Foraminiferal biostratigraphy of Jurassic-cretaceous age carbonates surfacing at Eastern Taurus: Dede Mountain (Kayseri/Turkey) and Tufanbeyli Region (Adana/Turkey)

Abstract

At Eastern Taurid, the age of Carbonate rocks, outcroping at soutgh of Yahyali (Kayseri) had been defined as Jurassic-Cretaceous age in previous studies. The unit wich had been named as Koroglutepesi Limestones in previous studies, outcroping also Eastern Tufanbeyli (Adana) at Gumelek Hill, arround Kayapinar and Igdebel villages. Foraminiferal biostratigraphy of The sedimantery rocks surfacing at these locationes, hase been defined. Have been get three measured stratigraphic section in Tufanbeyli region. These are Gumelek Hill, Igdebel Village and Kayapinar Measured Stratigraphic Columnar Sections. in Gumelek Hill measured stratigraphic columnar section, Kurnubia palastiniensis, Orbitolina taxana, Rumanoloculina robusta, Siphovalvulina veriablis, Valvulina lugoni, Conicokurnibia sp., Orbitolina sp., Valvulina sp. foraminifera and Actinoporella podolica algea fossilles have been found. And according these fossiles age of unite has been described as Middle -Late Juassic-Early Cretaceous. Kurnubia palastiniensis, Siphovalvulina veriablis, foraminifera and Clypeina jurassica algea fossiles has been found at Igdebelkoyu measured stratigraphic columnar section. Then The age of the unite described as Late Juassic (Mahn) According these fossiles. At Kayapinar measured stratigraphic columnar section, Cuneolina parva, Decussoloculina mirceai, Quinqueloculina podlubiensis, Kurnubia palastiniensis, Meyendolfina batonica, Nezzazatinella picardi, Nummunoloculina heimi, Orbitolina (Mesoorbitolina) texana, Rumanoloculina robusta, Spiriloculina cretacea, Valvulina lugoni, Bolivinopsis sp., Orbitolina sp., Glomospira sp., Glomospirella sp. Foraminifera fossils has been determined. These fossiles are given age of unite as Middle-Late Juassic-Early Cretaceous.

At Dededagi measured stratigraphic columnar section, Decussoloculina mirceai, Dictyoconus cayeuxi, Nummunoloculina heimi, Nezzazatinella picardi, Nezazata simpleks, Orbitolina conica, Orbitolina (Conicorbitolina) gr. paenaconica, Rumanoloculina robusta, Orbitolina sp., Quinqueloculina sp., foraminifera and Actinoporella podolica, Salpingoporella dinarica algea fossils has been found and according these fossiles age of unite has been described as Late Juassic -Early Cretaceous. According these studies, age of the each carbonate unites are simillar. But battom and top levels of unites can't apear from each tectonostratigrafhic position.