1 Ocak 2018 Dergi makalesi Açık Erişim

Gocmengil, Gonenc; Karacik, Zekiye; Genc, S. Can; Billor, M. Zeki

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/29533</identifier>
  <creators>
    <creator>
      <creatorName>Gocmengil, Gonenc</creatorName>
      <givenName>Gonenc</givenName>
      <familyName>Gocmengil</familyName>
      <affiliation>Istanbul Tech Univ, Fac Mines, Dept Geol Engn, Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Karacik, Zekiye</creatorName>
      <givenName>Zekiye</givenName>
      <familyName>Karacik</familyName>
      <affiliation>Istanbul Tech Univ, Fac Mines, Dept Geol Engn, Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Genc, S. Can</creatorName>
      <givenName>S. Can</givenName>
      <familyName>Genc</familyName>
      <affiliation>Istanbul Tech Univ, Fac Mines, Dept Geol Engn, Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Billor, M. Zeki</creatorName>
      <givenName>M. Zeki</givenName>
      <familyName>Billor</familyName>
      <affiliation>Auburn Univ, Dept Geol &amp; Geog, Auburn, AL USA</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Ar-40-Ar-39 Geochronology And Petrogenesis Of Postcollisional Trachytic Volcanism Along The Izmir-Ankara-Erzincan Suture Zone (Ne, Turkey)</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2018</publicationYear>
  <dates>
    <date dateType="Issued">2018-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/29533</alternateIdentifier>
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  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.3906/yer-1708-4</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>
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  <descriptions>
    <description descriptionType="Abstract">The obliteration of the Neo-Tethyan Ocean and collision of the microplates along the northern part of Turkey led to the development of the Izmir-Ankara-Erzincan suture zone (IAESZ). After the collision of Pontides with the Central-Anatolian Crystalline Complex (CACC) in the Paleocene, a new phase of extension and volcanism concomitantly developed along the northern (Almus; Pontides) and southern (Yildizeli; CACC) sides and along the IAESZ during the Middle Eocene time interval. The first products of the Middle Eocene volcanism in these areas are represented by calc-alkaline to alkaline (basic-intermediate) volcanic and volcanoclastic units together with late-stage trachytic dikes, plugs, and stocks. The mantle source area of both volcanic units displays a metasomatized character, which was dominantly fluxed by sediment-sourced melts. The partial melting of the metasomatized source area gave rise to first-stage basic-intermediate volcanism in the crustal levels. Simultaneously with the generation of the first-stage volcanism, basaltic trachyandesitic shallow-seated magma mushes were also developed. The reactivation of these shallow-seated mushes by late-stage extensional tectonics gave rise to the development of trachytic volcanism in both regions, which have a high-K to shoshonitic character. Almus trachytic lavas are phenocryst-poor and have differentiated Mg# numbers (avg. 26). On the other hand, Yildizeli trachytic lavas have a broad compositional range (benmoreite to latite); they are phenocryst-rich and show more basic character (Mg# avg. 40). Trachytic volcanism in both areas is largely controlled by fractional crystallization of similar basaltic trachyandesitic parental magma with minor assimilation of the upper crustal lithologies. Ar-40-Ar-39 ages from sanidine phenocrysts from both areas also confirm that trachytic volcanism in both regions developed nearly coevally in different tectonic blocks (similar to 41-40 Ma). Generation of similar volcanism on the different tectonic blocks during the postcollisional stage was probably governed by a regional-scale delamination and/or lithospheric removal-related tectonomagmatic processes.</description>
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