The North Dvina river delta development over the Holocene: Geochronology and palaeoenvironment |
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Authors: | Nataliya E. Zaretskaya Nataliya V. Shevchenko Alexandra N. Simakova Leopold D. Sulerzhitsky |
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Affiliation: | 1.Geological Institute of Russian Academy of Sciences,Moscow,Russia;2.Geography Faculty,Moscow State University n.a. M.V. Lomonosov,Vorobiovy Gory, Moscow,Russia |
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Abstract: | In this paper, a detailed overview of the Holocene evolution of the North Dvina river (ND) delta (southern White Sea) is presented; it is based on radiocarbon dating, geomorphological and other field surveys, and plant macrofossil and palynological data. We have identified three main stages of the delta evolution: estuary erosional (Allerød — 5700 cal BC), lagoon or tidal-marsh (5700 cal BC — 3700 cal BC) and fan-delta accumulative (3700 cal BC — present). These stages are correlated with local climatic curves, sea level changes, glacioisostatic raise curve and Baltic Sea stages. A variety of landforms has been identified and dated within the delta. These results help to explain the spatial and temporal patterns in the prehistoric human occupation of this area. |
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