Construction of a Structural Model for Harir Anticline within Zagros fold-Thrust belt, Kurdistan of Iraq
Joint Authors
Umar, Abd Allah Amir
Syan, Soran Hasan
Source
ZANCO Journal of Pure and Applied Sciences
Issue
Vol. 28, Issue 6 (31 Dec. 2016), pp.90-105, 16 p.
Publisher
Salahaddin University-Erbil Department of Scientific Publications
Publication Date
2016-12-31
Country of Publication
Iraq
No. of Pages
16
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
The study area is considered to be a part of Arabian plate, located within High Folded Zone of the Zagros Fold-Thrust Belt in the Iraqi Kurdistan Region.
This area consists of a major anticline called Harir anticline.
The study of this structure was conducted along five traversal sections through 57 field stations in order to understand the geometry and elucidate structural model for generation and propagation of this fold.
Thirteen formations were exposed covering this anticline, ranging in age from Early Cretaceous up to the Pleistocene.
Geometrical analysis of Harir fold indicates that this fold is asymmetrical double plunging anticline, gentle to open and non-cylindrical, curvi-planar anticlinal structure.
Due to presence of three strike slip-faults cross cutting this anticline, it segmented into four transversal blocks which are namely Batas, Harir, Sheikh-Mamudian and Ashkafta blocks.
Each block has its own structural, sedimentlogical, and morphological properties making it different from the other blocks.
Detailed balanced and retro-deformable cross sections in the studied area reveal that the shortening increases gradually from northwest toward middle part and decreases towards southeastern part of Harir Anticline.
The calculated shortening consecutively is 6.76%, 14.30% and 14.31 % 10.52%, 5.48% from northwestern plunging area to the southeastern plunge.
The depth to detachment surface has been calculated, ranging between 10-10.5km below the regional level of Bekhme Formation.
This depth coincides with surface of the Upper Paleozoic Ora shale formation, which indicates this anticline is generated from this depth and propagated upwards.
Structural model is constructed for this anticline taking into consideration the two mechanisms informing this structure; one is the occurrence of slipping along detachment surface and second is the effect of the strike-slip faults (Tear faults) cross cutting Harir structure.
These two mechanisms acted synchronously and beginning at least from Late Cretaceous to the end of the Tertiary.
American Psychological Association (APA)
Umar, Abd Allah Amir& Syan, Soran Hasan. 2016. Construction of a Structural Model for Harir Anticline within Zagros fold-Thrust belt, Kurdistan of Iraq. ZANCO Journal of Pure and Applied Sciences،Vol. 28, no. 6, pp.90-105.
https://search.emarefa.net/detail/BIM-769917
Modern Language Association (MLA)
Umar, Abd Allah Amir& Syan, Soran Hasan. Construction of a Structural Model for Harir Anticline within Zagros fold-Thrust belt, Kurdistan of Iraq. ZANCO Journal of Pure and Applied Sciences Vol. 28, no. 6 (2016), pp.90-105.
https://search.emarefa.net/detail/BIM-769917
American Medical Association (AMA)
Umar, Abd Allah Amir& Syan, Soran Hasan. Construction of a Structural Model for Harir Anticline within Zagros fold-Thrust belt, Kurdistan of Iraq. ZANCO Journal of Pure and Applied Sciences. 2016. Vol. 28, no. 6, pp.90-105.
https://search.emarefa.net/detail/BIM-769917
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 104-105
Record ID
BIM-769917