Petrography, geochemistry, and provenance of Jurassic sandstones from the Sakarya Zone, NW Turkey

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dc.authoridSENGUN, FIRAT/0000-0002-7323-9659
dc.authoridKoralay, Ersin/0000-0002-8210-0958
dc.contributor.authorSengun, Firat
dc.contributor.authorKoralay, Osman Ersin
dc.date.accessioned2025-01-27T20:27:01Z
dc.date.available2025-01-27T20:27:01Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe Jurassic sandstones exposed in the western part of the Sakarya Zone are yellowish to brown, moderate to well sorted, medium to coarse-grained, grain-supported, and cemented by calcareous and minor silica. Sandstones are mainly classified as litharenite, subarkose, and arkose according to the relative proportions of quartz, feldspar and rock fragments, and major element ratios. On the SiO2 variation diagram, Na2O and K2O show slight positive correlations, which could reflect abundance of sodic plagioclase and K-feldspar with quartz within high Si-content sandstones. Sandstones generally exhibit slight LREE enrichment with respect to HREEs. The REE plots are characteristic for sedimentary rocks derived from the upper continental crust. Combining the results of several provenance discrimination diagrams, elemental ratios (Th/Sc, Zr/Sc, La/Th), and REE contents in sandstones, they reveal that the sandstones originated from intermediate to felsic source rocks. Accordingly, the probable source of the Jurassic sandstones is the crystalline basement of the Sakarya Zone consisting of Devonian, Carboniferous, and Permian granitoids, and high-grade metamorphic basement rocks. The Jurassic sandstones mostly have characteristic features of passive continental margin basins. It can be noted that the sandstones may have been deposited in a marginal basin that began to open in Early Jurassic time. CIA and CIW values for the Jurassic sandstones suggest that the source area was subject to low to moderate chemical weathering under semihumid to semiarid climatic conditions.
dc.description.sponsorshipScientific Research Coordination Unit of Canakkale Onsekiz Mart University [FHD-2016-1086]
dc.description.sponsorshipThe Scientific Research Coordination Unit of Canakkale Onsekiz Mart University supported this study with project number FHD-2016-1086. We thank the editor, Timur Ustaomer, for his constructive comments. Constructive reviews by Aral Okay, Sema Tetiker, and an anonymous reviewer helped to clarify the picture and considerably improved the manuscript.
dc.identifier.doi10.3906/yer-1901-10
dc.identifier.endpage622
dc.identifier.issn1300-0985
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85071172638
dc.identifier.scopusqualityQ2
dc.identifier.startpage603
dc.identifier.trdizinid336284
dc.identifier.urihttps://doi.org/10.3906/yer-1901-10
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/336284
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22548
dc.identifier.volume28
dc.identifier.wosWOS:000477003100007
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Earth Sciences
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectPetrography
dc.subjectgeochemistry
dc.subjectJurassic
dc.subjectSakarya Zone
dc.subjectNW Turkey
dc.titlePetrography, geochemistry, and provenance of Jurassic sandstones from the Sakarya Zone, NW Turkey
dc.typeArticle

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