The chronology of a large ice-dammed lake and the Barents–Kara Ice Sheet advances, Northern Russia

Mangerud, Jan; Astakhov, Valery; Murray, Andrew; Svendsen, John Inge

doi:10.1016/s0921-8181(01)00127-8

Cited by 108 publications

(71 citation statements)

References 19 publications

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“…between the Urals and the Taimyr Peninsula between 90,000 and 80,000 YBP [marine isotope stages (MIS) 5] and 60,000 and 50,000 YBP (MIS 4/5) (25,26). However, we note that from 50,000 YBP into the last glacial maximum (LGM) the Barents-Kara Ice Sheet was too small to block these eastern rivers, so no lakes were formed and no barrier was present between the Urals and the Taimyr Peninsula, allowing gene flow to occur between the two regions at least since 50,000 YBP.…”

Section: Resultsmentioning

confidence: 99%

Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox ( Ovibos moschatus ) population dynamics

Campos

Willerslev

Sher

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

205

159

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The causes of the late Pleistocene megafaunal extinctions are poorly understood. Different lines of evidence point to climate change, the arrival of humans, or a combination of these events as the trigger. Although many species went extinct, others, such as caribou and bison, survived to the present. The musk ox has an intermediate story: relatively abundant during the Pleistocene, it is now restricted to Greenland and the Arctic Archipelago. In this study, we use ancient DNA sequences, temporally unbiased summary statistics, and Bayesian analytical techniques to infer musk ox population dynamics throughout the late Pleistocene and Holocene. Our results reveal that musk ox genetic diversity was much higher during the Pleistocene than at present, and has undergone several expansions and contractions over the past 60,000 years. Northeast Siberia was of key importance, as it was the geographic origin of all samples studied and held a large diverse population until local extinction at ≈45,000 radiocarbon years before present ( 14 C YBP). Subsequently, musk ox genetic diversity reincreased at ca. 30,000 14 C YBP, recontracted at ca. 18,000 14 C YBP, and finally recovered in the middle Holocene. The arrival of humans into relevant areas of the musk ox range did not affect their mitochondrial diversity, and both musk ox and humans expanded into Greenland concomitantly. Thus, their population dynamics are better explained by a nonanthropogenic cause (for example, environmental change), a hypothesis supported by historic observations on the sensitivity of the species to both climatic warming and fluctuations.

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Section: Resultsmentioning

confidence: 99%

Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox ( Ovibos moschatus ) population dynamics

Campos

Willerslev

Sher

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

205

159

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“…The routing of lake overflows and meltwater is important because of the potential impact on ocean circulation and climate (Rooth, 1982;Teller et al, 2002;Barber et al, 1999;Spielhagen et al, 2004;Mangerud et al, 2004;Carlson and 18 Clark, 2012). However, the discharge and location of water overflowing from these lakes varied as ice retreated from various basins, thereby opening new outlets (Teller and Thorleifson, 1983;Teller, 1987;Smith and Fisher, 1993;Smith, 1994;Mangerud et al, 2001;. Records of pre-LGM proglacial lakes (and drainage) must have been equally complex, but most of that record has been eroded or is fragmentary and buried, and is likely to only be discernible in ocean sediment records (Nicholl et al, 2012).…”

Section: Proglacial Hydrology Of Ice Sheets and Proglacial Lakesmentioning

confidence: 99%

“…Mangerud et al 2001;Murray et al, 2007), and some studies have successfully dated sediments older than the…”

Section: Luminescence Datingmentioning

confidence: 99%

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On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Stokes

Tarasov

Blomdin

et al. 2015

Quaternary Science Reviews

142

101

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“…Luminescent dating of beach sediments of the last ice-dammed lake, Lake Komi, yielded values of Ž . about 80-100 ka Mangerud et al, 1999Mangerud et al, , 2001 . Predecessors erroneously ascribed an Early Holocene Ž age to the Markhida ice advance Grosswald et al, .…”

Section: Modern Datamentioning

confidence: 99%

The stratigraphic framework for the Upper Pleistocene of the glaciated Russian Arctic: changing paradigms

Astakhov

2001

Global and Planetary Change

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The development of stratigraphic ideas and terminology for the area of Late Pleistocene glaciation beyond the limit of the Fennoscandian ice sheet is discussed. The original meaning and subsequent distortions of the Siberian stratigraphic terms Zyryanka, Karginsky, Sartan and others are described. Stratigraphic schemes traditionally used in Siberia and in the Russian European Arctic contain similar mistakes due to poor sedimentology obtained from simplistic log descriptions. Indiscriminate use of radiocarbon dating, in disregard to the sedimentological complications, have eroded the value of the old stratigraphic terms and depleted their usefulness. Modern data on widespread glaciotectonic activity and redeposition of organics by shelf-based ice sheets, on retarded melting of buried glacial ice, on ubiquitous permafrost and aeolian processes, coupled with new geochronometric results make it impossible to employ the old framework based on the presumption of undisturbed stratification and slow unperturbed sedimentation. A more structurally complicated model, to which traditional stratigraphic labels are not applicable, is suggested for the uppermost sedimentary formations of arctic plains. It is derived from a wider view of the glacigenic complex by lateral tracing of study objects as a necessary complement to conventional log descriptions. The old Siberian stratigraphic scheme, being obsolete and misleading, is not recommended for further use. q 2001 Elsevier Science B.V. All rights reserved.Keywords: Upper Pleistocene; stratigraphy; glacial geology; Russian Arctic PrefaceThis paper is inspired by the growing number of Quaternary studies performed in the Russian Arctic by West European scientists, mostly under the aegis of the QUEEN programme. The objective of the Ž . paper is twofold: 1 to briefly outline the development of stratigraphic ideas for the Late Pleistocene ) Fax: q7-812-328-3916.Ž . E-mail address: valery@nb1466.spb.edu V. Astakhov . of the Russian Arctic, responsible for origin of the Ž . existing terminology; and 2 to summarize recent results leading to a revision of the conventional stratigraphic wisdom. Such a review seems timely because foreign researchers are not necessarily familiar with the origin or spelling of common names in Siberian stratigraphy, and even less with the ideas behind them. Moreover, many Russian writers, especially those not professionally involved in the northern glacial geology, often misuse traditional labels, thus contributing to the notorious confusion in Quaternary stratigraphy of the Russian Arctic.

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The chronology of a large ice-dammed lake and the Barents–Kara Ice Sheet advances, Northern Russia

Cited by 108 publications

References 19 publications

Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox ( Ovibos moschatus ) population dynamics

Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox ( Ovibos moschatus ) population dynamics

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

The stratigraphic framework for the Upper Pleistocene of the glaciated Russian Arctic: changing paradigms

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