Cosmogenic Cl-36 glacial chronologies of the Late Quaternary glaciers on Mount Geyikdag in the Eastern Mediterranean


Sankaya M. A. , Ciner A., Yıldırım C.

QUATERNARY GEOCHRONOLOGY, cilt.39, ss.189-204, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.quageo.2017.03.003
  • Dergi Adı: QUATERNARY GEOCHRONOLOGY
  • Sayfa Sayıları: ss.189-204

Özet

We report the timing of glaciations during the Late Quaternary in the central Taurus Mountains of Turkey in the Eastern Mediterranean. Forty moraine samples from three glacial valleys on Mount Geyikdag (36.53 degrees N, 32.10 degrees E, 2877 m), near the Eastern Mediterranean coast of Turkey, were dated with in-situ cosmogenic Cl-36. These glacial valleys are located on the southern flank of the mountain and were filled with few km long glaciers that terminated at elevations of about 1750 m above sea level. Three glacial retreats/advances were determined in this study. During the Last Glacial Maximum (LGM), glaciers reached their maximum positions at 20.6 +/- 0.6 ka ago (+/- 1 sigma). This date is in accordance with the timing of local maximum ice extent, represented by piedmont glaciers in the northern side of the mountain. Glaciers started to retreat after the LGM and shortly stabilized or re-advanced two times before they completely vanished out. The first stage ended before 13.7 +/- 0.8 ka ago during the Late-glacial. The last glaciation occurred during the Holocene and ended between 9.6 +/- 1.4 ka and 5.9 +/- 0.5 ka ago. Later, glaciers mostly vanished from the study area, but a few rock glaciers developed during the Late Holocene. Glacial chronologies of Mount Geyikdag are mostly comparable with the globally observed advances elsewhere. (C) 2017 Elsevier B.V. All rights reserved.