Paleogeographic sedimentation settings in the northern Baltic Sea |
| |
| Authors: | E S Trimonis E M Emelyanov G Vaikutene |
| |
| Institution: | 1. Vilnius University, Vilnius, Lithuania
2. Atlantic Branch, Shirshov Institute of Oceanology, Russian Academy of Sciences, Kaliningrad, Russia
|
| |
| Abstract: | The grain-size and chemical composition of the bottom sediments and their diatom assemblages from the northern Baltic Sea is discussed. Characteristic layers are distinguished based on the lithostratgraphy and sediment core correlation, which reflect the transition from the lacustrine to marine sedimentation settings during the initial Holocene. Sediment cores demonstrate lateral variations in the sedimentation patterns during the marine (Yoldia Sea), the lacustrine (Ancylus Lake), and the subsequent marine (Littorina Sea) stages: first two stages were characterized by the clay deposition, while the latter one featured accumulation of silty-clayey and clayey muds in bottom depressions. Sea-level fluctuations and corresponding environmental changes are recorded in microlaminated sequences, in particular, sapropelic muds. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
