First records of trace fossils from the Lake District, southwestern Turkey

Bulletin of geosciences

Görmüş¹  Uysal K¹  Kanbur S¹  M¹  Nielsen JK¹ 

关键词: stratigraphy;    trace fossils;    ethology;    ichnofacies;    shelf;    bathyal;    Turkey;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

ImportantnewichnologicaldatawasobtainedfromtheIspartaCcedil;ayFormation(TriassictoearlyCretaceous),Koccedil;tepeFormation(middlePaleocenetoEarlyEocene),IspartaFormation(EarlytoMiddleEocene)and#304;ncesuFormation(MiddleEocenetoEarlyOligocene).TheseformationsaresignificantlyexposedintheE#287;irdir,Gouml;nenandIspartaregionswithinthenorthernpartoftheIspartaAngle.Anoverviewofthestratigraphyanditstrace-fossilbearingformationsandmicrofossilcontentispresentedtogetherwithrecommendations.Thedensityanddiversityoftracefossilsvarybetweenandwithintheseformations,whichoriginatedindeep-marineshelfslopeandshelfenvironmentsoftheNeotethysocean.Changesinthefrequencyofabruptturbiditicdeposition,oxygenationofthebottomwaterandpossiblyfoodavailabilityarereflectiveinthetracefossildistribution.ThetracefossilsoftheIspartaCcedil;ay,Koccedil;tepeandIspartaformationsaretypicalofdeep-marinesettingswithoccasionalhigh-energyturbiditicconditions.TheIspartaCcedil;ayFormation(Paleodictyonichnosubfacies)isseenasthebedrocksoftheregion,whereastheIspartaFormation(Ophiomorpharudisichnosubfacies)overliesconformablytheKoccedil;tepeFormation(NereitesandArenicolitesichnofacies).The#304;ncesuFormationislaterallyinterlacedwiththeIspartaFormation.Ahighdiversityoftracefossilsoccursinthe#304;ncesuFormation(Zoophycosichnofacies),whichwasformedinanoutershelfenvironment.FindingsfrompreviousichnologicalinvestigationsinTurkeyarecompiledandcomparedwiththepresentresultsfromtheIspartaAngle.

【 授权许可】

Unknown