Famennian ostracods from the Istanbul Zone (Gebze, Kocaeli, NW Turkey) and their paleogeographical relations

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NAZİK A., ÇAPKINOĞLU Ş., Seker E.

GEOLOGICA CARPATHICA, cilt.63, sa.5, ss.355-363, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 63 Sayı: 5
  • Basım Tarihi: 2012
  • Doi Numarası: 10.2478/v10096-012-0028-0
  • Dergi Adı: GEOLOGICA CARPATHICA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.355-363
  • Anahtar Kelimeler: Ostracods, conodonts, Famennian, Istanbul Zone, NW Turkey, DEVONIAN-CARBONIFEROUS BOUNDARY, STRATIGRAPHY, CONODONTS, MIDDLE
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Famennian (Late Devonian) ostracods of the Thuringian Mega-Assemblage were recovered for the first time from three incomplete sections of the Ayineburnu Member of the Buyukada Formation in the Denizlikoy area (Gebze, NW Turkey), which were sampled for conodonts. Conodont faunas define an interval extending from the Upper rhomboidea? or Lower marginifera Zone into the Middle expansa Zone of the standard Upper Devonian conodont zonation. The ostracod faunas found here consist of species mainly with thin-walls, long spines and often smooth surfaces such as Rectonaria, Tricornina, Orthonaria, Triplacera, Beckerhealdia, Timorhealdia, Bohemina, Paraberounella and Acratia. These taxa indicate faunal relationship with Thuringia and the Rhenish Massif in Germany, the Cantabrian Mountains and Pyrenees in Spain, Holy Cross Mountains in Poland, North Africa and China.

Abstract: Famennian (Late Devonian) ostracods of the Thuringian Mega-Assemblage were recovered for the first time from three incomplete sections of the Ayineburnu Member of the Büyükada Formation in the Denizliköy area (Gebze, NW Turkey), which were sampled for conodonts. Conodont faunas define an interval extending from the Upper rhomboidea? or Lower marginifera Zone into the Middle expansa Zone of the standard Upper Devonian conodont zonation. The ostracod faunas found here consist of species mainly with thin-walls, long spines and often smooth surfaces such as Rectonaria, Tricornina, Orthonaria, Triplacera, Beckerhealdia, Timorhealdia, Bohemina, Paraberounella and Acratia. These taxa indicate faunal relationship with Thuringia and the Rhenish Massif in Germany, the Cantabrian Mountains and Pyrenees in Spain, Holy Cross Mountains in Poland, North Africa and China.

Keywords: Ostracods, conodonts, Famennian, Istanbul Zone, NW Turkey