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Middle-late Asselian (Early Permian) fusulinid fauna from the post-Variscan cover in NW Anatolia (Turkey): Biostratigraphy and geological implications
Date
2010-03-01
Author
Okuyucu, Cengiz
Göncüoğlu, Mehmet Cemal
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The earliest autochthonous cover of the Variscan basement of the Sakarya Composite Terrane (SCT) in NW Anatolia is represented by basal conglomerates and limestones. The microfacies types of the limestones in ascending order are: (1) bioelastic grainstone/packstone, (2) fusulinid grainstone/packstone, (3) smaller foraminiferal grainstone/packstone, (4) Anthracoporella (dasycladale) grainstone/packstone. and (5) wackestones. Twenty-three species assignable to 15 genera of fusulinids were recovered from the studied materials of the Kadirler section; Quasifusulina guvenci nov. sp. and Pseudoschwagerina beedei; magna nov. subsp. are created. Rugosofusulinids, sphaeroschwagerinids, pseudoschwagerinids, occidentoschwagerinids, pseudochusenellids, quasifusulinids, rugosochusenellids and paraschwagerinids are the main faunal elements of the succession, which shows two distinct faunal intervals. Eoschubertella, Schubertella, Biwaella?, Rugosofusulina stabilis group, and Pseudochusenella correspond to the first interval at the base; the second interval is characterized by the species of Sphaeroschwagerina, Pseudoschwagerina, Occidentoschwagerina, the Rugosafusulina latispiralis group, and diverse quasifusulinids. A biostratigraphic correlation shows that the Kadirler section in the SCT in NW Anatolia shares many common species with Central Asia in the East but especially with the Carnic Alps and Karavanke Mountains in the West. The new data suggest that the close faunal relationship in the Late Carboniferous between eastern Alps, Ural Mountains, NW Turkey and Central Asia also continued during the Asselian. (C) 2010 Elsevier Masson SAS. All rights reserved.
Subject Keywords
Biostratigraphy
,
Fusulinids
,
Asselian
,
Early Permian
,
Paleogeography
,
Turkey
URI
https://hdl.handle.net/11511/31641
Journal
GEOBIOS
DOI
https://doi.org/10.1016/j.geobios.2009.09.006
Collections
Graduate School of Natural and Applied Sciences, Article