Late Quaternary loess-like paleosols and pedocomplexes, geochemistry, provenance and source area weathering, Manasbal, Kashmir Valley, India

Babeesh, C.; Achyuthan, Hema; Jaiswal, Manoj K.; Lone, Aasif Mohmad

doi:10.1016/j.geomorph.2017.01.004

Cited by 37 publications

(14 citation statements)

References 87 publications

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“…It can be further sub-divided into the Dubjan, Rembiara, and Methawoin Members. With the continuous uplift of the Pir-Panjal Range and the onset of Pleistocene glacial aridity, the Nagum Formation (Upper Karewa) deposits were exposed after draining and desiccation of the lake, and were subsequently overlain by aeolian loess (Burbank and Johnson, 1982;Agrawal et al, 1989;Babeesh et al, 2017). The sediments of the Nagum Formation are again divided into Shopian, Pampore and Krungus Members.…”

Section: Geological Setting Of Kashmir and The Loess-palaeosol Sequencesmentioning

confidence: 99%

“…The three humic horizons above this thick Bt horizon are dated to ∼80-50 ka. Babeesh et al (2017) use optically stimulated luminescence to date the upper 8.7 m of the Manasbal section to the last 40 ka. Agrawal et al (1988) proposed the loess-palaeosol sequences to date back to ca.…”

Section: Available Datamentioning

confidence: 99%

“…The available literature reveals that the grain size of Kashmir loess is dominated by silt-size particles in the range from 6 to 20 µ, making up 30-40% of the total sample and the clay content ranging commonly from 25 to 35% (Bronger et al, 1987a). The grain size has mostly been used to discriminate the source of dust and quantify the degree of weathering (Bronger et al, 1987a;Babeesh et al, 2017), while no study has been published so far which has used grain size as proxy for paleoenvironments. Bronger et al (1987a) suggest that some of the loess may be reworked local lake sediments, but also argue that the fine grain size (compared to European loess) suggests a distant source beyond the Kashmir Valley itself.…”

Section: Grain Size Datamentioning

confidence: 99%

“…Their Chondrite normalized REE-patterns are characterized by moderate enrichment of LREEs, a relatively flat HREE pattern (Gd CN /Yb CN = 1.93-2.31), a lack of a prominent negative Eu anomaly (Eu/Eu * = 0.73-1.01, average = 0.81) and variable amounts of total REE ( REE = 156-226 ppm). The lack Kusumgar et al, 1986;Gupta et al, 1991 Element geochemistry Provenance is stable, weathering intensity varies Lodha et al, 1987Lodha et al, , 1988Ahmad and Chandra, 2013;Chandra and Ahmad, 2013;Chandra et al, 2016;Babeesh et al, 2017 Isotope geochemistry Pleistocene climateand precipitation changes Krishnamurthy et al, 1982Krishnamurthy et al, , 1986Dar et al, 2015b XRD of a negative Eu anomaly reflects partial weathering of plagioclase feldspar, which also reflects its paucity in the source area.…”

Section: Geochemistry Of Kashmir Loessmentioning

confidence: 99%

“…5000, ca 18,000 and > 31,000 BP all represent major climatic oscillations indicating interglacial conditions, also around the LGM. Recently, optically stimulated luminescence (OSL) dating of loess like palaeosols in the Manasbal section (total section thickness 10.6 m) yielded ages of 41.7 ± 8.0 ka (at a depth of 8.7 m), and 14.6 ± 3.8 ka (at a depth of 2.9 m), coinciding with the age of marine isotope stages (MIS) 3 and late MIS2, respectively (Babeesh et al, 2017). The palaeosol formed during the MIS3 shows well-developed Ah/Btk characteristics, reflecting rather wet climatic conditions.…”

Section: Paleopedology In the Context Of Chronologymentioning

confidence: 99%

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Loess-Palaeosol Sequences in the Kashmir Valley, NW Himalayas: A Review

Dar

Zeeden

2020

Front. Earth Sci.

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Loess deposits and intercalated palaeosols are widespread in the Quaternary record, and these have been extensively used to gain insights into continental paleoclimatic and paleo-environmental conditions and changes. Especially over Eurasia, loess geoarchives play an important role for our understanding of past changes. Loess covers almost 500 km 2 of the Kashmir Valley in northwestern India, it occurs dominantly in plateau positions, but also on terraces and sometimes forms slope deposits with thicknesses ranging from several to more than 20 m. For the time being, however, the timing of the initiation of the loess accumulation, the provenance, the grain size composition and also the paleo-environment have not been studied systematically and yet only little quantitative data is available. Yet it is clear that deposition rates are at least comparable to European loess, and that the presence of multiple palaeosols intercalated in the loess can provide valuable information on the history of the region. The limited available data hinders regional and continental correlation, and tapping its value as archive of past environmental changes in this sensitive region with influence from Westerlies and the Indian Monsoon. However, several characteristic palaeosol patterns can be traced throughout the Kashmir valley, which provide stratigraphic information. Several studies investigate physical and chemical properties of the loess-paleosol sequences and conclude to its aeolian origin and recording of past climates. The intensity of soil formation phases is traced through various proxies in low resolution and yet without conclusive age control. Here we review the exiting literature, available data, and interpretations from loess-palaeosol sequences in the Kashmir Valley. These are placed in the context of our own observations and loess from the Indian subcontinent.

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Section: Geological Setting Of Kashmir and The Loess-palaeosol Sequencesmentioning

confidence: 99%

Section: Available Datamentioning

confidence: 99%