Foraminiferal fauna of some Carboniferous–Permian blocks from the Mersin Mélange (Central Taurus, Southern Turkey): A correlation with carbonate successions in adjacent Tauride tectonic units

Date

2015-08-15

Author

Okuyucu, Cengiz
Tekin, Uğur Kağan
Bedi, Yavuz
Göncüoğlu, Mehmet Cemal
Sayıt, Kaan
Uzunçimen Keçeli, Seda

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The Mersin Complex from Southern Turkey is composed of two different tectonic units as; the Mersin Mélange, and the ophiolitic series with a metamorphic sole. The Mersin Mélange is composed of blocks of various origins with different stratigraphic ranges within a Late Cretaceous matrix. The foraminiferal contents of three limestone blocks of the Carboniferous and Permian age from the Mersin Mélange have been studied to evaluate their origin, to determine their total stratigraphic range and to correlate them with autochthonous successions in the adjacent Tauride units. The Keven Block, one of the well-exposed outcrops in the study area, is represented by a typical transgressive sequence of 12 m total thickness. Thirteen samples have been studied throughout the section for their fossil content. Some clasts from the basal part of the Keven Block include Nonpseudofusulina karapetovi and Pseudofusulinoides ex gr. postpusillus assemblage. Rugosofusulina stabilis, Grovesella staffelloides, Schubertella paramelonica, Spireitlina conspecta and Hemidiscus carnicus are the main constituents of the overlying part. The age of the clasts and overlying succession in the block is the Early Permian. The other block, Keven-1 block, is composed of a 2 m thick carbonate succession. One of the two samples taken from the upper part of the block is very productive for the foraminiferal fauna and comprises mainly Bashkirian (probably Early Bashkirian) fusulinid assemblage as Varistaffella ziganica and Plectostaffella varvariensis. The Cingeypinarı block is about 64 m in thickness and mainly composed of a carbonate-sandstone alternation with a carbonate-dominated basal part. The base and the mainly carbonaceous parts of the block include rich but poorly preserved fusulinid (Pseudofusulinoides? spp.) assemblage. The overlying units are rich in small foraminifera represented by Hemigordius permicus beitepicus, Nodosinelloides pinardae and Neohemigordius? sp. The determined fossil assemblage in this block indicates that its age is limited to the Early Permian. The Early Permian fossil assemblage of the studied blocks within the Mersin Mélange correlate with the coeval ones within the carbonate successions of the Aladağ Unit and its equivalents of the Tauride-Anatolide Platform or with those within the limestone blocks of the Karakaya Complex and the autochthonous cover of the Variscan basement of the Sakarya Composite Terrane in NW Turkey. Considering the faunal and floral assemblages, the source areas of the blocks may have been located relatively close to each other and were positioned on the same paleo-latitude. This may further suggest the presence of a common Early Permian carbonate platform on the Tauride and Sakarya terranes and the derivation of the limestone blocks in the Mersin Mélange from this platform. This study was funded by TUBITAK 112Y370.

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https://hdl.handle.net/11511/86900
https://kpfu.ru//staff_files/F102932714/2015__ICCP2015_ABSTRACT_VOLUME.pdf

Conference Name

XVIII International Congress on the Carboniferous and Permian, August 11–15 2015

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

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Citation Formats

C. Okuyucu, U. K. Tekin, Y. Bedi, M. C. Göncüoğlu, K. Sayıt, and S. Uzunçimen Keçeli, “Foraminiferal fauna of some Carboniferous–Permian blocks from the Mersin Mélange (Central Taurus, Southern Turkey): A correlation with carbonate successions in adjacent Tauride tectonic units ,” presented at the XVIII International Congress on the Carboniferous and Permian, August 11–15 2015, Kazan, Russia, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/86900.