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Sedimentological and cyclostratigraphic analysis of upper part of the kartal formation (sw of Ankara)
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index.pdf
Date
2008
Author
Aghayev, Rufat
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The Montian Kartal Formation lies in the south-west of Ankara region and overlies the Upper Cretaceous Beyobasi Formation and is overlain by Thanetian Kırkkavak Formation conformably in the studied region (Kayabası village, NW of town of Haymana). A 283 m stratigraphic section, which is mainly composed of an alternation siliciclastic and carbonate rocks has been measured in the Kartal Formation within the Haymana-Polatlı basin. The aim of this study is to carry out the sedimentological and cyclostratigraphical analyses of the upper part of the Kartal Formation within Haymana-Polatlı basin which represents a well developed cyclic pattern. In this study, detailed lithofacies analyses were performed and four different facies were recognized along the measured section: sandstones, limestones, mudrocks and conglomerates. Sedimentological analyses, such as modal, provenance, palaeocurrent, grain-size and grain parameters were also performed and their relation with the depositional environment and change in depositional conditions were discussed. Interpretations of the depositional environment revealed that the deposition occurred by low sinuosity rivers and waves. Additional environmental interpretations suggested that the sediments were deposited in shallow marine and/or coastal (beach) environments. High resolution cyclostratigraphy studies based on meter scale cyclic and rhytmic occurrences of lithofacies along the measured section were performed. The whole section, which is 283 m thick, was divided into large-scale hierarchy-cycles which comprise smaller-scale fining upward and deepening upward cyclic and rhythmic beds.
Subject Keywords
Geological engineering.
,
Sedimentology.
URI
http://etd.lib.metu.edu.tr/upload/12610121/index.pdf
https://hdl.handle.net/11511/18062
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Graduate School of Natural and Applied Sciences, Thesis