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Fluvial Archives of North and Northwestern India as Recorders of Climatic Signatures in the Late Quaternary: Review and Assessment


Affiliations
1 Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur 208 016, India
2 Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gandhinagar 382 355, India
3 Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal 460 662, India
 

The Indian sub-continent is characterized by extremely variable climatic regimes at present, and this strong climatic diversity is also reflected during late Quaternary and Holocene time scales. Fluvial archives across different morpho-climatic zones of India record variable response to monsoonal fluctuations through time as preserved in patterns of sedimentary sequences and characteristic facies. This study has compiled the fluvial records from north and northwestern India to synthesize the palaeoclimatic information available from this broad region and to assess the coherence or otherwise of these records across widely different morpho-climatic regimes. Rivers across different regions of India show widespread floodplain aggradation during Marine Isotope Stage (MIS)-5 but responded quite differently during MIS-4 e.g. degradation in the Ganga plains and aeolian deposition in the western part. Significant discontinuities were developed in the interfluves of the Ganga plains during MIS-3 and 2 whereas the western Indian rivers recorded variable response. The Holocene monsoonal fluctuations are manifested in widespread incision across western India and several events of valley filing in the Ganga plains.

Keywords

Climate of the Past, Climate Change, Indian Summer Monsoon, River Response.
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  • Sinha, R., Jain, V., Prasad Babu, G. and Ghosh, S., Geomorphic characterization and diversity of the fluvial systems of the Gangetic plains. Geomorphology, 2005, 70(3–4), 207–225.
  • Prell, W. L. and Kutzbach, J. E., Monsoon variability over the past 150,000 years. J. Geophys. Res., 1987, 92(D7), 8411–8425.
  • Thompson, L. G. et al., Tropical climate instability: the last Glacial cycle from a Qinghai–Tibetan ice core. Science, 1997, 276, 1821–1825.
  • Dutt, S. et al., Abrupt changes in Indian summer monsoon strength during 33,800 to 5500 years BP. Geophys. Res. Lett., 2015, 42, 5526–5532; doi:10.1002/2015GL064015.
  • Kathayat, G. et al., Indian monsoon variability on millennial– orbital timescales. Sci. Rep., 2016, 6, 24374.
  • Misra, P., Tandon, S. K. and Sinha, R., Holocene climate records from lake sediments in India: assessment of coherence across climate zones. Earth Sci. Rev., 2019, 190, 370–397.
  • Overpeck, J., Anderson, D., Trumbore, S. and Prell, W., The southwest Indian Monsoon over the last 18,000 years. Climate Dyn., 1996, 12, 213–225.
  • Tandon, S. K. et al., Alluvial valleys of the Gangetic Plains, India: causes and timing of incision. In Incised Valleys in Time and Space, SEPM Special Publication no. 85, 2006, pp. 15–35.
  • Tandon, S. K., Sinha, R., Gibling, M. R., Dasgupta, A. S. and Ghazanfari, P., Late Quaternary evolution of the Ganga Plains: myths and misconceptions, recent developments and future directions. Memoir J. Geol. Soc. India, 2008, 66, 259–299.
  • Sinha, R., Kumar, R., Sinha, S. Tandon, S. K. and Gibling, M. R., Late Cenozoic fluvial successions in India: an overview and synthesis. Quat. Sci. Rev., 2007, 26, 2801–2822.
  • Sinha, R., Kettanah, Y., Gibling, M. R., Tandon, S. K., Jain, M., Bhattacharjee, P. S. and Ghazanfari, P., Craton-derived alluvium as a major sediment source in the Himalayan Foreland Basin of India. Geol. Soc. Am. Bull., 2009, 121(11–12), 1596–1610.
  • Khanolkar, S., Tandon, S. K. and Sinha, R., Late Quaternary evolution and morphostratigraphic development of the Ganga Plains. In Geodynamics of the Indian Plate (eds Gupta, N. and Tandon, S. K.), Springer, 2020, pp. 467–497; https://doi.org/ 10.1007/978-3-030-15989-4_13.
  • Gibling, M. R., Tandon, S. K., Sinha, R. and Jain, M., Discontinuity – bounded alluvial sequences of the southern Gangetic plains, India: aggradation and degradation in response to monsoonal strength. J. Sediment. Res., 2005, 75(3), 369–385.
