Kinematic development and paleostress analysis of the Denizli Basin (Western Turkey): implications of spatial variation of relative paleostress magnitudes and orientations

KAYMAKCI N.

JOURNAL OF ASIAN EARTH SCIENCES, cilt.27, sa.2, ss.207-222, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.jseaes.2005.03.003
  • Dergi Adı: JOURNAL OF ASIAN EARTH SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.207-222
  • Anahtar Kelimeler: paleostress, relative stress magnitudes, stress permutation, Denizli Basin, Turkey, FAULT SLIP DATA, MENDERES MASSIF, REGIONAL STRESS, EXTENSIONAL TECTONICS, 3-DIMENSIONAL STRAIN, CENTRAL ANATOLIA, INVERSE PROBLEM, FIELD DATA, PLATE, ARC
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Paleostress orientations and relative paleostress magnitudes (stress ratios). determined by using the reduced stress concept. are used to improve the understanding of the kinematic characteristics of the Denizli Basin. Two different dominant extension directions were determined using fault-slip data and travertine fissure orientations. In addition to their stratigraphically coeval occurrence. the almost exact fit of the sigma(2) and sigma(3) orientations for the NE-SW and NW-SE extension directions in the Late Miocene to Recent units indicate that these two extension directions are a manifestation of stress permutations in the region and are contemporaneous. This relationship is also demonstrated by the presence of actively developing NE-SW and NW-SE elongated grabens developed as the result of NIE-SW and NW-SE directed extension in the region. Moreover, stress ratios plots indicate the presence of a zone of major stress ratio changes that are attributed to the interference of graben systems in the region. It is concluded that the plotting of stress orientations and distribution of stress ratios is a useful tool for detecting major differences in stress magnitudes over an area. the boundaries of which may indicate important Subsurface structures that cannot be observed on the surface. (c) 2005 Elsevier Ltd. All rights reserved.