Cretaceous-Tertiary (K-T) boundary evaporites in the Malatya Basin, eastern Turkey

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dc.authoridGUNDOGAN, Ibrahim/0000-0002-2148-3377
dc.authorwosidTekin, Erdogan/AAH-9614-2020
dc.authorwosidGUNDOGAN, Ibrahim/V-3534-2017
dc.contributor.authorAyyildiz, Turhan
dc.contributor.authorVarol, Baki
dc.contributor.authorOnal, Mehmet
dc.contributor.authorTekin, Erdogan
dc.contributor.authorGundogan, Ibrahim
dc.date.accessioned2024-08-04T20:41:19Z
dc.date.available2024-08-04T20:41:19Z
dc.date.issued2015
dc.departmentİnönü Üniversitesien_US
dc.description.abstractThe Malatya basin is situated on the Anatolid-Torid plate of the Neo-Tethys Sea. Evaporites were deposited in the northwestern part of the Malatya basin, which is referred to as the Hekimhan sub-basin. Although the Gunduzbey sub-basin in the southeastern Malatya basin has coeval deposits, it contains no evaporate deposits. The evaporite is most likely the result of the last transgressive-regressive cycle of the Late Cretaceous Sea. The pre-evaporitic unit is represented by the carbonate platform deposit of the Loftusia banks, which partly underwent dolomitization and overlies the deep marine sediments. Celestite-bearing algal limestone was deposited directly below the gypsum-dominated evaporate unit in association with the organic-rich mudstone. Evaporite sedimentation took place in various types of environments, such as marginal shallow subaqueous with the association of sabkha-coastal lagoon and deeper subaqueous. It is assumed that the tectonic evolution of the basin margin, which occurred during the latest stage of the Cretaceous regression, was responsible for the environmental restriction leading to evaporate sedimentation under arid/semiarid climatic conditions. The Sr-87/Sr-86 ratios obtained from 38 samples of the gypsum and celestite-bearing limestones (11 samples) range between 0.707817 and 0.707980 and between 0.707783 and 0.707864, respectively. The delta S-34 values range from +19.5 to +22.4 aEuro degrees, and the delta O-18 values range from +9.6 to +12.7 aEuro degrees. These isotopic signatures correspond to that of Late Cretaceous/Early Paleocene (Cretaceous-Tertiary boundary) marine water. However, celestite exhibit(s) relatively higher delta S-34 and Sr-87/Sr-86 values than expected marine values, which could be a result of contribution of diagenetic fluid into the celestite-precipitated environment.en_US
dc.description.sponsorshipScientific Research Project Directory of Ankara University [07B4343004]en_US
dc.description.sponsorshipThis work was funded by a grant from by Scientific Research Project Directory of Ankara University under project number 07B4343004. The authors thank Ankara University and Prof. Dr. E. Gokten (retired from Ankara University) for the tectonic interpretation. First version of the manuscript was reviewed by J. M. Rouchy (retired from Laboratoire de Paleontologie du Museum, Paris), whose insightful and constructive comments are much appreciated.en_US
dc.identifier.doi10.1007/s13146-015-0254-5
dc.identifier.endpage476en_US
dc.identifier.issn0891-2556
dc.identifier.issn1878-5212
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-84947484665en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage461en_US
dc.identifier.urihttps://doi.org/10.1007/s13146-015-0254-5
dc.identifier.urihttps://hdl.handle.net/11616/97056
dc.identifier.volume30en_US
dc.identifier.wosWOS:000365094000008en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofCarbonates and Evaporitesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCretaceous-Tertiary boundaryen_US
dc.subjectK-Pg evaporatesen_US
dc.subjectIsotopeen_US
dc.subjectDolomiteen_US
dc.subjectKarstic limestoneen_US
dc.titleCretaceous-Tertiary (K-T) boundary evaporites in the Malatya Basin, eastern Turkeyen_US
dc.typeArticleen_US

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