Quaternary glaciations in the Verkhoyansk Mountains, Northeast Siberia

Stauch, Georg; Lehmkuhl, Frank

doi:10.1016/j.yqres.2010.04.003

Cited by 36 publications

(34 citation statements)

References 53 publications

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“…3) at the LGM. This contrasts with the limited glacier extents reconstructed for the LGM in the regions farther east (Stauch et al, 2007;Stauch and Gualtieri, 2008;Stauch and Lehmkuhl, 2010) and also with the south-eastern sector of the 17 Barents-Kara Ice Sheet, which did not reach continental Siberia during OIS-2 .…”

Section: Glaciation In the High Mountain Ranges: Kodar And Udokancontrasting

confidence: 69%

“…1). Here moraine complexes dated with infrared optically stimulated luminescence indicate minimal ice masses during the (global) LGM (Stauch et al, 2007;Stauch and Gualtieri, 2008;Stauch and Lehmkuhl, 2010). Shahgedanova et al, 2003).…”

Section: Introductionmentioning

confidence: 94%

“…The lack of either geochronology or systematic mapping of the glacial geomorphology has kept Transbaikalia as an empty space on the map between the more closely studied regions of the south Siberian mountains (e.g., Lehmkuhl et al, 2004;Komatsu et al, 2007a, b;Lehmkuhl et al, 2007;Gillespie et al, 2008;Lehmkuhl et al, 2011;Arzhannikov et al, 2012;Zhao et al, 2013) and the mountains of far north-east Russia and the Kamchatka peninsula (e.g., Brigham-Grette, 2001;Bigg et al, 2008;Stauch et al, 2007;Stauch and Gualtieri, 2008;Stauch and Lehmkuhl, 2010;Barr and Clark, 2011;2012). This knowledge gap motivated the mapping survey of …”

Section: Glacial Historymentioning

confidence: 99%

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Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum

Margold

Jansen

Gurinov

et al. 2016

Quaternary Science Reviews

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Successively smaller glacial extents have been proposed for continental Eurasia during the stadials of the last glacial period leading up to the Last Glacial Maximum (LGM). At the same time the large mountainous region east of Lake Baikal, Transbaikalia, has remained unexplored in terms of glacial chronology despite clear geomorphological evidence of substantial past glaciations. We have applied cosmogenic 10Be exposure dating and optically stimulated luminescence to establish the first quantitative glacial chronology for this region. Based on eighteen exposure ages from five moraine complexes, we propose that large mountain ice fields existed in the Kodar and Udokan mountains during Oxygen Isotope Stage 2, commensurate with the global LGM. These ice fields fed valley glaciers (>100 km in length) reaching down to the Chara Depression between the Kodar and Udokan mountains and to the valley of the Vitim River northwest of the Kodar Mountains. Two of the investigated moraines date to the Late Glacial, but indications of incomplete exposure among some of the sampled boulders obscure the specific details of the post-LGM glacial history. In addition to the LGM ice fields in the highest mountains of Transbaikalia, we report geomorphological evidence of a much more extensive, ice-cap type glaciation at a time that is yet to be firmly resolved. geomorphological evidence of a much more extensive, ice-cap type glaciation at a time that is yet to be firmly resolved. KeywordsGlaciation, Transbaikalia, Last Glacial Maximum, Cosmogenic 1 * * * * * * * * 10Be exposure dating, Optically stimulated luminescence. Highlights-Eighteen 10Be exposure ages on moraines in high mountains of Transbaikalia, Siberia.-Large ice fields existed in the mountains of Transbaikalia at the global LGM.-Lower mountain ranges of Transbaikalia were also heavily glaciated at the LGM.-Evidence exists for an extensive ice cap, the timing of which is yet to be resolved.

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Section: Glaciation In the High Mountain Ranges: Kodar And Udokancontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 94%

Section: Glacial Historymentioning

confidence: 99%

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Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum

Margold

Jansen

Gurinov

et al. 2016

Quaternary Science Reviews

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“…We assume that the landscape dynamics of the Lena catchment probably exerted a very large influence on changes in the hydrological regime in our study region. The late Pleistocene glaciation of the Verkhoyansky Mountains was expressed by several strong mountain glacier advances during the early Weichselian (MIS 4) period, and minor advances during the Middle and Late Weichselian (Arkhipov et al, 1986;Kind, 1975;Kolpakov, 1979;Popp et al, 2006;Stauch and Gualtieri, 2008;Stauch and Lehmkuhl, 2010;Stauch et al, 2007). These glacier dynamics, as well as paleoprecipitation patterns in the large Lena catchment, likely also controlled the dynamics of the Lena River in its lower reaches.…”

