Stratigraphic and Sedimentological Characteristics of Jurassic-Lower Cretaceous Sediments at Kosrelik-Kosrelikizigi (North of Ankara, Turkey)

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dc.contributor.authorDelikan, Arif
dc.contributor.authorAtasagun, Nesrin
dc.date.accessioned2020-03-26T18:58:31Z
dc.date.available2020-03-26T18:58:31Z
dc.date.issued2014
dc.departmentSelçuk Üniversitesien_US
dc.description1st International Congress on Stratigraphy (STRATI) -- JUL 01-07, 2013 -- Lisbon, PORTUGALen_US
dc.description.abstractJurassic-Lower Cretaceous rocks to the northeast of Ankara (central Turkey) were deposited in a tectonically controlled basin that was aligned SW-NE. Vertical and lateral lithological variations in the sequence resulted from synsedimentary tectonism. The Jurassic-Lower Cretaceous sequence in the study area overlies the weakly metamorphosed Late Triassic rocks (the Karakaya Complex) with an angular unconformity. The sequence begins with interbedded deltaic conglomerate and sandstone (the Corakliktepe Member). The Sinemurian-lower Pliensbachian sandy limestone overlies the coarse sandstone with both a lateral and vertical transition. The sandy limestone is red in colour and highly fossiliferous. Crinoidal limestone and ammonite-bearing marl rest on the sandy limestone, signifying a rapidly deepening depositional environment. It is overlain by red marl containing brachiopods and bivalve coquina interbeds. The intermediately bedded pseudonodular limestone with abundant ammonites, crinoids, brachiopods, and bivalves is found above the red marl. Following synsedimentary tectonism, thick nonfossiliferous mudstone was deposited over the ammonitebearing rocks (the Uzundere Member), indicating that the area shallowed during the early Pliensbachian. During the late Pliensbachian-early Toarcian, detritic rocks were deposited followed by a progressive change to deposition of variegated red limestone. This typical ammonitico-rosso facies wedges laterally into green mudstone (the Beytepe Member). After the Bajocian, the area rapidly shallowed and thick interbedded sandstone and mudstone (the Turnacesme Member) were deposited over the entire basin. Due to post-Callovian block faulting in the area, the base topography of the basin was changed. For that reason, in the northern part of the study area, the pelagic carbonate platform sediments (the Cakirlardere Formation) containing abundant ammonite and pelagic oolite were deposited directly onto the basement rocks. This points to the development of shallow areas offshore as a result of synsedimentary faulting. The pelagic ooid-bearing limestone grades laterally and vertically into cherty limestone. During the Oxfordian-Early Cretaceous, the area deepened and limestone with Radiolaria (the Sogukcam Formation) was deposited.en_US
dc.description.sponsorshipIUGS, Int Commiss Stratig, New Univ Lisbon, Fac Sci & Technol, Res Ctr Geol Sci & Engn, New Univ Lisbon, Fac Sci & Techno, Dept Earth Sci, GALP Energia SGPS S A, Partex Oil & Gas, Inst Francais Portugal, Centro Investigacao Ciencia & Engn Geologica, New Univ Lisbonen_US
dc.identifier.doi10.1007/978-3-319-04364-7_93en_US
dc.identifier.endpage491en_US
dc.identifier.isbn978-3-319-04364-7; 978-3-319-04363-0
dc.identifier.issn2197-9545en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage487en_US
dc.identifier.urihttps://dx.doi.org/10.1007/978-3-319-04364-7_93
dc.identifier.urihttps://hdl.handle.net/20.500.12395/31153
dc.identifier.wosWOS:000359019400093en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSPRINGER INT PUBLISHING AGen_US
dc.relation.ispartofSTRATI 2013en_US
dc.relation.ispartofseriesSpringer Geology
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectAnkaraen_US
dc.subjectJurassicen_US
dc.subjectAmmonitico-rossoen_US
dc.subjectPelagic ooliteen_US
dc.subjectPCPen_US
dc.subjectHardgrounden_US
dc.titleStratigraphic and Sedimentological Characteristics of Jurassic-Lower Cretaceous Sediments at Kosrelik-Kosrelikizigi (North of Ankara, Turkey)en_US
dc.typeConference Objecten_US

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