Optical dating and sedimentary record from the terrace depositional profile of the Warta River (Central Poland)

Geochronometria

Piotr Moska¹  Grzegorz Adamiec¹  Juliusz Twardy²  Danuta Dzieduszyńska²  Joanna Petera-Zganiacz²  Piotr Kittel² 

[1] Silesian University of Technology;University of Lodz

关键词: palaeofloods;    Younger Dryas;    OSL;    sedimentological studies;   

DOI  :  10.2478/s13386-013-0173-y

学科分类：社会科学、人文和艺术（综合）

来源: Politechnika Slaska * Instytut Fizyki

【 摘 要 】

Results of OSL dating and sedimentary studies from the profile of the low alluvial terrace of the middle Warta River are presented. The samples were dated using the single-aliquot regenera-tive method. Dating was used to establish a timing of the Weichselian Late Glacial events in the river valley environment. Stable conditions on the floodplain are expressed by the deposition of organic-rich series radiocarbon dated at 12 900-12 600 cal BP and 11 600-10 770 cal BP. Samples for OSL dating were collected from the mineral material deposited during the intensification of flood events during the Weichselian decline. The results obtained for the alluvia range from 12.78 ± 0.62 ka b2k to 14.33 ± 0.74 ka b2k. Sedimentological criteria allowed to distinguish between particular flood events. Overestimation of OSL ages is probably a result of rapidity of environmental changes in that time.

【 授权许可】

Unknown