1. Ar-40/Ar-39 dating of ignimbrites and plinian air-fall layers from Cappadocia, Central Turkey: Implications to chronostratigraphic and Eastern Mediterranean palaeoenvironmental record
- Author
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Halil Gürsoy, Lothar Viereck, Petra Lepetit, Orhan Tatar, Michael Koch, John D.A. Piper, Bernhard Mayer, Masafumi Sudo, Manuela Gruber, Ali Gürel, Ibrahim Çopuroğlu, 0-Belirlenecek, [Lepetit, Petra -- Viereck, Lothar -- Gruber, Manuela -- Mayer, Bernhard -- Koch, Michael] Univ Jena, Inst Geowissensch, D-07749 Jena, Germany -- [Piper, John D. A.] Univ Liverpool, Dept Earth & Ocean Sci, Liverpool L69 7ZE, Merseyside, England -- [Sudo, Masafumi] Univ Potsdam, Inst Geowissensch, D-14476 Golm, Germany -- [Gurel, Ali -- Copuroglu, Ibrahim] Nigde Univ, TR-51100 Nigde, Turkey -- [Tatar, Orhan -- Gursoy, Halil] Cumhuriyet Univ, Dept Geol, TR-58140 Sivas, Turkey, and Mayer, Bernhard -- 0000-0001-7478-6614
- Subjects
Subduction ,Turkey ,Context (language use) ,Late Miocene ,Cappadocia ,Paleosol ,Sequence (geology) ,Paleontology ,Geophysics ,Geochemistry and Petrology ,Ar-40/Ar-39 dating ,Magmatism ,Radiometric dating ,Institut für Geowissenschaften ,Neogene ,Chronostratigraphy ,Tephrostratigraphy ,Geology - Abstract
WOS: 000342248900016, Magmatism forming the Central Anatolian Volcanic Province of Cappadocia, central Turkey, records the last phase of Neotethyan subduction after similar to 11 Ma. Thirteen large calc-alkaline ignimbrite sheets form marker bands within the volcano-sedimentary succession (the Urgup Formation) and provide a robust chronostratigraphy for paleoecologic evaluation of the interleaved paleosols. This paper evaluates the chronologic record in the context of the radiometric, magnetostratigraphic and lithostratigraphic controls. Previous inconsistencies relating primarily to K/Ar evidence were reason for the initiation of an integrated study which includes Ar-40/Ar-39 dating, palaeomagnetic and stratigraphic evidence. The newly determined Ar-40/Ar-39-ages (Lepetit, 2010) are in agreement with Ar/Ar and U/Pb data meanwhile published by Pauquette and Le Pennec (2012) and Aydar et al. (2012). The Ar-40/Ar-39-ages restrict the end of the Urgup Formation to the late Miocene. The paleosol sequence enclosed by the ignimbrites is thus restricted to the late Miocene, the most intense formation of pedogene calcretes correlating with the Messinian Salinity Crisis. (C) 2014 Elsevier GmbH. All rights reserved., Friedrich-Schiller-Universitat Jena (program ProChance); Boehringer-Ingelheim; Hartmut und Lore Schuler-Stiftung, This research was funded by the Friedrich-Schiller-Universitat Jena (program ProChance), Boehringer-Ingelheim and Hartmut und Lore Schuler-Stiftung (grant). We thank Kay Lancaster for drafting Figure 1. We are grateful to Burhan Sadiklar and Gianluca Groppelli for comments that improved the final version of this paper.
- Published
- 2014