Gümüşova (Adapazarı D'su) yöresindeki palojen yaşlı volkaniklastik epiklastik kayaçkarın sedimantolojik incelenmesi
Sedimentological investigation of paleogene aged of volcaniclastic and epiclastic rocks around gümüşova (E.Adapazarı)
- Tez No: 55337
- Danışmanlar: DOÇ.DR. ABDURRAHİM ŞAHBAZ
- Tez Türü: Yüksek Lisans
- Konular: Jeoloji Mühendisliği, Geological Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1996
- Dil: Türkçe
- Üniversite: Hacettepe Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 78
Özet
A ingilizce özet The study area located in Gümüşova at the border of Adapazan-Bolu and to 50 km east of Adapazarı covers an area of approximately 143km2 in sheets G25 bl,b2,b3,b4 of Adapazarı with a scale of 1/25000. Determining the sedimentologic characteristics in the study area of Kusuri formation with age of Late Paleocene-Eocene outcropted at western Pontides, the aim of this study is to investigate the depositional environments and sedimentary processes, to specify source rocks and provenance and to explain the sedimentologic development of the study area in Paleogene. For this purpose, Kusuri formation is studied in distinct four members according to rock types and lithological characteristics. Considering the stratigraphic position, Akçakoca member with the age of Late Paleocene-Early Eocene forms the bottom member of the Kusuri formation. Akçakoca member that consists of sandstone-shale alternations and has typical characteristics of middle-outer fan facies of submarine fan has a paraconformite contact relationship with the units of pre-Late Paleocene age. Akçakoca member is formed by the elastics fed from recycled orogenic provenance. The deep marine turbidit deposits of this member is overlied by Sürmeli member which consists of lithic tuff and tuff bressia with andesitic composition and volcaniclastic sandstone- siltstone. The lithic tuff and tuff bressia of Sürmeli member commonly observed in the study area consist of reworked pyroclastic deposits which are pyroclastic debris flow products, overlying volcaniclastic deposits which are turbidity current product. Raşitağa member is the third member of the Kusuri formation. Raşitağa member that is thinner than the other members consists of pyroclastic deposits. This member which composed of ashes that are product of explosive volcanism is characterized by crystal and vitric tuff. The last member of Kusuri formation is Hauplar member of middle Eocene age that consists of sandstone-claystone alternation. Haüplar member is deposited in a shallow marine environment. During the deposition, a storm activity occasionally took place and the storm processes controlled the sedimentation. Depending on the descent of Neotetis in the northern direction beneath Pontides in Late Cretaceous, accretionary prism and arc volcanism were developed on Pontides. This development brought about ridged forearc basin in the region which covers the study area. Starting from late Paleocene, Akçakoca member is deposited in deep sea environment as a result of material transfer by turbidity currents from accretionary prism to the south of the study area to the basin. In Eocene, the activity of Late Cretaceous arc volcanism on the accretionary prism to the southern of the study area is caused to the basin to be located between these two arc volcanism. The rocks which belong to Sürmeli, Raşitağa and Hatıplar member are deposited in the basin between these two arcs. Sürmeli and Raşitağa members are composed of materials coming from Eocene arc volcanism while Haüplar member has material from all the units outcroped before Lutetian.
Özet (Çeviri)
A ingilizce özet The study area located in Gümüşova at the border of Adapazan-Bolu and to 50 km east of Adapazarı covers an area of approximately 143km2 in sheets G25 bl,b2,b3,b4 of Adapazarı with a scale of 1/25000. Determining the sedimentologic characteristics in the study area of Kusuri formation with age of Late Paleocene-Eocene outcropted at western Pontides, the aim of this study is to investigate the depositional environments and sedimentary processes, to specify source rocks and provenance and to explain the sedimentologic development of the study area in Paleogene. For this purpose, Kusuri formation is studied in distinct four members according to rock types and lithological characteristics. Considering the stratigraphic position, Akçakoca member with the age of Late Paleocene-Early Eocene forms the bottom member of the Kusuri formation. Akçakoca member that consists of sandstone-shale alternations and has typical characteristics of middle-outer fan facies of submarine fan has a paraconformite contact relationship with the units of pre-Late Paleocene age. Akçakoca member is formed by the elastics fed from recycled orogenic provenance. The deep marine turbidit deposits of this member is overlied by Sürmeli member which consists of lithic tuff and tuff bressia with andesitic composition and volcaniclastic sandstone- siltstone. The lithic tuff and tuff bressia of Sürmeli member commonly observed in the study area consist of reworked pyroclastic deposits which are pyroclastic debris flow products, overlying volcaniclastic deposits which are turbidity current product. Raşitağa member is the third member of the Kusuri formation. Raşitağa member that is thinner than the other members consists of pyroclastic deposits. This member which composed of ashes that are product of explosive volcanism is characterized by crystal and vitric tuff. The last member of Kusuri formation is Hauplar member of middle Eocene age that consists of sandstone-claystone alternation. Haüplar member is deposited in a shallow marine environment. During the deposition, a storm activity occasionally took place and the storm processes controlled the sedimentation. Depending on the descent of Neotetis in the northern direction beneath Pontides in Late Cretaceous, accretionary prism and arc volcanism were developed on Pontides. This development brought about ridged forearc basin in the region which covers the study area. Starting from late Paleocene, Akçakoca member is deposited in deep sea environment as a result of material transfer by turbidity currents from accretionary prism to the south of the study area to the basin. In Eocene, the activity of Late Cretaceous arc volcanism on the accretionary prism to the southern of the study area is caused to the basin to be located between these two arc volcanism. The rocks which belong to Sürmeli, Raşitağa and Hatıplar member are deposited in the basin between these two arcs. Sürmeli and Raşitağa members are composed of materials coming from Eocene arc volcanism while Haüplar member has material from all the units outcroped before Lutetian.
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