Akbaş, Melikan
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Akbas, Melikan
Akbaş, M.
Akbaş, M.
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makbas@ktun.edu.tr
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02.07. Department of Geological Engineering
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| Journal | Count |
|---|---|
| Micropaleontology | 2 |
| Geodiversitas | 1 |
| Geological Journal | 1 |
| JOURNAL OF PALEONTOLOGY | 1 |
| Konya Muhendislik Bilimleri Dergisi | 1 |
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Conference Object Hadim Napı Başkıriyen-moskoviyen Karbonatlarının Fusulinid Biyozonasyonu, Orta Toroslar, Güney Türkiye(2021) Akbaş, Melikan; Okuyucu, CengizHadim Napı Başkıriyen-Moskoviyen istifi nispeten eksiksizdir ve detaylı bir fusulinid biyozonasyonuna olanak sağlamaktadır. Bu doğrultuda Hadim Napı Başkıriyen-Moskoviyen istifi, bolluk ve çeşitliliği yüksek fusulinid topluluğuna sahip olan üç kesitte (Yassıpınar, Gölbelen ve Bademli) incelenmiştir. Yassıpınar ve Gölbelen kesitlerinde Başkıriyen istifi genel olarak orta tabakalı kumtaşları, orta-kalın tabakalı oolitik kireçtaşları ve ince-orta tabakalı fosilli kireçtaşlarını içerirken, Bademli kesitinde aynı aralık orta-kalın tabakalı dolomitlerle karakteristiktir. Bu üç kesitin Moskoviyen istifi ise baskın olarak orta-kalın tabakalı fosilli kireçtaşlarından oluşmaktadır. Çalışılan BaşkıriyenMoskoviyen aralığı sekiz ilk görünüm fusulinid biyozonuna bölünmüştür. Alttan üste doğru, Başkıriyen katı Plectostaffella jakhensis-Plectostaffella bogdanovkensis, Pseudostaffella antiqua-Pseudostaffella sofronizkyi, Staffellaeformes staffellaeformis-Staffellaeformes parva parva ve Tikhonovichiella tikhonovichi-Verella spicata zonlarına karşılık gelirken, Moskoviyen katı ise Aljutovella aljutovica-Solovievaia ovataovata, Aljutovella priscoidea-Eofusulina triangula, Fusulinella vozhgalensis devexaBeedeinaschellwieni ve Fusulinella bocki bocki zonlarına karşılık gelmektedir (Şekil 1). Hadim Napı'ndaki bu fusulinid zonları ve Başkıriyen-Moskoviyen istiflerinin karakteristik indeks türleri Donets Havzası, Güney Çin, Güney Urallar ve özellikle Rus Platformu'ndaki eşdeğer istiflerle iyi bir korelasyon göstermektedir.Article Citation - WoS: 3Citation - Scopus: 4Fusulinid Biostratigraphy of the Moscovian-Lower Kasimovian of Hadim Nappe, Central Taurides, Southern Turkey(Museum Natl Histoire Naturelle, 2022) Akbaş, Melikan; Okuyucu, CengizThe Hadim Nappe which is one of the allochthonous tectonic units in the Tauride Belt includes continuous stratigraphic successions from Middle(?)-Late Devonian to Late Cretaceous. The well exposed successions of the Moscovian to lower Kasimovian are selected for fusulinid biostratigraphy along three sections (Yassipinar, Golbelen and Bademli) in the Central Taurides. The Lower-Middle Pennsylvanian boundary was determined by the first appearance datum of the Aljutovella aljutovica (Rauzer-Chernousova, 1938) and Solovievaia ovata ovata (Rauzer-Chernousova, 1938). In this study, the Vereian, Kashirian, Podolskian and Myachkovian regional substages of the Moscovian stage were determined by Aljutovella aljutovica-Solovievaia ovata ovata, Aljutovella priscoidea (Rauzer-Chernousova, 1938), Eofusulina triangula (Rauzer-Chernousova & Belyaev in Rauzer-Chernousova, Belyaev & Reitlinger, 1936), Fusulinella vozhgalensis devexa Rauzer-Chernousova in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951, Beedeina schellwieni (Staff in Schellwien & Staff, 1912) and Fusulinella bocki bocki Moller, 1878 in ascending order. The base of the lower Kasimovian is represented by the occurrence of Quasifusulinoides Rauzer-Chernousova & Rozovskaya in Rauzer-Chernousova & Fursenko, 1959, Protriticites Putrya, 1948 and Montiparus Rozovskaya, 1948 taxa. A total of 106 fusulinid species belonging to 