New observations on the 1939 Erzincan Earthquake surface rupture on the Kelkit Valley segment of the North Anatolian Fault Zone, Turkey


GÜRSOY H. , TATAR O. , AKPINAR Z. , Polat A., Mesci L. , Tuncer D.

JOURNAL OF GEODYNAMICS, vol.65, pp.259-271, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65
  • Publication Date: 2013
  • Doi Number: 10.1016/j.jog.2012.06.002
  • Title of Journal : JOURNAL OF GEODYNAMICS
  • Page Numbers: pp.259-271
  • Keywords: North Anatolian Fault Zone, Strike-slip faulting, 1939 Erzincan Earthquake, CRUSTAL DEFORMATION, BLOCK ROTATIONS, MUDURNU VALLEY, EVOLUTION, PART

Abstract

The 1939 Erzincan Earthquake (M=7.8), occurred on the North Anatolian Fault Zone (NAFZ), was one of the most active strike-slip faults in the world, and created a 360-km-long surface rupture. Traces of this surface rupture are still prominently observed. In the absence of detailed mapping to resolve the fault characteristics, detailed observations have been conducted at 20 different points on the 70-km-long Kelkit Valley Segment (INS) of the NAFZ's between Niksar and Koyulhisar. Field data defining fault character and slip amounts were found at eight points and show right-lateral slip varying between 1.8 and 4.25 m and the vertical slip varying between 0.5 and 2.0 m.