Lake Aygir (Eastern Anatolia, Turkey) palynology of basel sediments

This thesis work was performed at the Lake Aygır is located in north of the Lake Van and southern part of the Süphan volcano. This thesis involves that stratigraphical analyses of six core samples were taken from bottom deposist of the Lake Aygır using gravity corer. In addition three of these six core samples were investigated palynological and radiocarbon dating method (Carbon 14) were applied to these samples. Lithologically core samples include of in clay-silt, sand, gravel fossiliferous levels and plant remains. However, core samples include rhythmic sediments, layer and strutuces. Towards the end of Late Pleistocene, before present with regard to radiocarbon ages in the years of 16.346 ± 412 and 19.083 ± 217 water levels of the Lake Aygır were determined that two times fell dramatically and then rose again. According to the results of palynological investigations, core samples have include pollen, algae, fungal spores, mollusks and plant remains. Poaceae, Chenopodiaceae, Compositaea tubuliflorae-type Spergula, Rumex, Spergularia-type, Filipendula, Apiaceae, Cyperaceae, Brassicaceae, Caryophyllaceae, Hypericum, Rubiaceae pollen grains constitute the main elements of Grasses and herbs of the palaeoflora . Additionally, main elements of Trees and shrubs were cheracterized by Quercus, Pinus and Juglans. According to palynological data obtained from the samples, dominance the of steppe vegetation (mainly by Poaceae Chenopodiaceae, Compositaea) was determined in the study area and in the vicinity of the lake.