19 genera were determined. One genus and ten species are new: Aljutovella typica Akbas, n. sp., Beedeina minuta Akbas, n. sp., Beedeina tauridiana Akbas, n. sp., Praefusulinella guvenci Akbas, n. gen., n. sp., Praefusulinella okuyucui Akbas, n. gen., n. sp., Praefusulinella rhombiforma Akbas, n. gen., n. sp., Praefusulinella tekini Akbas, n. gen., n. sp., Fusulinella absoluta Akbas, n. sp., Fusulinella obtusa minuta Akbas, n. subsp. and Fusulinella propriaforma Akbas, n. sp. The taxonomic positions of some fusulinids species (e.g., Neostaffella larionovae polasnensis (Rauzer-Chernousova & Safonova in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951), Depratina chernovi (Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951), Solovievaia arta (Leontovich in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951) and Beedeina paradistenta (Safonova in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951) were revised. The fusulinid assemblages recovered in this study correlate well with the Russian Platform, Cantabrian Mountains, Central Iran, southern Urals, Donets Basin, and some other regions of the Tethyan Realm.Article Hadim Napı Alt-orta Vizeyen İstifinin Mikrofasiyes ve Biyofasiyes Özellikleri (orta Toroslar, Güney Türkiye)(2023) Akbaş, MelikanToroslar’daki allokton tektono-stratigrafik birimlerden biri olan Hadim Napı Orta(?)-Üst DevoniyenÜst Kretase sığ platform karbonatları ve kırıntılı kayaçlardan oluşan kesintisiz bir istife sahiptir. Hadim Napı’nın iyi yüzeylendiği Bademli stratigrafik kesiti alt-orta Vizeyen istifinin mikrofasiyes incelemeleri sonucunda İç Platform Kıyı, Sınırlı ve/veya Açık Deniz depolanma ortamlarını yansıtan yedi mikrofasiyes tanımlanmıştır. Bunlar; Biyoklastik Tanetaşı, Biyoklastik Tanetaşı-İstiftaşı, Kumlu Biyoklastik Tanetaşı, Kumlu Biyoklastik Tanetaşı-İstiftaşı, Biyoklastik Pelloidal Tanetaşı, Biyoklastik Vaketaşı ve Kumtaşı mikrofasiyesleridir. Tanımlanan mikrofasiyeslerin yapılan biyofasiyes incelemelerine göre genel olarak zengin bir çeşitlilik ve bolluk sunan foraminifer faunasına sahip olduğu görülmektedir. Genel olarak stabil bir depolanma ortamını işaret eden alt-orta Vizeyen karbonatlarındaki foraminifer faunasının depolanma ortamındaki ufak değişimlerden olumsuz olarak etkilendiği görülmektedir.Conference Object Hadim Napı Orta Pensilvaniyen (moskoviyen) Karbonatlarının Fusulin Faunası, Gb Seydişehir, Orta Toroslar, Türkiye(2021) Akbaş, Melikan; Okuyucu, CengizArticle New Data on the Early-Middle Viséan (mfz10-Mfz13) Foraminifers From the Hadim Nappe, Southern Turkey: Biostratigraphic Implications(Micropaleontology Press, 2024) Akbaş, M.The Hadim Nappe has a relatively complete succession from the Middle(?)–Upper Devonian to Upper Cretaceous in the Taurides. The Bademli section is one of the well exposed sections of the Hadim Nappe that is selected for detailed biostratigraphic investigations. It includes a continuous Viséan stratigraphic succession. In the Bademli section, rich and diverse Early–Middle Viséan foraminiferal assemblages were recovered, most of which were reported for the first time in Turkey. Four first occurrence biozones, which approximately correspond to the Zones MFZ10 to MFZ13 of the Belgium stratotype section, are identified based on the foraminiferal analysis of the Lower-Middle Viséan strata of the Bademli section that are Ammarchaediscus-Glomodiscus first occurrence zone, Uralodiscus rotundus first occurrence zone, Pojarkovella first occurrence zone and Endothyranopsis (Reitlingeropsis) intermedia-Endothyranopsis mosquensis first occurrence zone. © 2024, Micropaleontology Press. All rights reserved.Article Citation - WoS: 1Citation - Scopus: 1Fusulinid Biozonation of the Bashkirian-Moscovian Successions From the Hadim Nappe, Central Taurides, Southern Turkey(Springer Heidelberg, 2022) Akbaş, Melikan; Okuyucu, CengizA