Morphogenesis of Valkakimanka lagoon (Cape Billings, East Siberian Sea)

Abstract

Analysis of morphology of this most complicated coastal structure of the eastern Soviet Arctic showed that it is not an accumulative marine form, but a heterogeneous formation resulted from recent ingression into Iacustrine-alluvial plain. The lagoon's frame consists of relics of the continental Upper Pleistocene series, the inherited lagoon's forms are of the Holocene age, the marine built-up forms are not younger than 4000 years and have already been eroded for the last 1500 years (not more). Thus transgressions -have never exceeded the present sea level here.