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Full-Text Articles in Physical Sciences and Mathematics
Middle-Late Devonian Boundary Conodonts From Anarak And Sar-Ashk Sections, Centraliran, Hossein Gholamalian, Vachik Hairapetian, Mohammad Poosti
Middle-Late Devonian Boundary Conodonts From Anarak And Sar-Ashk Sections, Centraliran, Hossein Gholamalian, Vachik Hairapetian, Mohammad Poosti
Turkish Journal of Earth Sciences
The Middle/Late Devonian boundary is investigated based on twenty-four conodont species and subspecies from the Anarak and Sar-Ashk sections in the northwest and southeast of Central East Iran Microplate. The earliest Frasnian strata are defined by the first appearance of Ancyrodella rotundiloba pristina and can be correlated with the global stratotype in the Montagne Noir, South of France. The Late Givetian - Early Frasnian carbonates of the Bahram Formation in the Sar-Ashk section transgressively overlie the sandstones of the Padeha Formation, whereas the coeval interval in the Anarak section composes the middle part of the Bahram Formation. Conodont biostratigraphy of …
A Pelagic Upper Devonian Sequence In Sarıyer, İstanbul, Aral I. Okay, Ayşe Özdemi̇r, Ni̇lgün Okay
A Pelagic Upper Devonian Sequence In Sarıyer, İstanbul, Aral I. Okay, Ayşe Özdemi̇r, Ni̇lgün Okay
Turkish Journal of Earth Sciences
The Palaeozoic sequence in the İstanbul region is made up of a continuous transgressive sedimentary series extending from Ordovician continental clastic rocks to Lower Carboniferous turbidites. The middle part of this sequence consists predominantly of carbonates ranging from shallow marine Upper Silurian limestones to latest Devonian to earliest Carboniferous deep marine limestones and shales. Here, we describe a new Upper Devonian deep marine limestone-siltstone section from the Sarıyer region in the European part of İstanbul. The 37-m thick section located in the campus of the İstanbul Technical University consists at the base of dark micritic limestones interbedded with carbonate-rich siltstones, …
Higher-Resolution Biostratigraphy For The Kinta Limestone And An Implication For Continuous Sedimentation In The Paleo-Tethys, Western Belt Of Peninsular Malaysia, Haylay Tsegab Gebretsadik, Chow Weng Sum, Gatovsky A.Yuriy, Aaron W. Hunter, Jasmi Ab Talib, Solomon Kassa
Higher-Resolution Biostratigraphy For The Kinta Limestone And An Implication For Continuous Sedimentation In The Paleo-Tethys, Western Belt Of Peninsular Malaysia, Haylay Tsegab Gebretsadik, Chow Weng Sum, Gatovsky A.Yuriy, Aaron W. Hunter, Jasmi Ab Talib, Solomon Kassa
Turkish Journal of Earth Sciences
The paleogeography of the juxtaposed Southeast Asian terranes, derived from the northeastern margins of Gondwana during the Carboniferous to Triassic, resulted in complex basin evolution with massive carbonate deposition on the margins of the Paleo-Tethys. Due to the inherited structural and tectonothermal complexities, discovery of diagnostic microfossils from these carbonates has been problematic. This is particularly the case for the Kinta Limestone, a massive Paleozoic carbonate succession that covers most of the Kinta Valley in the central part of the Western Belt of Peninsular Malaysia. Owing to the complex structural and igneous events, as well as extensive diagenetic alterations, establishing …
A New Pelagic Conodont Taxon Of The Central Pontides (Turkey), Ali̇ Murat Kiliç
A New Pelagic Conodont Taxon Of The Central Pontides (Turkey), Ali̇ Murat Kiliç
Turkish Journal of Earth Sciences
The Hallstatt-type limestones in the Central Pontides yield abundant conodonts of the genus Gladigondolella ranging throughout the entire studied sequence and indicating Anisian to Early Carnian ages. Gladigondolella okayi n. sp. is described.
Late Devonian Conodont Fauna Of The Gümüşali Formation, The Eastern Taurides, Turke, Şenol Çapkinoğlu, İsmet Gedi̇k
Late Devonian Conodont Fauna Of The Gümüşali Formation, The Eastern Taurides, Turke, Şenol Çapkinoğlu, İsmet Gedi̇k
Turkish Journal of Earth Sciences
The Late Devonian Gümüşali formation of the eastern Taurides is a terrigenous-carbonate rock sequence about 600 m thick, consisting mainly of quartz sandstone, quartz siltstone, shale, and carbonate rocks. Palaeontologic and sedimentologic data mainly indicate a shallow subtidal depositional environment. This sequence generally represents the shallow-water polygnathid-icriodid biofacies, and contains conodont faunas that range from the Upper falsiovalis Zone into the Upper praesulcata Zone. However, they do not correlate well to the Late Devonian standard conodont zonation because of the lack of zonally diagnostic species and the irregular vertical distributions of the present taxa. Herein, 54 taxa belonging to nine …
Late Devonian (Famennian) Conodonts From Denizliköyü, Gebze, Kocaeli, Northwestern Turkey, Şenol Çapkinoğlu
Late Devonian (Famennian) Conodonts From Denizliköyü, Gebze, Kocaeli, Northwestern Turkey, Şenol Çapkinoğlu
Turkish Journal of Earth Sciences
Late Devonian (Famennian) conodont faunas have been described from two incomplete stratigraphic sections (GD and GB) of the Ayineburnu member of the Tuzla formation, Denizliköyü, Gebze, Kocaeli, northwestern Turkey. The section GD comprises the Lower and Middle expansa Zones, and the section GB contains the Middle and Upper expansa Zones. Zonal indices for the Middle expansa Zone are identified in the section GB, whereas this zone is recognized on the basis of other key taxa in the section GD. Also, a new species of the Genus Branmehla, Branmehla gediki n.sp. is described from the section GD.