  • Gibling, M. R., Sinha, R., Roy, N. G., Tandon, S. K. and Jain, M., Quaternary fluvial and eolian deposits on the Belan River, India: palaeoclimatic setting of Palaeolithic to Neolithic archeological sites over the past 85,000 years. Quat. Sci. Rev., 2008, 27(34), 391– 410.
  • Sinha, R., Bhattacharjee, P., Sangode, S. J., Gibling, M. R., Tandon, S. K., Jain, M. and Godfrey, D., Valley and interfluve sediments in the southern Ganga plains, India: exploring facies and magnetic signatures. Sedimentary Geol., 2007, 201, 386–411.
  • Roy, N. G., Sinha, R. and Gibling, M. R., Aggradation, incision and interfluve flooding in the Ganga Valley over the past 100,000 years: testing the influence of monsoonal precipitation. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2012, 356–357, 38–53.
  • Srivastava, P., Sinha, R., Vivek Deep, Singh, A. K. and Upreti, N., Micromorphology and sequence stratigraphy of the interfluve palaeosols from Ganga plains of alluvial cyclicity and palaeoclimate during the Late Quaternary. J. Sedimentary Res., 2018, 88(1), 105–128.
  • Ghosh, R., Srivastava, P., Shukla, U. K., Sehgal, R. K. and Singh, I. B., 100 kyr sedimentary record of Marginal Gangetic Plain: implications forforebulge tectonics. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2019, 520, 78–95.
  • Singhvi, A. K. and Kar, A., The Aeolian sedimentation record of the Thar Desert. Proc. Indian Acad. Sci. Earth Planet. Sci., 2004, 113, 371–403.
  • Singhvi, A. K., Williams, M. A. J., Rajaguru, S. N., Misra, V. N., Chawla, S., Stokes, S. and Humphreys, G. S., A ∼200 ka record of climatic change and dune activity in the Thar Desert, India. Quat. Sci. Rev., 2010, 29(23–24), 3095–3105.
  • Singh, A. and Sinha, R., Fluvial response to climate change inferred from sediment cores from the Ghaggar–Hakra palaeochannel in NW Indo-Gangetic plain. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2019, 532, 109247; https://doi.org/10.1016/j.palaeo. 2019.109247.
  • Juyal, N., Raj, R., Maurya, D. M., Chamyal, L. S. and Singhvi, A. K., Chronology of Late Pleistocene environmental changes in the lower Mahi basin, western India. J. Quat. Sci., 2000, 15(5), 501– 508.
  • Jain, M. and Tandon, S. K., Fluvial response to Late Quaternary climate changes, western India. Quat. Sci. Rev. Fluvial Response Rapid Environ. Change, 2003, 22(20), 2223–2235.
  • Jain, M., Tandon, S. K., Singhvi, A. K., Mishra, S. and Bhatt, S. C., Quaternary alluvial stratigraphical development in a desert setting: a case study from the Luni River Basin. In Thar Desert of Western India Fluvial Sedimentology, Blackwell Publishing Ltd, 2005, vol. 6, pp. 349–371.
  • Thokchom, S., Bhattacharya, F., Durga Prasad, A., Dogra, N. N. and Rastogi, B. K., Palaeoenvironmental implications and drainage adjustment in the middle reaches of the Sabarmati river, Gujarat: implications towards hydrological variability. Quat. Int., 2017, 454, 1–14.
  • Andrews, J. E., Singhvi, A. K., Kailath, A. J., Kuhn, R., Dennis, P. F., Tandon, S. K. and Dhir, R. P., Do stable isotope data from calcrete record Late Pleistocene monsoonal climate variation in the Thar Desert of India? Quat. Res., 1998, 50(3), 240–251.
  • Tandon, S. K., Sareen, B. K., Rao, M. S. and Singhvi, A. K., Aggradation history and luminescence chronology of Late Quaternary semi-arid sequences of the Sabarmati basin, Gujarat, western India. Palaeogeogr., Palaeoclimatol., Palaeoecol., 1997, 128, 339–357.
  • Williams, M. A. J. and Clarke, M. F., Quaternary geology and prehistoric environments in the Son and Belan valleys, North Central India. J. Geol. Soc. India, 1995, 282–307.
  • Williams, M. A. J., Pal, J. N., Jaiswal, M. and Singhvi, A. K., River response to Quaternary climatic fluctuations: evidence from the Son and Belan valleys, north–central India. Quat. Sci. Rev., 2006, 25, 2619–2631.
  • Ghosh, R., Srivastava, P., Shukla, U. K., Singh, I., Champati Ray, P. K. and Sehgal, R. K., Tectonic forcing of evolution and Holocene erosion rate of ravines in the Marginal Ganga Plain, India. J. Asian Earth Sci., 2018, 162, 137–147.
