TY  - JOUR
TI  - Holocene sedimentary history of South Danamandıra Lake: a peatland in west of İstanbul, Çatalca Peninsula, NW Turkey
AB  - This study investigates the sedimentological evolution of the South Danamandıra Lake (SDL) lake in Çatalca Peninsula, 70 km west of İstanbul, using Georadar data and multiproxy analyses of five sediment cores. The lake is a 1.3-m deep, endorheic freshwater peatland, heavily colonised by common reed (Phragmites sp.). The multiproxy core investigations include a lithological core description and environmental magnetism, physical properties (gamma density and magnetic susceptibility), geochemical elemental, pollen and radiocarbon dating analyses. The lithological sequence in the lake consists of an upper peat unit and a lower sand-silt-clay unit. The peat unit is characterized by lower magnetic susceptibility, density and lithophile elements (K, Fe, Ti, and Zr) concentrations than the sand-silt-clay unit. Overall interpretation of the multiproxy data and the age-depth model suggest that the SDL was formed in a shallow depression of a fluvial channel at ca 10.9 cal kyr BP, and became a eutrophic lake at 8.1 cal kyr BP during the early Holocene warm period. Redox-sensitive element (i.e. Mn) distribution and mineral magnetic properties indicate that the peat unit has accumulated under anoxic conditions below a thin oxic surficial layer. Increase in the Taraxacum, Asteraceae, and Poaceae pollen percentages, together with high siliciclastic inputs in the lake, indicate that anthropogenic influence in the area started at 5.4 cal kyr BP.
AU  - Yılmaz Dağdeviren, Rüya
AU  - KÜÇÜKDEMİRCİ, MELDA
AU  - KARAOZ, MUSTAFA OMER
AU  - yakupoğlu, nurettin
AU  - ACAR, DURSUN
AU  - GÜREL, Ali
AU  - Makaroglu, Özlem
AU  - KARLIOĞLU KILIÇ, Nurgül
AU  - Sahin Altun, Damla
AU  - Çağatay, M.Namık
AU  - Sabuncu, Asen
DO  - 10.55730/1300-0985.1809
PY  - 2022
JO  - Turkish Journal of Earth Sciences
VL  - 31
IS  - 4
SN  - 1300-0985
SP  - 410
EP  - 423
DB  - TRDizin
UR  - http://search/yayin/detay/1142301
ER  -