Geology and Tectonic Emplacement of Eclogite and Blueschists, Biga Peninsula, Northwest Turkey

ŞENGÜN F., YİĞİTBAŞ E., TUNÇ İ. O.

TURKISH JOURNAL OF EARTH SCIENCES, vol.20, no.3, pp.273-285, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 3
  • Publication Date: 2011
  • Doi Number: 10.3906/yer-0912-75
  • Journal Name: TURKISH JOURNAL OF EARTH SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.273-285
  • Keywords: eclogite, strike-slip tectonics, blueschist, Biga Peninsula, Turkey, AEGEAN REGION, METAMORPHISM, EVOLUTION, LAWSONITE, EXTENSION, MASSIF, BELT
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

The Biga Peninsula in northwestern Anatolia is a tectonic mosaic, comprising different tectonic units, representing the Sakarya Continent and oceanic assemblages of different origin and ages. The Camlica metamorphic association, a member of this orogenic mosaic in the westernmost part of the peninsula, is subdivided into three formations, from bottom to top; the Andiktasi formation, the Dedetepe formation, and the Salihler formation. Eclogite-facies metamorphic rocks occur as tectonic slices within schist-marble intercalations of the Dedetepe formation. These slices, about 2 km long and 500 m wide, include two different rock types; (i) quartz-mica schists, and (ii) metabasite lenses with eclogite/blueschist paragenesis. Foliation in the Dedetepe formation of the Camlica metamorphic association generally dips SW and strikes NW-SE around Dedetepe hill and Camlica village. In contrast, eclogite-facies metabasite slices strike NE-SW with NW-dipping foliation.