Isotopic and palaeotemperature characteristics of the Southern Marmara Sea

Aliyev S., Sari A., Ergin M.

JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, cilt.60, sa.3, ss.293-301, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 3
  • Basım Tarihi: 2002
  • Dergi Adı: JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.293-301
  • Anahtar Kelimeler: stable isotopes, carbon and oxygen, palaeotemperatures, mollusc shells, Marmara Sea, LEVEL CHANGES, QUATERNARY
  • Ankara Üniversitesi Adresli: Evet

Özet

The samples used in this study are mollusc shells that were obtained from core sediments taken at 60 m water depths from the Southern Marmara Sea, close to the Kapidag Peninsula. The ages of samples ranged from Late Pleistocene to Early Holocene. In two cores, analysis were carried out on mollusc fossils for delta(18)O and delta(13)C isotopes. The delta(18)O and delta(13)C values of mollusc shells ranged between 0.20 parts per thousand and -3.0 parts per thousand and 0.08 parts per thousand and 0.81 parts per thousand, respectively. delta(18)O and delta(13)C display independent and different values that are inversely related with each other. The lowest delta(18)O values are associated with highest delta(13)C values. The variations in oxygen and carbon isotopic values are independent from each other and reflect changes in palaeogeographic environment. The varying isotopic temperature values between 13.0degreesC and 27.6degreesC proves changing palaeoenvironmental conditions in the basin. The isotopic temperature and delta(18)O and delta(13)C data for the Late Quaternary times (for W2-H L1) in the Marmara Sea are obtained in this study for the first time.