Recent stress field of the Sinai subplate region

Ahmed Badawy, F. Horváth

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Quaternary and recent tectonic stress data for the Sinai subplate region have been compiled including focal mechanism solutions, in-situ stress measurements, fault slip data and alignments of young volcanic feeders. The average direction of maximum horizontal stress (S(H)) has been determined by means of a linear interpolation method. The results indicate that the direction of the average maximum horizontal stress is closely parallel to the direction of the absolute motion of Africa. Analysis of the orientation of principal stress directions suggests that a large part of the Sinai subplate region is subjected to a strike-slip regime characterized by an average maximum horizontal stress trend of NW (54°W). For example, out of 50 earthquake focal mechanism solutions 52% are pure strike-slip, and 10% are either normal or thrust fault with a remarkable strike-slip component. The remaining are pure normal fault (18%), thrust fault (12%), or undetermined (8%). Three different tectonic subprovinces can be delineated. Northwestern Egypt, the eastern Mediterranean, Israel, Lebanon, and northern Syria are characterized by strike-slip often with a remarkable thrust faulting component stress regime. The northern Red Sea, the Sinai peninsula, and a significant part of the Arabian plate are characterized by strike-slip often with a remarkable normal faulting component stress regime. This is also the case for southwestern Turkey.

Original languageEnglish
Pages (from-to)385-403
Number of pages19
JournalTectonophysics
Volume304
Issue number4
DOIs
Publication statusPublished - Apr 30 1999

Fingerprint

stress field
stress distribution
slip
focal mechanism
thrust fault
normal fault
tectonics
faulting
Lebanon
Syria
Red Sea
Arabian plate
Egypt
Israel
feeders
stress measurement
Turkey
fault slip
in situ stress
peninsulas

Keywords

  • Focal mechanisms
  • In situ
  • Interpolation
  • Sinai subplate
  • Stress field

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Geophysics

Cite this

Recent stress field of the Sinai subplate region. / Badawy, Ahmed; Horváth, F.

In: Tectonophysics, Vol. 304, No. 4, 30.04.1999, p. 385-403.

Research output: Contribution to journalArticle

Badawy, Ahmed ; Horváth, F. / Recent stress field of the Sinai subplate region. In: Tectonophysics. 1999 ; Vol. 304, No. 4. pp. 385-403.
@article{3e2a79e5abda4f0fbe3f97acf17e27a3,
title = "Recent stress field of the Sinai subplate region",
abstract = "Quaternary and recent tectonic stress data for the Sinai subplate region have been compiled including focal mechanism solutions, in-situ stress measurements, fault slip data and alignments of young volcanic feeders. The average direction of maximum horizontal stress (S(H)) has been determined by means of a linear interpolation method. The results indicate that the direction of the average maximum horizontal stress is closely parallel to the direction of the absolute motion of Africa. Analysis of the orientation of principal stress directions suggests that a large part of the Sinai subplate region is subjected to a strike-slip regime characterized by an average maximum horizontal stress trend of NW (54°W). For example, out of 50 earthquake focal mechanism solutions 52{\%} are pure strike-slip, and 10{\%} are either normal or thrust fault with a remarkable strike-slip component. The remaining are pure normal fault (18{\%}), thrust fault (12{\%}), or undetermined (8{\%}). Three different tectonic subprovinces can be delineated. Northwestern Egypt, the eastern Mediterranean, Israel, Lebanon, and northern Syria are characterized by strike-slip often with a remarkable thrust faulting component stress regime. The northern Red Sea, the Sinai peninsula, and a significant part of the Arabian plate are characterized by strike-slip often with a remarkable normal faulting component stress regime. This is also the case for southwestern Turkey.",
keywords = "Focal mechanisms, In situ, Interpolation, Sinai subplate, Stress field",
author = "Ahmed Badawy and F. Horv{\'a}th",
year = "1999",
month = "4",
day = "30",
doi = "10.1016/S0040-1951(98)00271-6",
language = "English",
volume = "304",
pages = "385--403",
journal = "Tectonophysics",
issn = "0040-1951",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Recent stress field of the Sinai subplate region

AU - Badawy, Ahmed

AU - Horváth, F.

PY - 1999/4/30

Y1 - 1999/4/30

N2 - Quaternary and recent tectonic stress data for the Sinai subplate region have been compiled including focal mechanism solutions, in-situ stress measurements, fault slip data and alignments of young volcanic feeders. The average direction of maximum horizontal stress (S(H)) has been determined by means of a linear interpolation method. The results indicate that the direction of the average maximum horizontal stress is closely parallel to the direction of the absolute motion of Africa. Analysis of the orientation of principal stress directions suggests that a large part of the Sinai subplate region is subjected to a strike-slip regime characterized by an average maximum horizontal stress trend of NW (54°W). For example, out of 50 earthquake focal mechanism solutions 52% are pure strike-slip, and 10% are either normal or thrust fault with a remarkable strike-slip component. The remaining are pure normal fault (18%), thrust fault (12%), or undetermined (8%). Three different tectonic subprovinces can be delineated. Northwestern Egypt, the eastern Mediterranean, Israel, Lebanon, and northern Syria are characterized by strike-slip often with a remarkable thrust faulting component stress regime. The northern Red Sea, the Sinai peninsula, and a significant part of the Arabian plate are characterized by strike-slip often with a remarkable normal faulting component stress regime. This is also the case for southwestern Turkey.

AB - Quaternary and recent tectonic stress data for the Sinai subplate region have been compiled including focal mechanism solutions, in-situ stress measurements, fault slip data and alignments of young volcanic feeders. The average direction of maximum horizontal stress (S(H)) has been determined by means of a linear interpolation method. The results indicate that the direction of the average maximum horizontal stress is closely parallel to the direction of the absolute motion of Africa. Analysis of the orientation of principal stress directions suggests that a large part of the Sinai subplate region is subjected to a strike-slip regime characterized by an average maximum horizontal stress trend of NW (54°W). For example, out of 50 earthquake focal mechanism solutions 52% are pure strike-slip, and 10% are either normal or thrust fault with a remarkable strike-slip component. The remaining are pure normal fault (18%), thrust fault (12%), or undetermined (8%). Three different tectonic subprovinces can be delineated. Northwestern Egypt, the eastern Mediterranean, Israel, Lebanon, and northern Syria are characterized by strike-slip often with a remarkable thrust faulting component stress regime. The northern Red Sea, the Sinai peninsula, and a significant part of the Arabian plate are characterized by strike-slip often with a remarkable normal faulting component stress regime. This is also the case for southwestern Turkey.

KW - Focal mechanisms

KW - In situ

KW - Interpolation

KW - Sinai subplate

KW - Stress field

UR - http://www.scopus.com/inward/record.url?scp=0344549846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0344549846&partnerID=8YFLogxK

U2 - 10.1016/S0040-1951(98)00271-6

DO - 10.1016/S0040-1951(98)00271-6

M3 - Article

AN - SCOPUS:0344549846

VL - 304

SP - 385

EP - 403

JO - Tectonophysics

JF - Tectonophysics

SN - 0040-1951

IS - 4

ER -