  • Singh, A. et al., Counter-intuitive influence of Himalayan river morphodynamics on Indus Civilisation urban settlements. Nature Commun., 2017, 8(1), 1617–1630.
  • Sinha, R., Smykatz-Kloss, W., Stueben, D., Harrison, S. P., Berner, Z. and Kramar, U., Late Quaternary palaeoclimatic reconstruction from the lacustrine sediments of the Sambhar playa core, Thar Desert margin, India. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2006, 233(3–4), 252–270.
  • Kar, A., Singhvi, A. K., Rajaguru, S. N., Juyal, N., Thomas, J. V., Benerjee, D. and Dhir, R. P., Reconstruction of Late Quaternary environment of the Lower Luni Plain, Thar desert, India. J. Quat. Sci., 2001, 16, 61–68.
  • Mishra, S., Naik, S., Rajaguru, S. N., Deo, S. and Ghate, S., Fluvial response to Late Quaternary climatic change: case studies from upland western India. Proc. Indian Nat Sci. Acad., 2003, 69(92), 185–200.
  • Prizomwala, S. P., Yadav, G., Solanki, T., Das, A., Chauhan, G. and Makwana, N. A., Style and stages of valley fill aggradationincision cycles in the Northern Hill Range, Kachchh, Western India. Quat. Int., 2019; https://doi.org/10.1016/j.quaint.2018.11.020.
  • Bhattacharya, F., Shukla, Anil, D., Patel, R. C., Rastogi, B. K. and Juyal, N., Sedimentology, geochemistry and OSL dating of the alluvial succession in the northern Gujarat alluvial plain (western India) – a record to evaluate the sensitivity of a semiarid fluvial system to the climatic and tectonic forcing since the late Marine Isotopic Stage 3. Geomorphology, 2017, 297, 1–19.
  • Wang, Y. et al., Millennial- and orbital-scale changes in the East Asian monsoon over the past 224,000 years. Nature, 2008, 451, 1090–1093; http://dx.doi.org/10.1038/nature06692.
  • Gupta, A. K., Anderson, D. M. and Overpeck, J. T., Abrupt changes in the Asian southwest monsoon during the Holocene and their links to the North Atlantic Ocean. Nature, 2003, 421(6921), 354.
  • Fleitmann, D. et al., Holocene ITCZ and Indian monsoon dynamics recorded in stalagmites from Oman and Yemen (Socotra). Quat. Sci. Rev., 2007, 26, 170–188.
  • Kale, V. S., Fluvio-sedimentary response of the monsoon-fed Indian rivers to Late Pleistocene–Holocene changes in monsoon strength: reconstruction based on existing 14C dates. Quat. Sci. Rev., 2007, 26, 1610–1620.
  • Srivastava, P., Singh, I. B., Sharma, M. and Singhvi, A. K., Luminescence chronometry and Late Quaternary geomorphic history of the Ganga Plain, India. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2003, 197(1–2), 15–41.
  • Sinha, S., Suresh, N., Kumar, R., Dutta, S. and Arora, B. R., Sedimentologic and geomorphic studies on the quaternary alluvial fan and terrace deposits along the Ganga exit. Quat. Int., 2010, 227, 87–113.
  • Srivastava, P., Tripathi, J. K., Islam, R. and Jaiswal, M. K., Fashion and phases of late Pleistocene aggradation and incision in the Alaknanda River Valley, western Himalaya, India. Quat. Res., 2008, 70(1), 68–80.
  • Ray, Y. and Srivastava, P., Widespread aggradation in the mountainous catchment of the Alaknanda Ganga River System: timescales and implications to Hinterland foreland relationships. Quat. Sci. Rev., 2010, 29, 2238–2260.
  • Chaudhary, S., Shukla, U. K., Sundriyal, Y. P., Srivastava, P. and Jalal, P., Formation of palaeovalleys in the Central Himalaya during valleyaggradation. Quat. Int., 2015, 371, 254–267.
  • Barnard, P. L., Owen, L. A., Sharma, M. C. and Finkel, R. C., Natural and human induced landsliding in the Garhwal Himalaya, northern India. Geomorphology, 2001, 40, 21–35.
  • Barnard, P. L., Owen, L. A., Sharma, M. C. and Finkel, R. C., Late Quaternary (Holocene) landscape evolution of a monsooninfluenced high Himalayan valley, Gori Ganga, Nanda Devi, NE Garhwal. Geomorphology, 2004, 61, 91–110.
  • Dutta, S., Suresh, N. and Kumar, R., Climatically controlled Late Quaternary terrace staircase development in the fold-and-thrust belt of the Sub Himalaya. Palaeogeogr., Palaeoclimatol., Palaeoecol., 2012, 356, 16–26.
