Late Quaternary climatic changes in the eastern Kumaun Himalaya, India as deduced from multi-proxy studies

Kotlia, Bahadur Singh; Sanwal, Jaishri; Phartiyal, Binita; Joshi, L. M.; Trivedi, Anjali; Sharma, Chaitanya

doi:10.3126/hjs.v5i7.1277

Cited by 18 publications

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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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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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“…We document here important research work on unconsolidated sediment deposits of the Quaternary period,where the geochemical proxy is an important proxy among others in the paleoclimate study. Studies in this regard include lake deposits of the Himalaya (Choudhary et al, 2013;Srivastava et al, 2013;Kotlia et al, 2010;Agrawal et al, 2015;Das et al, 2010), the Ganga plain (Saxena et al, 2015) and the peninsular region (Chauhan et al, 2013a;Chauhan et al, 2013b;Prasad et al, 2014;Raj et al 2015). Studies on fluvial deposits of the Narmada valley (Sridhar et al, 2015) and Cauvery delta in the peninsular region have also yielded good results.…”

Section: Sediment Geochemistry As Paleoclimate Proxymentioning

confidence: 88%

“…Another tectonic lake in the Champawat district of eastern Kumaun Himalaya formed at ca. 21500 BP was studied by Kotlia et al (2010). Multi-proxy data (carbon isotopes, pollen analysis, mineral magnetism and clay minerals) revealed well-established abrupt climatic events globally in the last 20,000 years, such as the LGM, Older Dryas, Younger Dryas, Holocene warming, and 8.2 ka and 4.2 ka events.…”

Section: Sediment Geochemistry As Paleoclimate Proxymentioning

confidence: 99%

“…Radiocarbon ( 14 C) dating provides the age of the carbon, which is useful in dating sediment deposits (Kotlia et al, 2010;Raj et al, 2015). 13 C/ 12 C ratios are required to calculate δ 13 C values to identify C3 and C4 photosynthesis pathways and type of vegetation in the provenance (see Agrawal et al, 2015;Choudhary et al, 2013;Das et al, 2010;Kotlia et al, 2010). In addition to δ 13 C, δ 15 N values (calculated using 15 N/ 14 N ratios) is also used as an important proxy to the vegetation in the palaeoclimate studies (Choudhary et al, 2013;Agrawal et al, 2015).…”

Section: Weathering Of Rocks Controls the Mineralogy And Composition mentioning

confidence: 99%

“…Source of carbon can be identified using 14 C, 12 C, 13 C isotopes. Radiocarbon ( 14 C) dating provides the age of the carbon, which is useful in dating sediment deposits (Kotlia et al, 2010;Raj et al, 2015). 13 C/ 12 C ratios are required to calculate δ 13 C values to identify C3 and C4 photosynthesis pathways and type of vegetation in the provenance (see Agrawal et al, 2015;Choudhary et al, 2013;Das et al, 2010;Kotlia et al, 2010).…”

Section: Weathering Of Rocks Controls the Mineralogy And Composition mentioning

confidence: 99%

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Recent Contributions in the Field of Sediment Geochemistry

Azam

Tripathi

2016

Proceedings of the Indian National Science Academy

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Sediment geochemistry is a powerful tool to investigate earth surface processes because sediments record geochemical signatures of their provenance, generation, transport, deposition, and environmental conditions. A significant advancement in the technology of analytical geochemistry has made geochemical analyses of sediments more rapid and precise, which together provided an impetus to the study of sediment system. As a result, high-quality research papers on sediment geochemistry have been published during the last five years from India. A foreseeable growth of research and an increase in the publication are likely in the future because of the new set-ups of state-of the-art analytical instruments for geochemical research at various research and academic institutions in India. Here we are presenting the published important work on sediment geochemistry under three categories, i.e., weathering, erosion, deposition and provenance determination; sediment geochemistry as palaeoclimate proxy; and environmental geochemistry.

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Sedimentary environment and geomorphic development of the uppermost Siwalik molasse in Kumaun Himalayan Foreland Basin, North India

et al. 2017

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An area of about 250 sq. km. around Ramnagar and Garjiya within the Siwalik molasse in the Kumaun foothills was mapped for geomorphic evolution and sedimentation pattern. The area, bounded by Himalayan Frontal Thrust (HFT) in the south and Main Boundary Thrust (MBT) in the north, consists of the sediments of uppermost part of the Pinjor and overlying Boulder Conglomerate Formations. Sedimentologically, three facies associations (FAA-FAC) were recognized with their order of superposition as FAA → FAB, FAA → FAC, FAB → FAC and FAC → FAB with variability in depositional setting. Lithofacies FAA-FAC were seemingly deposited in sand-dominated fluvial channel belt, gravelly braided channel belt and cut-off channel settings, respectively. The sediment dispersal in the basin was influenced by active basinal tectonics that caused frequent avulsions during the Bounder Bed times. The compositions of the clasts of these lithofacies reveal a shift in the primary provenance from pre-Tertiary Himalayan hinterlands during the emplacement of FAA (of the Pinjor Formation) to evolving frontal Siwalik highlands during the emplacement of FAB and FAC (of the Bouldder Conglomerate Formation). This temporal shift in the provenance indicates exhumation of the older Siwalik sequences during the later phases of Himalayan orogeny. A number of subordinate faults, oblique to above mentioned intracrustal boundary thrusts and formed after the sedimentation was seized, were likely responsible for displacement between the sediments of different associations. The neotectonic rejuvenation is also reflected by the upliftment of two sister basins in opposite direction, rapid uplift in V-shaped valleys, fault escarpments, three levels of terrace development and displacement of rock types along the subordinate faults as well as deflection and entrenchment in the course of lower order streams.

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Late Quaternary climatic changes in the eastern Kumaun Himalaya, India as deduced from multi-proxy studies

Abstract: DOI = 10.3126/hjs.v5i7.1277 Himalayan Journal of Sciences Vol.5(7) (Special Issue) 2008 p.81

Cited by 18 publications

References 0 publications

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

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

Recent Contributions in the Field of Sediment Geochemistry

Sedimentary environment and geomorphic development of the uppermost Siwalik molasse in Kumaun Himalayan Foreland Basin, North India

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