Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1359
Title: Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Melange, southern Turkey: Time constraints for the T/J boundary and sedimentary evolution of the southern margin of the northern Neotethys
Authors: Tekin, U. Kağan
Krystyn, Leopold
Okuyucu, Cengiz
Bedi, Yavuz
Sayit, Kaan
Keywords: Pelagic Assemblages
Radiolarian
Conodont
Southern Turkey
Ammonite Dating
Late Triassic-Early Jurassic
Correlation
Taurides
New Genus
New Species
Queen-Charlotte-Islands
East-Central Oregon
British-Columbia
Hettangian Ammonites
Accretionary Complex
Snowshoe Formation
Antalya Nappes
Gran-Sasso
Se Turkey
Middle
Issue Date: 2020
Publisher: MUSEUM NATL HISTOIRE NATURELLE
Abstract: The Mersin Melange (northwest of Mersin city) includes a variety of large sedimentary blocks/tectonic slices of Palaeozoic and Mesozoic origins. Of these, the latter represents facial and tectonostratigraphic counterparts of the Beysehir-Hoyran Nappes (remnants of the northern Neotethys). The Tavuscayiri Block, located at the center of the melange and dose to the Orbuklukeli hill, is one of such Mesozoic occurrences, with a continuous pelagic sequence from the Upper Triassic to Lower Jurassic. At the Orbuklukeli hill, a succession of middle Norian to Toarcian age has been precisely dated, which starts with conodont assemblages for the Norian and Rhaetian and includes radiolarians for the upper Rhaetian. An acidic tuff layer corresponds to the T-J boundary, which passes above to an increasingly dominating chert-bearing limestone series, marking a gradually deepening-upward of the sequence. The early Hettangian radiolarians are poorly represented, but diverse and well-preserved radiolarians have been retrieved from the middle Hettangian to the Pliensbachian. A total of eighty-five taxa, including fourteen new species, have been determined. In addition to these, one new genus (Praeudalia Tekin, n. gen.) has been described from the Rhaetian part of the section. The top of the section is represented by nodular limestones in Ammonitico rosso facies, including a diverse Toarcian ammonite fauna. All lithologies of the Orbuklukeli section along the Tavuscayiri Block can be correlated with the previously described lithologies of the Kayabasi Group/Formation in the Bozkir Unit, and Gulbahar/Gumuslu units in the Lycian Nappes.
URI: https://doi.org/10.5252/geodiversitas2020v42a27
https://hdl.handle.net/20.500.13091/1359
ISSN: 1280-9659
1638-9395
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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