CHARACTERISTIC FEATURES OF THE OSTASHKOV ICE SHEET DEGRADATION WITHIN CHUDSKO-PSKOVSKAYA LOWLAND

N. V. Karpukhina

doi:10.15356/0435-4281-2013-4-38-47

CHARACTERISTIC FEATURES OF THE OSTASHKOV ICE SHEET DEGRADATION WITHIN CHUDSKO-PSKOVSKAYA LOWLAND

N. V. Karpukhina

https://doi.org/10.15356/0435-4281-2013-4-38-47

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Abstract

The model of the Ostashkov ice sheet degradation was created оn the basis of geomorphologic and GIS analyses. The model was made for Chudsko-Pskovskaya lowland, for the Luga (Haanja) – Neva (Pandivere) stages. Frontal type of deglaciation was proved for lowland properly and the areal type – for surrounding uplands. Numerous evidences of specific glaciomorphologic complexes of marginal formations helped analyzing ice sheet dynamics. The absolute ages were calculated for Pskov (15000 – 15100 BP) and Remda phases (14400 – 14300 BP), both belonging to the Luga stage. Based on spatial analysis of coastal landforms within the Russian Federation, proglacial lake levels were determined. For the Pskov stage it was made for the first time.

Keywords

Ostashkov glaciation, deglaciation, proglacial lakes, glacier, dead ice, complexes of marginal formations, limnoglacial plains, Chudsko-Pskovskaya lowland

About the Author

N. V. Karpukhina

Geographical Department, Moscow State University, Moscow
Russian Federation

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Review

For citations:

Karpukhina N.V. CHARACTERISTIC FEATURES OF THE OSTASHKOV ICE SHEET DEGRADATION WITHIN CHUDSKO-PSKOVSKAYA LOWLAND. Geomorfologiya. 2013;(4):38-47. (In Russ.) https://doi.org/10.15356/0435-4281-2013-4-38-47