Mineralogic evidences of a mid-Paleozoic tectono-thermal event in the Zonguldak terrane, northwest Turkey: implications for the dynamics of some Gondwana-derived terranes during the closure of the Rheic Ocean

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dc.authoridGoncuoglu, M. Cemal -- 0000-0002-4216-6995; Bozkaya, Omer -- 0000-0002-8474-8600en_US
dc.contributor.authorBozkaya, Omer
dc.contributor.authorYalcin, Huseyin
dc.contributor.authorGoncuoglu, Mehmet Cemal
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T10:03:57Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T10:03:57Z
dc.date.issued2012
dc.department[Bozkaya, Omer -- Yalcin, Huseyin] Cumhuriyet Univ, Dept Geol Engn, TR-58140 Sivas, Turkey -- [Goncuoglu, Mehmet Cemal] Middle E Tech Univ, Dept Geol Engn, TR-06531 Ankara, Turkeyen_US
dc.description.abstractThe Zonguldak terrane is a Gondwana-derived continental microplate along the Black Sea coast in northwest Anatolia. It includes a Cadomian basement, with oceanic-and island-arc sequences, unconformably overlain by siliciclastic rocks of Ordovician to Middle Silurian age. After a period of deformation and erosion, late Lower Devonian (Emsian) quartzites and shallow-marine limestones unconformably cover Middle Silurian (Wenlock) graptolitic shales. Along several cross sections across the unconformity plane, the mineralogical characteristics of the Paleozoic sedimentary rocks in the Zonguldak terrane are studied to check whether this regional unconformity is only of epeirogenic nature or the result of a thermal event. In addition to the appearance of kaolinite in Devonian units, crystal-chemical data of illites show a sudden jump at the unconformity plane. The b cell dimension values of illites of Ordovician-Silurian units are somewhat higher than those of Devonian-Carboniferous units and show a drastic drop between the Silurian and Devonian units. The new mineralogic data indicate that the pre-Emsian rocks in the Zonguldak terrane experienced a thermodynamo event, prior to the Emsian transgression. This Caledonian-time event is also reported in east Moesian terrane but not noticed in the neighboring Istanbul-Zonguldak and in the west Moesian Balkan - Kreishte terranes. By this, it is suggested that Zonguldak and east Moesian terranes behaved independently from the Istanbul-Balkan terranes during the closure of the Rheic Ocean. They very likely docked to Laurussia during Emsian by strike-slip faults and remained thereon at its platform margin, where the Middle-Late Devonian shallow-platform conditions were followed by fluvial (lagoon and delta) conditions and deposition of coal during Late Carboniferous.en_US
dc.description.sponsorshipCumhuriyet University [M-358]en_US
dc.description.sponsorshipThe study is supported by the Scientific Research Project Fund of the Cumhuriyet University under project number M-358. Dr. M.C. Goncuoglu gratefully acknowledges the contribution of the members of the MTA-BAS project group for some unpublished data on the northwest Anatolian Paleozoic stratigraphy. The authors would like to express their thanks to Fatma Yalcin and Ufuk Kus who kindly performed the XRD analysis and thin-section preparations.en_US
dc.identifier.doi10.1139/E11-076en_US
dc.identifier.endpage575en_US
dc.identifier.issn0008-4077
dc.identifier.issn1480-3313
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-84858425966en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage559en_US
dc.identifier.urihttps://dx.doi.org/10.1139/E11-076
dc.identifier.urihttps://hdl.handle.net/20.500.12418/9199
dc.identifier.volume49en_US
dc.identifier.wosWOS:000301876000001en_US
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherCANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESSen_US
dc.relation.ispartofCANADIAN JOURNAL OF EARTH SCIENCESen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleMineralogic evidences of a mid-Paleozoic tectono-thermal event in the Zonguldak terrane, northwest Turkey: implications for the dynamics of some Gondwana-derived terranes during the closure of the Rheic Oceanen_US
dc.typeArticleen_US

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