Active tectonics of the Izmit Gulf (NE Marmara Sea): from high resolution seismic and multi-beam bathymetry data

GÖKAŞAN E., Alpar B. I. , GAZIOĞLU C., YÜCEL Z. Y. , TOK B., DOĞAN E., ...More

MARINE GEOLOGY, vol.175, pp.273-290, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 175
  • Publication Date: 2001
  • Doi Number: 10.1016/s0025-3227(01)00133-5
  • Journal Name: MARINE GEOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.273-290
  • Keywords: shallow seismic, Izmit Gulf, North Anatolian Fault Zone, Marmara Sea, active tectonics, NORTH ANATOLIAN FAULT, WESTWARD PROPAGATION, TURKEY, KINEMATICS, EVOLUTION, ORIGIN
  • Istanbul University Affiliated: Yes

Abstract

Several active faults were determined in the Gulf of Izmit, using high-resolution shallow seismic and multi-beam bathymetry data. One of them is a buried fault (Fault 2), following central axis of the gulf which forms the current morphology within its releasing and restraining bends. Releasing bends control the current morphology of the sub-basins. Also restraining bends form folds in the central basin and a thrust in the western basin. A left step over between two strike-slip faults (Faults 2 and II) creates a transpressional area. Therefore, Hersek and Catal deltas are uplifted.