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Origin and geodynamic environments of the metamorphic sole rocks from the zmir-Ankara-Erzincan suture zone (Tokat, northern Turkey)

Cortuk, Rahmi Melih; Celik, Omer Faruk; Ozkan, Mutlu; Sherlock, Sarah C.; Marzoli, Andrea; Altintas, Ismail Emir; Topuz, Gultekin


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  <dc:creator>Cortuk, Rahmi Melih</dc:creator>
  <dc:creator>Celik, Omer Faruk</dc:creator>
  <dc:creator>Ozkan, Mutlu</dc:creator>
  <dc:creator>Sherlock, Sarah C.</dc:creator>
  <dc:creator>Marzoli, Andrea</dc:creator>
  <dc:creator>Altintas, Ismail Emir</dc:creator>
  <dc:creator>Topuz, Gultekin</dc:creator>
  <dc:date>2016-01-01</dc:date>
  <dc:description>The Late Cretaceous accretionary complex of the zmir-Ankara-Erzincan suture zone, near Artova, is composed mainly of peridotites (variably serpentinized), amphibolite, garnet-micaschist, calc-schist, marble, basalt, sandstones, neritic limestones. The metamorphic rocks were interpreted as the metamorphic sole rocks occurring at the base of mantle tectonites, because: (i) amphibolites were observed together with the serpentinized peridotites suggesting their occurrences in the oceanic environment; (ii) foliation in amphibolites and serpentinized peridotites run subparallel to each other; (iii) all these metamorphic rocks and serpentinized peridotites are cross-cut by the unmetamorphosed dolerite dikes with island arc tholeiite-like chemistry. Geochemical characteristics of the amphibolites display enriched mid-ocean ridge basalt (E-MORB)- and ocean island basalt (OIB)-like signatures. The dolerite dikes, on the other hand, yield an island arc tholeiite-like composition. Geothermobarometric investigations of the metamorphic sole rocks suggest that the metamorphic temperature was similar to 650 +/- 30 degrees C and the pressure condition was less than 0.5GPa. Dating of hornblende grains from amphibolite yielded age values ranging from 139 +/- 11 to 157 +/- 3.6Ma (2 sigma). The oldest weighted average age value is regarded as approximating the timing of the intra-oceanic subduction. These cooling ages were interpreted to be the intra-oceanic subduction/thrusting time of the zmir-Ankara-Erzincan oceanic domain.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/53135</dc:identifier>
  <dc:identifier>oai:zenodo.org:53135</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>INTERNATIONAL GEOLOGY REVIEW 58(15) 1839-1855</dc:source>
  <dc:title>Origin and geodynamic environments of the metamorphic sole rocks from the zmir-Ankara-Erzincan suture zone (Tokat, northern Turkey)</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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