Y., Dannenmann-Di Palma, S., 2022. Constraints on marine isotope stage 3 and 5 sea level from the flooding history of the Karimata Strait in Indonesia. Paleoceanography and Paleoclimatology 37, e2021PA004361, https://doi.org/10.1029/2021PA004361