Thermoluminescence dating and its implications for the chronostratigraphy of loess-paleosol sequences in the Kashmir Valley (India)

Singhvi, A. K.; Bronger, A.; Pant, R. K.; Sauer, W.

doi:10.1016/0168-9622(87)90061-3

Cited by 57 publications

(35 citation statements)

References 11 publications

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“…On the Himalayan flank, the thickness of the loess cover does not exceed 10m, on the Pit Panjal one -it is about 25m. This event is associated with the regression of Paleolake Karewa and the beginning of loess formation Singhvi et al 1987). Here the ancient loesses are reported to be laterally equivalent to the lacustrine deposits of the Upper Karewa (Agrawal 1985;Bronger, Pant 1985;Pant et al 1985).…”

Section: Figmentioning

confidence: 76%

Loess of Central Asia

Dodonov

1991

GeoJournal

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Section: Figmentioning

confidence: 76%

Loess of Central Asia

Dodonov

1991

GeoJournal

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“…Accurate chronological data is essential to understand and establish the timing of events documented within geoarchives in general and also loess deposits (e.g., Singhvi et al, 1987;Zeeden et al, 2018a,b). A number of techniques, including relative and radiometric dating techniques, have been used to understand the chronology of loess-palaeosol sequences.…”

Section: Available Datamentioning

confidence: 99%

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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“…Notwithstanding the difficulties associated with luminescence dating at the time, other studies also resulted in the proposal of a revised chronostratigraphy at various loess sites (e.g. Singhvi et al 1987; Juvigné & Wintle 1988; Wintle & Packman 1988; Singhvi et al 1989; Zöller et al 1994). While some luminescence studies demonstrated good agreement with radiocarbon dates obtained for palaeosols within loess sequences (e.g.…”

Section: Early Applications Of Luminescence Dating To Loess Depositsmentioning

confidence: 99%

“…from rootlets) giving rise to age underestimates (e.g. Juvigné & Wintle 1988 and Singhvi et al 1987, respectively).…”

Section: Early Applications Of Luminescence Dating To Loess Depositsmentioning

confidence: 99%

The development and application of luminescence dating to loess deposits: a perspective on the past, present and future

Roberts

2008

Boreas

192

107

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Roberts, H. M. (2008). The development and application of luminescence dating to loess deposits: a perspective on the past, present and future. Boreas 37(4), 483-507.Loess deposits preserve important records of Quaternary climate change and atmospheric dust flux; however, their full significance can only be revealed once a reliable chronology is established. Our understanding of loess-palaeosol sequences and the development of luminescence dating techniques have progressed hand-in-hand over the past 25 years, with each subject informing the advancement of the other. This article considers the development and application of luminescence dating techniques to loess deposits from the early days of thermoluminescence (TL) to the optically stimulated luminescence (OSL) methods utilized today. Recent technological and methodological advances have led to a step-change in the accuracy and precision of quartz OSL ages; this has led to an expansion of high-resolution luminescence studies, which in turn are informing loess studies and challenging some of the basic ideas regarding the nature of loess records, their formation and their significance. Future luminescence research efforts are likely to focus on extending the age range of luminescence techniques, possibly by utilizing new luminescence signals; this, again, will allow investigation of the long-term variability of loess records in comparison with other long records of climate change to which they are frequently compared.Peer reviewe

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Thermoluminescence dating and its implications for the chronostratigraphy of loess-paleosol sequences in the Kashmir Valley (India)

Cited by 57 publications

References 11 publications

Loess of Central Asia

Loess of Central Asia

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

The development and application of luminescence dating to loess deposits: a perspective on the past, present and future

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