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The North Dvina river delta development over the Holocene: geochronology and palaeoenvironment

Zaretskaya N. E., Shevchenko N. V., Simakova A. N., Sulerzhitsky L. D.

Geochronometria

2011

Vol. 38, no. 2

116-127

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 oth-er 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.