Evidence from the Neva River Valley, Russia, of the Holocene history of Lake Ladoga
Abstract
Two new sections have been discovered in the River Neva Valley, which connects Lake Ladoga - the largest lake in Europe - with the Gulf of Finland of the Baltic Sea. The Nevskij Lesopark (Parkland) section is in the lower part of the River Neva, and the Nevskij Pjatachok section at the river head. Both sections represent peat sediments covered by sands of the Lake Ladoga transgression. On the basis of the radiocarbon dates, as well as pollen and diatom analyses of the new sections, the River Neva was formed at c. 2800-3000 yr. BP., and the level of Lake Ladoga was eroded down to its present level at 2400 yr. B.P. These results support previous ideas that the connection between Lake Ladoga and the Gulf of Finland opened as a result of the last great rise of the lake level, which was named the 'Ladoga transgression'. The evidence from the River Neva also confirms that there was no connection in this area between the Baltic Sea and Lake Ladoga at the time of the Ancylus Lake, because of the existence of uninterrupted peat deposition from Preboreal time.
Published
Issue
Section
License
Authors who publish with Fennia agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. The license of the published metadata is Creative Commons CC0 1.0 Universal (CC0 1.0).
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a doctoral dissertation or book compilation), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
.png)



