Palaeoclimatic conditions in the upper Pleistocene and Holocene Bhimtal-Naukuchiatal lake basin in south-central Kumaun, North India

Kotlia, Bahadur Singh; Bhalla, M. S.; Sharma, Chaitanya; Rajagopalan, G.; Ramesh, R.; Chauhan, Mamta; Mathur, P. D.; Bhandari, Subhash; Chacko, Soman

doi:10.1016/s0031-0182(96)00126-5

Cited by 91 publications

(38 citation statements)

References 21 publications

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“…The activation of the Karakoram fault in the Shyok suture zone is recorded at 13.9F0.1 Ma (Bhutani et al, 2003), however, these fault lines must have been active during the Quaternary especially at~50,000 years BP, 35,000 years BP and 25,000 years BP. The tectonic movement at 40,000-50,000 years BP is also recorded from the south central Kumaun (Valdiya, 1986(Valdiya, , 1989(Valdiya, , 1993Singhvi et al, 1994;Kotlia et al, 1997c;Kotlia and Phartiyal, 1999) and Nepal Himalaya. Voluminous amounts of scree coming down from the mountains, huge fanglomerates on both side of the valleys, deep gorges, narrow valleys, waterfalls, uplift and the receding of the glaciers form some of the evidence for Quaternary neotectonic activity.…”

Section: Discussionmentioning

confidence: 80%

Quaternary geology, tectonics and distribution of palaeo- and present fluvio/glacio lacustrine deposits in Ladakh, NW Indian Himalaya—a study based on field observations

Phartiyal¹,

Sharma²,

Upadhyay³

et al. 2005

Geomorphology

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Section: Discussionmentioning

confidence: 80%

Quaternary geology, tectonics and distribution of palaeo- and present fluvio/glacio lacustrine deposits in Ladakh, NW Indian Himalaya—a study based on field observations

Phartiyal¹,

Sharma²,

Upadhyay³

et al. 2005

Geomorphology

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“…Although various archive-proxy based palaeoclimatic researches through Pleistocene-Holocene transition are available from the Indian Himalaya [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] but the poorly dated profiles obstructs their being most ideal high resolution records except for the Tsokar and Tso Moriri multi-proxy high resolution studies [39][40][41] respectively. Further, precisely dated stalagmite based multi-decadal records are rare through the Late Pleistocene-Holocene transition [42] although δ 18 O precipitation variability during Middle to Late Holocene has been obtained through U/Th dated speleothems [21,22,43,44].…”

Section: Introductionmentioning

confidence: 99%

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Kotlia

Singh

Sanwal

et al. 2016

J Earth Sci Clim Change

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Investigated for d 18 O and d 13 C isotopes, mineralogy and growth rate, a 20 cm long and 230Th-dated calcite stalagmite from Kalakot (Jammu and Kashmir Himalaya), has recorded high resolution precipitation variability during the Pleistocene-Holocene transition. At present, the study area is influenced by both the Indian Summer Monsoon (ISM) and Westerlies. The StalAge model indicates that the stalagmite grew between 16.3 ka to 9.5 ka BP under the ideal isotopic equilibrium conditions as revealed by the Hendy test results. The d18 O and d 13 C values range from -5.41 to -8.82% and -7.09 to -10.84% respectively. Although the U/Th chronology is poor due to low Uranium content in the samples resulting in relatively large errors, the first stalagmite inferred precipitation variability reconstructed from NW Indian Himalaya makes this study significant. The near footprints of three global events, e.g., Older Dryas (OD), Allerød period and Younger Drays (YD) can be noticed at ~14.3-13.9, 13.9-12.7 and 12.7-12.2 ka BP. The precipitation strength was weaker during the OD and YD, but was stronger during the Allerød interstadial. By the termination of YD interval, the climate seems fluctuating in the NW Himalaya. There seems variation in commencement, duration and termination of the above mentioned events in different parts of the globe due to latitude location and response time.

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“…Deterioration of the water quality of Kumaon lakes because of the intense cultural activities in their catchment areas has been recognised and limnological characteristics of the lakes located in the region have been studied by various workers (Das and Pande 1978;Gupta and Pant 1983;Khulbe 1982;Pande and Das 1980;Pant and Bisht 1980;Pant et al 1981;Purohit and Singh 1981;Singh et al 1980). The lakes in this region have also been studied for structure and tectonics (Valdiya 1980(Valdiya , 1988, sediment accumulation (Das et al 1994) water balance (Kumar et al 1999) and palaeoclimatic conditions (Kotlia et al 2000). Das et al (1995) studied the elemental chemistry of sediments while Chakrapani (2002) studied sediment geochemistry of major Kumaun lakes and reported that water chemistry of these lakes is dominated by Ca, Mg and HCO 3 .…”

Section: Introductionmentioning

confidence: 99%

Metal Fractionation Study on Bed Sediments of Lake Nainital, Uttaranchal, India

Jain

Malik

Yadav

2007

Environ Monit Assess

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Lake Nainital in the heart of Nainital Town in the State of Uttaranchal (India) receives toxic substances through various open drains through the catchment of the lake. The toxic substances of particular interest are heavy metals derived from urban runoff as well as municipal sewage and industrial effluents. Heavy metals entering the lake get adsorbed onto the suspended sediments, which in turn settle down in the bottom of the lake. In this study fractionation of metal ions has been studied on the bed sediments of lake Nainital with the objective to determine the eco-toxic potential of metal ions. Comparison of sediments with average shae values indicated anthropogenic enrichment with nickel, lead, cadmium and zinc. The risk assessment code as applied to the present study reveals that 4-13% of manganese, 4-8% of copper, 17-24% of nickel, 3-5% of chromium, 13-26% of lead, 14-23% of cadmium and 2-3% of zinc exist in exchangeable fraction and therefore comes under low to medium risk category and may enter into food chain. The association of these metals with exchangeable fraction may cause deleterious effects to aquatic life. The present database will help in formulating guidelines for carrying out dredging operations and/or restoration programmes in the Nainital lake.

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Palaeoclimatic conditions in the upper Pleistocene and Holocene Bhimtal-Naukuchiatal lake basin in south-central Kumaun, North India

Cited by 91 publications

References 21 publications

Quaternary geology, tectonics and distribution of palaeo- and present fluvio/glacio lacustrine deposits in Ladakh, NW Indian Himalaya—a study based on field observations

Quaternary geology, tectonics and distribution of palaeo- and present fluvio/glacio lacustrine deposits in Ladakh, NW Indian Himalaya—a study based on field observations

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Metal Fractionation Study on Bed Sediments of Lake Nainital, Uttaranchal, India

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