Lithostratigraphic and geochronological framework for the paleoenvironmental reconstruction of the last similar to 36 ka cal BP from a sediment record from Lake Iznik (NW Turkey)


Roeser P. A. , FRANZ S. O. , LITT T., ULGEN U. B. , HILGERS A., WULF S., ...Daha Fazla

QUATERNARY INTERNATIONAL, cilt.274, ss.73-87, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 274
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.quaint.2012.06.006
  • Dergi Adı: QUATERNARY INTERNATIONAL
  • Sayfa Sayıları: ss.73-87

Özet

New sediment cores were recovered from two sites in the central part of Lake Iznik with the overall aim of reconstructing past environmental conditions of the Marmara region. The composite profile presented here, IZN09/LC2&LC3, encompasses the late Pleistocene to Holocene transition (c. 36 ka cal BP) which is the longest lacustrine record in this region obtained to date. A lithostratigraphical and geochronological framework builds the basis to establish a composite section for first inferences on the paleo lake Iznik. The recovered sedimentary record was divided into five stratigraphic units which can be correlated between the different coring locations. The proposed age-depth model is based on eleven C-14 dates (eight radiocarbon-dated levels) and two tephra layers, supported by three OSL ages. The modeled age distribution of the Ca/Ti ratio and magnetic susceptibility express variations in the carbonate accumulation in balance with clastic sediment input.