  • Rawat, S., Gupta, A. K., Sangode, S. J., Srivastava, P. and Nainwal, H. C., Late Pleistocene–Holocene vegetation and Indian summer monsoon record from the Lahaul, northwest Himalaya, India. Quat. Sci. Rev., 2015, 114, 167–181.
  • Srivastava, P., Parkash, B., Sehgal, J. L. and Kumar, S., Role of neotectonics and climate in development of the Holocene geomorphology and soils of the Gangetic Plains between Ramganga and Rapti rivers. Sedimentary Geol., 1994, 94, 119–151.
  • Srivastava, P., Rajak, M. K., Sinha, R., Pal, D. K. and Bhattacharyya, T., A high resolution micromorphological record of the Late Quaternary palaeosols from Ganga–Yamuna interfluve: stratigraphic and palaeoclimatic implications. Quat. Int., 2010, 227, 127–142.
  • Sharma, S., Joachimski, M. M., Tobschall, H. J., Singh, I. B., Sharma, C. and Chauhan, M. S., Correlative evidences of monsoon variability, vegetation change and human inhabitation in Sanai lake deposit: Ganga Plain, India. Curr. Sci., 2004, 90, 973–978.
  • Chauhan, M. S., Pokharia, A. K. and Srivastava, R. K., Late Quaternary vegetation history, climatic variability and human activity in the Central Ganga Plain, deduced by pollen proxy records from Karela Jheel, India. Quat. Int., 2015, 371, 144–156.
  • Trivedi, A., Chauhan, M. S., Sharma, A., Nautiyal, C. M. and Tiwari, D. P., Record of vegetation and climate during Late PleistoceneHolocene in Central Ganga Plain, based on multiproxy data from Jalesar Lake, Uttar Pradesh, India. Quat. Int., 2013, 306, 97–106.
  • Saxena, A., Trivedi, A., Chauhan, M. S. and Sharma, A., Holocene vegetation and climate change in Central Ganga Plain: a study based on multiproxy records from Chaudhary-Ka-Tal, Raebareli District, Uttar Pradesh, India. Quat. Int., 2015, 371, 164–174.
  • Dave, A. K., Courty, M. A., Fitzsimmons, K. E. and Singhvi, A. K., Revisiting the contemporaneity of a mighty river and the Harappans: archaeological, stratigraphic and chronometric constraints. Quat. Geochronol., 2019, 49, 230–235.
  • Saini, H. S., Tandon, S. K., Mujtaba, S. A. I., Pant, N. C. and Khorana, R. K., Reconstruction of buried channel-floodplain systems of the northwestern Haryana Plains and their relation to the ‘Vedic’ Saraswati. Curr. Sci., 2009, 97, 1634–1643.
  • Saini, H. S. and Mujtaba, S. A. I., Luminescence dating of the sediments from a buried channel loop in Fatehabad area, Haryana: insight into Vedic Saraswati River and its environment. Geochronometria, 2010, 37, 29–35.
  • Clift, P. D., Carter, A., Giosan, L., Durcan, J., Duller, G. A. T., Macklin, M. G. and Fuller, D. Q., U–Pb zircon dating evidence for a Pleistocene Sarasvati River and capture of the Yamuna River. Geology, 2012, 40(3), 211–214.
  • Giosan, L. et al., Fluvial landscapes of the Harappan civilization. Proc. Natl. Acad. Sci., 2012, 109(26), E1688–E1694.
  • Durcan, J. A., Thomas, D. S. G., Gupta, S., Pawar, V., Singh, R. N. and Petrie, C. A., Holocene landscape dynamics in the GhaggarHakrapalaeochannel region at the northern edge of the Thar Desert, northwest India. Quat. Int., 2019, 501(B), 317–327.
  • Srivastava, A., Thomas, D. S. G. and Durcan, J. A., Holocene Dune activity in the Thar Desert, India. Earth Surf. Process. Landforms, 2019; https://doi.org/10.1002/esp.4583.
  • Srivastava, P., Juyal, N., Singhvi, A. K., Wasson, R. J. and Bateman, M. D., Luminescence chronology of river adjustment and incision of Quaternary sediments in the alluvial plain of the Sabarmati River, north Gujarat, India. Geomorphology, 2001, 36, 217–229.
  • Prasad, S. and Enzel, Y., Holocene climate and cultural Evolution in Late Prehistoric-Early Historic West Asia, Holocene palaeoclimates of India. Quat. Res., 2006, 66(3), 442–453.
  • Sridhar, A., Chamyal, L. S. and Patel, M., Palaeoflood record of high-magnitude events during historical time in the Sabarmati River, Gujarat. Curr. Sci., 2014, 107, 675–679.
  • Prasad, S. et al., Prolonged monsoon droughts and links to IndoPacific warm pool: a Holocene record from Lonar Lake, Central India. Earth Planet. Sci. Lett., 2014, 391, 171–182.
  • Sarkar, S., Prasad, S., Wilkes, H., Riedel, N., Stebich, M., Basavaiah, N. and Sachse, D., Monsoon source shifts during the drying mid-Holocene: biomarker isotope based evidence from the core ‘monsoon zone’ (CMZ) of India. Quat. Sci. Rev., 2015, 123, 144–157.
