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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Depositional history of the North Taymyr ice-marginal zone, Siberia - a landsystem approach. / Alexanderson, Helena; Adrielsson, Lena; Hjort, Christian; Möller, Per; Antonov, O; Eriksson, S; Pavlov, M.

I: Journal of Quaternary Science, Vol. 17, Nr. 4, 2002, s. 361-382.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Depositional history of the North Taymyr ice-marginal zone, Siberia - a landsystem approach

AU - Alexanderson, Helena

AU - Adrielsson, Lena

AU - Hjort, Christian

AU - Möller, Per

AU - Antonov, O

AU - Eriksson, S

AU - Pavlov, M

PY - 2002

Y1 - 2002

N2 - 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, C-14) 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. Copyright (C) 2002 John Wiley Sons, Ltd.

AB - 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, C-14) 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. Copyright (C) 2002 John Wiley Sons, Ltd.

KW - glaciation

KW - ice-marginal zone

KW - landsystem

KW - Weichselian

KW - Siberia

U2 - 10.1002/jqs.677

DO - 10.1002/jqs.677

M3 - Article

VL - 17

SP - 361

EP - 382

JO - Journal of Quaternary Science

JF - Journal of Quaternary Science

SN - 1099-1417

IS - 4

ER -