relatively complete succession of the Bashkirian to Moscovian rocks is exposed in the Hadim Nappe, central Taurides, where rich and diverse fusulinid assemblages have been analysed in three sections (Yassipinar, Golbelen and Bademli). The Bashkirian-Moscovian successions mainly consist of medium-bedded sandstones, medium-thick-bedded oolitic limestone and thin-medium bedded fossiliferous limestones with medium-thick-bedded dolomite levels (Bademli section). Eight first occurrence fusulinid biozones are identified in three sections in the Bashkirian to Moscovian strata. The Bashkirian Stage comprises in ascending order the Plectostaffella jakhensis-Plectostaffella bogdanovkensis, Pseudostaffella antiqua-Pseudostaffella sofronizkyi, Staffellaeformes staffellaeformis-Staffellaeformes parva parva, and Tikhonovichiella tikhonovichi-Verella spicata zones, the Moscovian Stage contains in ascending order the Aljutovella aljutovica-Solovievaia ovata ovata, Aljutovella priscoidea-Eofusulina triangula, Fusulinella vozhgalensis devexa-Beedeina schellwieni, and Fusulinella bocki bocki zones. These fusulinid zones, and their characteristic index species, allow to correlate the Bashkirian-Moscovian strata in the Hadim Nappe with coeval strata in the Donets Basin, southern China, southern Urals, and especially, with the Russian Platform.Conference Object Bashkirian/Moscovian Boundary Based on Fusulinid Foraminifera in Hadim Nappe Sections From the Tauride Belt, Turkey: a Review of Biostratigraphic Data(2021) Akbaş, MelikanThe Hadim Nappe which is one of the allochthonous unit in the Tauride Belt consists of carbonate dominated succession from the Middle(?)–Late Devonian to Late Cretaceous. The Paleozoic carbonate rocks of this Nappe are well-exposed and allow a detail biostratigraphic control for the boundary of the stage transitions. The description of the Bashkirian/Moscovian boundary which is one of the main topics of the Carboniferous stratigraphy is still controversial and has not a GSSP (Global Boundary Stratotype Section and Point). The main studies for the description of Bashkirian/Moscovian boundary are focused on some conodont lineages but also fusulinid foraminifera are good tools for this boundary. Based on the classical approaches for the Bashkirian/Moscovian boundary, the upper Bashkirian is represented by Tikhonovichiella tikhonovichi and Verella spicata and the base of Moscovian is characterized by Aljutovella aljutovica fusulinids in the Tethyan Realm. The Bashkirian/Moscovian boundary in Hadim Nappe is characterized by a very shallow marine carbonates and this boundary is determined by fusulinid foraminifera due to the absence of conodonts. According to the previous studies except some superficial ones carried out in eastern and central Taurides, the upper Bashkirian and lower Moscovian strata include typical marker fusulinid assemblages for the description of this boundary.Conference Object Oriented Thin Section Applications and Its Importance for Fusulinid Foraminifera Determination: “fusulinella Praecolaniae Safonova, 1951”(2023) Akbaş, MelikanThe occurrence of fusulinids within the Phylum Foraminifera is known form Late Devonian to Permian within the Paleozoic Era, and these are microorganisms that were extinct at the end of the Permian. Fusulinids are index fossils for this time interval due to their abundance, wide distribution, relatively rapid evolution and easy recognition. According to these index fossil features, fusulinids are commonly used in the construction of geological time charts, especially in determining the boundaries between stages and substages. Although fusulinids are mainly identifiable organisms, it can be difficult to distinguish some individuals from each other, especially at the species level. Examination of fusulinids embedded in rocks is carried out