Section: Discussion and Interpretationmentioning

confidence: 99%

Late Quaternary paleoenvironmental records from the western Lena Delta, Arctic Siberia

Schirrmeister

Grosse

Schnelle

et al. 2011

Palaeogeography, Palaeoclimatology, Palaeoecology

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The three main Lena Delta terraces were formed during different stages of the late Quaternary. While only the first floodplain terrace is connected with active deltaic processes, the second and third terraces, which dominate the western part of the delta, are erosional remnants of arctic paleolandscapes affected by periglacial processes. The landscape dynamics of the second and the third terraces, and their relationship to each other, are of particular importance in any effort to elucidate the late Quaternary paleoenvironment of western Beringia. Multidisciplinary studies of permafrost deposits on the second terrace were carried out at several sites of the Arga Complex, named after the largest delta island, Arga-Muora-Sise. The frozen sediments predominantly consist of fluvial sands several tens of meters thick, radiocarbon-dated from N 52 to 16 kyr BP. These sands were deposited under changing fluvial conditions in a dynamic system of shifting river channels, and have been additionally modified by synsedimentary and postsedimentary cryogenesis. Later thermokarst processes affected this late Pleistocene fluvial landscape during the Lateglacial and the Holocene. In addition, eolian activity reworked the fluvial sands on exposed surfaces at least since the Lateglacial, resulting in dune formation in some areas. Contrary to the Arga Complex, the third terrace is mainly composed of polygenetic alluvial and proluvial ice-rich permafrost sequences (Ice Complex deposits) radiocarbon-dated from 50 to 17 kyr BP which cover older fluvial sand units luminescence-dated to about 100-50 kyr BP. Paleoecological records reflect tundra-steppe conditions that varied locally, depending on landscape dynamics, during the Marine Isotope Stage (MIS) 4 and 3 periods, and a persistent change to shrub and arctic tundra during Lateglacial and Holocene periods. The study results indicate a continuous fluvial sedimentation environment for the Laptev Sea shelf in the region of the second Lena Delta terrace during the late Pleistocene, and confirm the presence of a dynamic channel system of the paleo-Lena River that flowed at the same time as the nearby subaerial Ice Complex deposits were being formed.

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“…Anyuy and Pekulney Mountains). The Verkhoyansk Mountains (centred on ~ 67°N, 127°E) even appear to have remained largely ice free during the gLGM (Stauch and Gualtieri, 2008;Stauch and Lehmkuhl, 2010;Zech et al, 2011;Barr and Clark, 2012 …”

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confidence: 99%

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

Meyer

Barr

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T AbstractIt is generally assumed that during the global Last Glacial Maximum (gLGM, i.e. 18-24 ka BP) dry climatic conditions in NE Russia inhibited the growth of large ice caps and restricted glaciers to mountain ranges. However, recent evidence has been found to suggest that glacial summers in NE Russia were as warm as at present while glaciers were more extensive than today. As a result, we hypothesize that precipitation must have been relatively high in order to compensate for the high summer temperatures and the resulting glacial ablation. We estimate precipitation abundance by mass balance calculations for the paleo-glaciers on Kamchatka and in the Kankaren Range using a degree-day-modelling (DDM) approach, and find that precipitation during the gLGM was likely comparable to, or even exceeded, the modern average. We suggest that stronger than present southerly winds over the Northwest Pacific may have accounted for the abundant precipitation. The DDM-results imply that summer temperature, rather than aridity, limited glacier extent in the southern Pacific Sector of NE Russia during the gLGM.Keywords: Siberia, Last Glacial Maximum, glaciation, precipitation, summer temperature ACCEPTED MANUSCRIPTA C C E P T E D M A N U S C R I P T 2 1) IntroductionAn understanding of the extent of glaciers in East Asia during the global Last Glacial Maximum (gLGM, i.e. 18-24 ka BP, Mix et al. (2001)), and an appreciation of the underlying controlling mechanisms are important for the paleoclimate modelling community, as the presence of large ice-caps during this period would strongly impact climatic conditions in the North Pacific (N Pacific) region (Felzer et al., 2001, Bigg et al., 2008. Glacier extent in Northeast Russia (NE Russia) during the gLGM has been controversially discussed in the literature. For a long time the idea that a...

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Quaternary glaciations in the Verkhoyansk Mountains, Northeast Siberia

Cited by 36 publications

References 53 publications

Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum

Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum

Late Quaternary paleoenvironmental records from the western Lena Delta, Arctic Siberia

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

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