  • Enzel, Y. et al., High-resolution holocene environmental changes in the Thar Desert, northwestern India. Science, 1999, 284(5411), 125–128.
  • Dixit, Y., Hodell, D. A., Sinha, R. and Petrie, C. A., Abrupt weakening of the Indian summer monsoon at 8.2 kyr BP. Earth Planet. Sci. Lett., 2014, 1(391), 16–23.
  • Dixit, Y., Hodell, D. A. and Petrie, C. A., Abrupt weakening of the summer monsoon in northwest India 4100 yr ago. Geology, 2014, 42(4), 339–342.
  • Wasson, R. J., Smith, G. I. and Agrawal, D. P., Late quaternary sediments, minerals, and inferred geochemical history of Didwana Lake, Thar Desert, India. Palaeogeogr., Palaeoclimatol., Palaeoecol., 1984, 46(4), 345–372.
  • Prasad, S., Kusumgar, S. and Gupta, S. K., A mid to late Holocene record of palaeoclimatic changes from NalSarovar: a palaeodesert margin lake in western India. J. Quat. Sci., 1997, 12(2), 153– 159.
  • Dixit, Y. and Tandon, S. K., Hydroclimatic variability on the Indian subcontinent in the past millennium: review and assessment. Earth Sci. Rev., 2016, 161, 1–15.
  • Singh, D. S. et al., Multiproxy record of monsoon variability from the Ganga Plain during 400–1200 AD. Quat. Int., 2015, 371, 157– 163.
  • Fleitmann, D., Burns, S. J., Mudelsee, M., Neff, U., Kramers, J., Mangini, A. and Matter, A., Holocene forcing of the Indian monsoon recorded in a stalagmite from southern Oman. Science, 2003, 300(5626), 1737–1739.
  • Ely, L. L., Enzel, Y., Baker, V. R. and Kale, V. S., Palaeoflood evidence of changes in the frequency of extreme floods on the Narmada River, Central India. Geol. Soc. Am. Bull., 1996, 108, 1134e1148.
  • Kale, V. S., Mishra, S. and Baker, V. R., A 2000-year palaeofloods record from Sakarghat on Narmada, central India. J. Geol. Soc. India, 1997, 50, 283–288.
  • Kale, V. S., Mishra, S. and Baker, V. R., Sedimentary records of palaeofloods in the bedrock gorges of the Tapi and Narmada rivers, Central India. Curr. Sci., 2003, 84, 1072–1079.
  • Kale, V. S., Long-period fluctuations in monsoon floods in the Deccan Peninsular India. J. Geol. Soc. India, 1999, 53, 5–15.
  • Kale, V. S., Singhvi, A. K., Mishra, P. K. and Banerjee, D., Sedimentary records and luminescence chronology of Late Holocene palaeofloods in the Luni River, Thar Desert, northwest India. Catena, 2000, 40, 337–358.
  • Sridhar, A., A mid-late Holocene flood record from the alluvial reach of the Mahi River, Western India. Catena, 2007, 70, 330–339.
  • Sridhar, A., Fluvial palaeohydrological studies in western India: a synthesis. Earth Sci. India, 2008, I, 21–29.
  • Sridhar, A. and Chamyal, L. S., Implications of palaeohydrological proxies on the late Holocene Indian Summer Monsoon variability, western India. Quat. Int., 2018, 479, 25–33.
  • Sridhar, A., Chamyal, L. S., Battacharya, F. and Singhvi, A. K., Early Holocene fluvial activity from the sedimentology and palaeohydrology of gravel terrace in the semi-arid Mahi River Basin. India. J. Asian Earth Sci., 2013, 66, 240–248.
  • Kale, V. S., On the links between extreme floods and excess monsoon epochs in South Asia. Clim. Dyn., 2012, 39, 1107–1122.
  • Sinha, A. et al., A 900-year (600 to 1500 AD) record of the Indian summer monsoon precipitation from the core monsoon zone of India. Geophys.Res. Lett., 2007, 34, L16707.
  • Sinha, A., Stott, L., Berkelhammer, M., Cheng, H., Buckley, B., Aldenderfer, M. and Manfred, M., A global context for megadroughts in monsoon Asia during the past millennium. Quat. Sci. Rev., 2011, 30, 47–62.
  • Kale, V. S., Ely, L. L., Enzel, Y. and Baker, V. R., Geomorphic and hydrologic aspects of monsoon floods on the Narmada and Tapi rivers in central India. Geomorphology, 1994, 10, 157–168.
  • Chatterjee, A., Ray, J. S., Shukla, A. D. and Pande, K., On the existence of a perennial river in the Harappan heartland. Sci. Rep., 2019, 9(17221), 1–7.
  • Tejavath, C. T., Ashok, K., Chakraborty, S. and Ramesh, R., A PMIP3 narrative of modulation of ENSO teleconnections to the Indian summer monsoon by background changes in the Last Millennium. Climate Dyn., 2019, 53, 3445–3461.