through thin sections made from the rocks. The specimens obtained from random thin sections of the rocks can present axial, equatorial, oblique, transverse and tangential views. In order to correctly identify fusulinids, only the axial view should be used among these sectional views. The axial section view is to accurately present all the internal structure necessary for the identification of a fusulinid specimens. In Addition, the length, diameter, length-diameter ratio and prolocus diameter of the fusulinid shell, which are very important in the species identification of fusulinids, can only be measured accurately on an ideal axial section. As an example of oriented thin section applications in fusulinids, the fusulinids of the Late Paleozoic (Moscovian) aged rocks in the Central Taurides were examined within the scope of this study. For this purpose, Fusulinella praecolaniae Safonova, 1951 was described based on its axial views obtained from oriented thin sections, and the problems of other section views obtained from random thin sections were also examined.Article Geometrical Classification of Folds in the Bozdağlar Massif (konya, Central Anatolia)(Konya Technical University, 2021) Akbaş, Melikan; Eren, YaşarIn this study, it is aimed to make geometrically classification and find formation mechanism of mesoscopic folds of that are occur in Bozdağlar Massif (Northern Konya), and to compare them. In the context of the study, nearly a hundred mesoscopic folds which are developed on metamorphic rocks were analysed in the Altınekin, Meram-Dereköy and Sarayönü regions. The folds are classified based on the dip isogons and interlimb angles. The orthogonal thickness graphs of folds were constructed, and the flattening ratios were calculated. According to the geometrical classification of the folds it is detected that the flattened parallel folds (Class 1C) are the dominant fold type in the deformed rocks of the Bozdağlar Massif, and the folds in the competent rocks are generally represented by the Class 1C, whereas the folds of intervening incompetent rocks are characterized by Class 2 and Class 3. The Flattening ratios ( ) of Class 1C folds of Altınekin area are 0.4-0.8 for competent rocks and 0.3-0.8 for incompetent rocks. In the Meram-Dereköy area these ratio ( ) vary between 0.5 to 0.8 for folds in the competent rocks. The Class 1C folds that are observed in the vicinity of the Sarayönü area show 0.7 to 0.9 flattening value ( ). According to the Fleuty classification, it was determined that in accordance with flattening rates, folds developed as open, narrow and tight folds in all three regions, except only open folds did not develop in the Meram-Dereköy region.Article Hadim Napı Alt-orta Vizeyen İstifinin Mikrofasiyes ve Biyofasiyes Özellikleri (orta Toroslar, Güney Türkiye)(2023) Akbaş, MelikanToroslar’daki allokton tektono-stratigrafik birimlerden biri olan Hadim Napı Orta(?)-Üst Devoniyen-Üst Kretase sığ platform karbonatları ve kırıntılı kayaçlardan oluşan kesintisiz bir istife sahiptir. Hadim Napı’nın iyi yüzeylendiği Bademli stratigrafik kesiti alt-orta Vizeyen istifinin mikrofasiyes incelemeleri sonucunda İç Platform Kıyı, Sınırlı ve/veya Açık Deniz depolanma ortamlarını yansıtan yedi mikrofasiyes tanımlanmıştır. Bunlar; Biyoklastik Tanetaşı, Biyoklastik Tanetaşı-İstiftaşı, Kumlu Biyoklastik Tanetaşı, Kumlu Biyoklastik Tanetaşı-İstiftaşı, Biyoklastik Pelloidal Tanetaşı, Biyoklastik Vaketaşı ve Kumtaşı mikrofasiyesleridir. Tanımlanan mikrofasiyeslerin yapılan biyofasiyes incelemelerine göre genel olarak zengin bir çeşitlilik ve bolluk sunan foraminifer faunasına sahip olduğu görülmektedir. Genel olarak stabil bir depolanma ortamını işaret eden alt-orta Vizeyen karbonatlarındaki foraminifer faunasının depolanma ortamındaki ufak değişimlerden olumsuz olarak etkilendiği görülmektedir.
