Some biostratigraphic and paleogeo-graphic observations on the Cretaceous/Tertiary boundary in the Haymana Polatli Region (Central Turkey)

Sirel, Ercüment; Dağer, Zeki; Sözeri, Biler

doi:10.1007/bfb0010223

Cited by 17 publications

(7 citation statements)

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“…The species of Pseudolacazina found in the Alveolina elongata biozone assigned to the Middle Eocene in northeastern Yugoslavia and northern Spain (Caus, 1979) are restricted to the Thanetian in Turkey (Sirel, 1981;Sirel et al, 1986). Discocyclina seunesi occurs in the Thanetian of the Southern Pyrenean Basin within the Alveolina (Glomalveolina) primaeva biozone and has been considered indicative of an open platform environment (Tambareau, 1972;IGCP 286, 1990).…”

Section: Comparison With Other Regions Of the Tethys Realmmentioning

confidence: 98%

Laffitteina from the Maastrichtian-Paleocene shallow marine carbonate successions of the Eastern Pontides (NE Turkey): biozonation and microfacies

İnan

Taşlı

İnan

2005

Journal of Asian Earth Sciences

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Section: Comparison With Other Regions Of the Tethys Realmmentioning

confidence: 98%

Laffitteina from the Maastrichtian-Paleocene shallow marine carbonate successions of the Eastern Pontides (NE Turkey): biozonation and microfacies

İnan

Taşlı

İnan

2005

Journal of Asian Earth Sciences

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“…They suggested a single source area with two different lithologies and provided evidence of a N to S feeding direction, and an E to W palaeoflow direction was determined by Çetin et al (1986) for the middle Eocene units. Sirel (1975), Ünalan et al (1976), Sirel and Gündüz (1976), Meriç and Görür (1981), Sirel et al (1986), Dellaloğlu and Aksu (1991), Özcan and Altıner (1997), Özcan et al (2001), and Özcan (2002) performed palaeontology studies on the Upper Cretaceous to Eocene basin fill of the Haymana Basin. Görür et al (1984Görür et al ( , 1998, Koçyiğit et al (1988Koçyiğit et al ( , 2003, and Koçyiğit (1991) suggested fore-arc type development for the evolution of the basin by comparing the tectonic position and stratigraphic record of the Haymana Basin with other Central Anatolian basins.…”

Section: Geological Setting and Stratigraphymentioning

confidence: 99%

“…2). Sedimentation was controlled by turbidity currents with at least two sets of thick, conglomerate, conglomerate-sandstone, and sandstone-shale alternation deposits at the base of fining-upward Ünalan et al (1976 andSirel et al (1986). Fm-Formation sequences possibly resulting from abrupt activities of submarine fans.…”

Section: Introductionmentioning

confidence: 99%

Reservoir potential of the Haymana Formation submarine-fan sandstones in the Haymana Basin of Turkey

Geçer

Büyükutku

Caetano

et al. 2019

J Petrol Explor Prod Technol

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Sedimentological and petrographic studies of the Haymana Formation sandstones identify a submarine fan in the Haymana Basin. This study is confined to outcrop samples from the submarine-fan sandstones (the L1, L2, and L3 sections) and focuses on documentation of the petrographic characteristics of and depositional controls on reservoir properties of the Haymana Formation sandstones. Analysis of the lithology, texture, sedimentary structure, and petrography of the outcrop samples allows separation of the Haymana Formation sandstones into three distinct lithofacies, A, B, and C. Lithofacies A sandstones exhibit medium-coarse grain sizes (0.4-0.6 mm), moderate-good sorting, and subrounded grains. Lithofacies B sandstones exhibit fine grain sizes (0.2 mm), moderate sorting, and subrounded-subangular grains. Lithofacies C sandstones exhibit very fine grain sizes (0.112 mm) and nonreservoir facies. The main aim of this study is to document the diagenetic history and reservoir quality of the Haymana Formation sandstones. Lithofacies A has the best permeability, ranging from 80 to 120 mD, which can be related to the large grain size, the presence of cross-bedding, small amount of authigenic clays or cements in the pore throats, and enlarged pore apertures. In contrast, Lithofacies B sandstones contain variable yet small pore and pore-throat sizes, which are affected by abundant pore-filling authigenic clays, small grain sizes, and no dissolution. The permeability of the Lithofacies B sandstone ranges from 16 to 35 mD, which is lower than that of the Lithofacies A sandstone. Additionally, the Lithofacies B sandstones have small median pore-throat sizes (mean = 1.52 μm) and low porosities (average 4-6%), and the Lithofacies A sandstones have large pore-throat sizes (mean = 2.06-3 μm) and high porosities (average 20-25%), with most pore throats (50% or more) ranging between 1 and 4 μm. According to these data, the Lithofacies A sandstones show good reservoir characterisation. To date, significant hydrocarbon deposits have not been discovered in the Haymana Formation sandstones, although intensive exploratory work towards this end has been carried out in the Haymana Basin. According to this study, the proximal sandstones of the submarine-fan complex of the Haymana Formation may contain high-potential reservoirs in the Haymana Basin. In the basin, hydrocarbon is sourced from deep zones and may be capped by the proximal part of the Haymana Formation sandstones. According to this study, the Lithofacies B sandstones of the Haymana Formation are not suitable as diagenetic traps for hydrocarbon exploration in the Haymana Basin. However, the Lithofacies A sandstones may be expected to have the highest exploration success.

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“…1). The Çayraz Formation, with a rich fossil content, has been the subject of many paleontological studies to date (Sirel and Gündüz, 1976;Ünalan et al, 1976;Toker, 1979Toker, , 1980Sirel et al, 1986;€ Ozcan, 2002;€ Ozcan et al, 2007;and Sirel, 2010). No detailed paleontological study has been performed for the Altıpınar Formation, however, the relevant unit has been stratigraphically interpreted by Atabey et al (1988).…”

Section: Introductionmentioning

confidence: 97%

Eocene benthic foraminiferal assemblages from Central Anatolia (Turkey): Biostratigraphy, stable isotope data, paleoenvironmental and paleontological interpretations

Dinçer

2016

Journal of African Earth Sciences

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Some biostratigraphic and paleogeo-graphic observations on the Cretaceous/Tertiary boundary in the Haymana Polatli Region (Central Turkey)

Cited by 17 publications

References 0 publications

Laffitteina from the Maastrichtian-Paleocene shallow marine carbonate successions of the Eastern Pontides (NE Turkey): biozonation and microfacies

Laffitteina from the Maastrichtian-Paleocene shallow marine carbonate successions of the Eastern Pontides (NE Turkey): biozonation and microfacies

Reservoir potential of the Haymana Formation submarine-fan sandstones in the Haymana Basin of Turkey

Eocene benthic foraminiferal assemblages from Central Anatolia (Turkey): Biostratigraphy, stable isotope data, paleoenvironmental and paleontological interpretations

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