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  • Fluvial Archives of North and Northwestern India as Recorders of Climatic Signatures in the Late Quaternary: Review and Assessment

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Authors

Rajiv Sinha
Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur 208 016, India
Ajit Singh
Discipline of Earth Sciences, Indian Institute of Technology Gandhinagar, Gandhinagar 382 355, India
Sampat K. Tandon
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal 460 662, India

Abstract


The Indian sub-continent is characterized by extremely variable climatic regimes at present, and this strong climatic diversity is also reflected during late Quaternary and Holocene time scales. Fluvial archives across different morpho-climatic zones of India record variable response to monsoonal fluctuations through time as preserved in patterns of sedimentary sequences and characteristic facies. This study has compiled the fluvial records from north and northwestern India to synthesize the palaeoclimatic information available from this broad region and to assess the coherence or otherwise of these records across widely different morpho-climatic regimes. Rivers across different regions of India show widespread floodplain aggradation during Marine Isotope Stage (MIS)-5 but responded quite differently during MIS-4 e.g. degradation in the Ganga plains and aeolian deposition in the western part. Significant discontinuities were developed in the interfluves of the Ganga plains during MIS-3 and 2 whereas the western Indian rivers recorded variable response. The Holocene monsoonal fluctuations are manifested in widespread incision across western India and several events of valley filing in the Ganga plains.

Keywords


Climate of the Past, Climate Change, Indian Summer Monsoon, River Response.

References





DOI: https://doi.org/10.18520/cs%2Fv119%2Fi2%2F232-243