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In: Geologica Carpathica, vol. 64, no. 4

Yavuz Bedi̇ - Emil Vasilev - Christo Dabovski - Ali̇ Ergen - Cengi̇z Okuyucu - Adi̇l Doğan - U. Kağan Teki̇n - Daria Ivanova - Iliana Boncheva - Iskra Lakova - Valeri Sachanski - İsmai̇l Kuşcu - Ercan Tuncay - D. Gülnur Demiray - Havva Soycan - M. Cemal Göncüoğlu

Details:

Year, pages: 2013, 255 - 277

Language: eng

Keywords:

NW Turkey, SE Bulgaria, Istranca Crystalline Complex, stratigraphy, nappes

About article:

The Istranca Crystalline Complex in NW Anatolia and SE Bulgaria includes structural units that differ in lithostratigraphy, metamorphism, age and structural position. They are collectively named as the “Istranca nappes” comprising from bottom to top the Sarpdere, Mahyadağ and Doğanköy Nappes. The Sarpdere Nappe consists of Lower Triassic arkosic metasandstones with slate interlayers, followed by Middle to Upper Triassic carbonates and an alternation of Upper Triassic clastics and carbonates. The Mahyadağ Nappe comprises a low-grade metamorphic Late Paleozoic–Triassic carbonate-siliciclastic sedimentary succession. The Doğanköy Nappe includes Precambrian?–Paleozoic metasediments, intruded by Late Carboniferous-Early Permian calc-alkaline granitoids. Its Triassic cover comprises metaclastics and metacarbonates. The Istranca nappes were juxtaposed at the end of the Triassic and transgressively covered by Lower Jurassic coarse clastics, followed above by Middle to Late Jurassic carbonates, black shales and carbonate-siliciclastic sedimentary succession. The phosphate concretions in black shales yielded radiolarian assem- blages indicating Late Bajocian–Early Bathonian, Early Bathonian and Early Kimmeridgian ages. These nappes and their Jurassic cover are unconformably overlain by the Cenomanian-Santonian volcano-sedimentary successions in- truded by Santonian–Campanian Dereköy-Demirköy intrusive suite. The preliminary data suggest that the Variscan basements of the Mahyadağ and Sarpdere Nappes were juxtaposed prior to the Triassic and overridden by the Doğanköy Nappe of possible Rhodopean origin from S to N during the Cimmerian compressional events.

How to cite:

ISO 690:

Bedi̇, Y., Vasilev, E., Dabovski, C., Ergen, A., Okuyucu, C., Doğan, A., Teki̇n, U., Ivanova, D., Boncheva, I., Lakova, I., Sachanski, V., Kuşcu, İ., Tuncay, E., Gülnur Demiray, D., Soycan, H., Göncüoğlu, M. 2013. New age data from the tectonostratigraphic units of the Istranca “Massif” in NW Turkey: a correlation with SE Bulgaria. In Geologica Carpathica, vol. 64, no.4, pp. 255-277. 1335-0552. DOI: https://doi.org/10.2478/geoca-2013-0019

APA:

Bedi̇, Y., Vasilev, E., Dabovski, C., Ergen, A., Okuyucu, C., Doğan, A., Teki̇n, U., Ivanova, D., Boncheva, I., Lakova, I., Sachanski, V., Kuşcu, İ., Tuncay, E., Gülnur Demiray, D., Soycan, H., Göncüoğlu, M. (2013). New age data from the tectonostratigraphic units of the Istranca “Massif” in NW Turkey: a correlation with SE Bulgaria. Geologica Carpathica, 64(4), 255-277. 1335-0552. DOI: https://doi.org/10.2478/geoca-2013-0019

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