1 Ocak 2020 Dergi makalesi Açık Erişim

Ozcan, Ercan; Hakyemez, Aynur; Ciner, Attila; Okay, Aral, I; Soussi, Mohamed; Boukhalfa, Kamel; Yucel, Ali Osman

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/9115</identifier>
  <creators>
    <creator>
      <creatorName>Ozcan, Ercan</creatorName>
      <givenName>Ercan</givenName>
      <familyName>Ozcan</familyName>
      <affiliation>Istanbul Tech Univ, Fac Mines, Dept Geol Engn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Hakyemez, Aynur</creatorName>
      <givenName>Aynur</givenName>
      <familyName>Hakyemez</familyName>
      <affiliation>Gen Directorate Mineral Res &amp; Explorat, Dept Geol Res, TR-06800 Ankara, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Ciner, Attila</creatorName>
      <givenName>Attila</givenName>
      <familyName>Ciner</familyName>
      <affiliation>Istanbul Tech Univ, Eurasia Inst Earth Sci, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Okay, Aral, I</creatorName>
    </creator>
    <creator>
      <creatorName>Soussi, Mohamed</creatorName>
      <givenName>Mohamed</givenName>
      <familyName>Soussi</familyName>
      <affiliation>Univ Tunis El Manar, Fac Sci Tunis, Dept Geol, Campus Univ, Tunis 2090, Tunisia</affiliation>
    </creator>
    <creator>
      <creatorName>Boukhalfa, Kamel</creatorName>
      <givenName>Kamel</givenName>
      <familyName>Boukhalfa</familyName>
      <affiliation>Univ Carthage, Fac Sci Bizerte, Dept Geol, Jarzonna 7021, Tunisia</affiliation>
    </creator>
    <creator>
      <creatorName>Yucel, Ali Osman</creatorName>
      <givenName>Ali Osman</givenName>
      <familyName>Yucel</familyName>
      <affiliation>Istanbul Tech Univ, Fac Mines, Dept Geol Engn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Reassessment Of The Age And Depositional Environments Of The Eocene Cayraz Formation, A Reference Unit For Tethyan Larger Benthic Foraminifera (Haymana Basin, Central Turkey)</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/9115</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.jseaes.2020.104304</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The Cayraz Formation, a reference unit for Tethyan Ypresian-middle/late Lutetian larger benthic foraminifera (Haymana Basin, central Turkey), is a thick (&amp;gt; 350 m) 'shallow-marine' mixed carbonate-siliciclastic sequence, divided into lower, middle and upper units. The lower and upper units predominantly consist of rhythmic intercalations of limestone and marly/silty beds with abundant larger benthic foraminifera (LBF), and the middle unit is composed of massive fine siliciclastic sediments, mostly barren in LBF and macrofossils. By studying three sections (CAYA, CAYB, and YES), encompassing the lower unit, we show that the Cayraz Formation (ca. 100 m-thick) displays notable vertical and lateral variability in benthic fauna and facies along an SE-NW transect at its type locality near Cayraz village. The distribution of LBF and facies patterns indicate a general shallowing upward trend, with more open marine environments in the easterly section (CAYA) and restricted shallow marine to continental environments with low diversity fauna in the westerly section (YES). A depositional setting ranging from outer to inner-ramp with continental influence only in the westerly section is proposed. Key orthophragminid and alveolinid taxa from the lower unit of the Cayraz Formation indicate shallow benthic zones (SBZ) 9/10 for its lower part, and SBZ 12 for its upper part, suggesting a late Ypresian age. The massive marly/silty section of the middle unit of the Cayraz Formation overlies the Alveolina-bearing limestones in all sections and yielded abundant planktonic foraminifera suggestive of P9 Zone. This implies a sharp environmental transition from platform to basin across the Ypresian-Lutetian boundary.</description>
  </descriptions>
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