The Cubukludag graben, south of Izmir: its tectonic significance in the Neogene geological evolution of the western Anatolia

Genc C., Altunkaynak S., KARACIK Z., YAZMAN M., YILMAZ Y.

GEODINAMICA ACTA, vol.14, pp.45-55, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14
  • Publication Date: 2001
  • Doi Number: 10.1016/s0985-3111(00)01061-5
  • Journal Name: GEODINAMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.45-55
  • Istanbul Technical University Affiliated: No


Field studies on the Neogene successions in south of izmir reveal that subsequent Neogene continental basins were developed in the region. Initially a vast lake basin was formed during the Early-Middle Miocene period. The lacustrine sediments underwent an approximately NS shortening deformation to the end of Middle Miocene. A small portion of the basin fill was later trapped within the N-S-trending, fault-bounded graben basin, the Cubukludag graben, opened during the Late Miocene. Oblique-slip normal faults with minor sinistral displacement are formed possibly under N-S extensional regime, and controlled the sediment deposition. Following this the region suffered a phase of denudation which produced a regionwide erosional surface suggesting that the extension interrupted to the end of Late Miocene-Early Pliocene period. After this event the E-W-trending major grabens and horsts of western Anatolia began to form. The graben bounding faults cut across the Upper Miocene-Pliocene lacustrine sediments and fragmented the erosional surface. The Cubukludag graben began to work as a cross graben between the E-W grabens, since that period. (C) 2001 Editions scientifiques et medicales Elsevier SAS.