Ice-sheet reconstructions

Arkhipov, S.A.; Bespaly, V.G.; Faustova, M.A.; Glushkova, O. Yu.; Isaeva, L.L.; Velichko, Andrei

doi:10.1016/0277-3791(86)90213-1

Cited by 20 publications

(14 citation statements)

References 1 publication

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“…1-southern boundary of the Late Weichselian (Sartan) glaciation (after Volkov et al 1978); 2-Mansi Lake area (after Volkov et al 1978); 3-mammoth localities; 4-archaeological sites et al 1986b). The Late Weichselian (Upper Zyryanka or Sartan in Siberia; see Arkhipov et al 1986b) glacial lakes were smaller because of the mountain-andvalley nature of the glaciation in the polar Urals (Fig. 2).…”

Section: The Lgm Glaciation and Topographymentioning

confidence: 98%

Siberia at the Last Glacial Maximum: Environment and Archaeology

Kuzmin

2008

J Archaeol Res

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This article focuses on the presence of humans in Siberia and the Russian Far East at the coldest time of the Late Pleistocene, called the Last Glacial Maximum (LGM) and dated to c. 20,000-18,000 rcbp. Reconstruction of the LGM environment of Siberia, based on the latest models and compilations, provides a background for human existence in this region. Most of Siberia and the Russian Far East at c. 20,000-18,000 rcbp was covered by tundra and cool steppe, with some forest formations in the river valleys. Climate was much colder and drier than it is today. Eighteen Upper Paleolithic sites in Siberia are radiocarbon dated strictly to the LGM, and at least six of them, located in southern parts of western and eastern Siberia and the Russian Far East, have solid evidence of occupation during that time span. It seems clear that southern Siberia was populated by humans even at the height of the LGM, and that there was no dramatic decline or complete disappearance of humans in Siberia at that time. The degree of human adaptation to periglacial landscapes in the mid-Upper Paleolithic of northern Eurasia was quite high; humans coped with the cold and dry environmental conditions using microblade technology, artificial shelters, tailored clothes, and megafaunal bones as fuel.

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Section: The Lgm Glaciation and Topographymentioning

confidence: 98%

Siberia at the Last Glacial Maximum: Environment and Archaeology

Kuzmin

2008

J Archaeol Res

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“…Studies of glacial geomorphology, glaciotectonics, till fabric, mineralogy and the provenance of erratic clasts (Grosswald, 1980;Arkhipov et al, 1986b;Hjort et al, 2002) indicate that the ice sheets on the Taymyr Peninsula advanced from the Kara Sea shelf to the north. Ice sheets advancing from this direction must have blocked the northward drainage on the peninsula and as a result, large ice-dammed lakes were formed in front of the ice sheets.…”

Section: Glacial History Backgroundmentioning

confidence: 99%

Depositional history of the North Taymyr ice‐marginal zone, Siberia—a landsystem approach

Alexanderson

Adrielsson

Hjort

et al. 2002

J Quaternary Science

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The sediment-landform associations of the northern Taymyr Peninsula in Arctic Siberia tell a tale of ice sheets advancing from the Kara Sea shelf and inundating the peninsula, probably three times during the Weichselian. In each case the ice sheet had a margin frozen to its bed and an interior moving over a deforming bed. The North Taymyr ice-marginal zone (NTZ) comprises ice-marginal and supraglacial landsystems dominated by thrust-block moraines 2-3 km wide and large-scale deformation of sediments and ice. Large areas are still underlain by remnant glacier ice and a supraglacial landscape with numerous ice-walled lakes and kames is forming even today. The proglacial landsystem is characterised by subaqueous (e.g. deltas) or terrestrial (e.g. sandar) environments, depending on location/altitude and time of formation. Dating results (OSL, 14 C) indicate that the NTZ was initiated ca. 80 kyr BP during the retreat of the Early Weichselian ice sheet and that it records the maximum limit of a Middle Weichselian glaciation (ca. 65 kyr BP). During both these events, proglacial lakes were dammed by the ice sheets. Part of the NTZ was occupied by a thin Late Weichselian ice sheet (20-12 kyr BP), resulting in subaerial proglacial drainage.

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“…However, contradicting hypotheses are proposed for ice-sheet geometries, including locations of ice divides and limits and age for various ice-sheet configurations (Arkhipov et al, 1986;Astakhov, 1992Astakhov, , 1994Rutter, 1995;Svendsen et al, 1999). Cape Shpindler, on the Yugorski Peninsula ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Glaciotectonised Quaternary sediments at Cape Shpindler, Yugorski Peninsula, Arctic Russia: implications for glacial history, ice movements and Kara Sea Ice Sheet configuration

Lokrantz

Inǵólfsson

Forman

2003

J Quaternary Science

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The coastal cliffs of Cape Shpindler, Yugorski Peninsula, Arctic Russia, occupy a key position for recording overriding ice sheets during past glaciations in the Kara Sea area, either from the Kara Sea shelf or the uplands of Yugorski Peninsula/Polar Urals. This study on Late Quaternary glacial stratigraphy and glaciotectonic structures of the Cape Shpindler coastal cliffs records two glacier advances and two ice-free periods older than the Holocene. During interglacial conditions, a sequence of marine to fluvial sediments was deposited. This was followed by a glacial event when ice moved southwards from an ice-divide over Novaya Zemlya and overrode and disturbed the interglacial sediments. After a second period of fluvial deposition, under interstadial or interglacial conditions, the area was again subject to glacial overriding, with the ice moving northwards from an inland ice divide. The age-control suggests that the older glacial event could possibly belong to marine oxygen isotope stage (MOIS) 8, Drenthe (300-250 ka), and that the underlying interglacial sediments might be Holsteinian (>300 ka). One implication of this is that relict glacier ice, buried in sediments and incorporated into the permafrost, may survive several interglacial and interstadial events. The younger glacial event recognised in the Cape Shpindler sequence is interpreted to be of Early-to-Middle Weichselian age. It is suggested to correlate to a regional glaciation around 90 or 60 ka. The Cape Shpindler record suggests more complex glacial dynamics during that glaciation than can be explained by a concentric ice sheet located in the Kara Sea, as suggested by recent geological and model studies.

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Ice-sheet reconstructions

Cited by 20 publications

References 1 publication

Siberia at the Last Glacial Maximum: Environment and Archaeology

Siberia at the Last Glacial Maximum: Environment and Archaeology

Depositional history of the North Taymyr ice‐marginal zone, Siberia—a landsystem approach

Glaciotectonised Quaternary sediments at Cape Shpindler, Yugorski Peninsula, Arctic Russia: implications for glacial history, ice movements and Kara Sea Ice Sheet configuration

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