Geometric and kinetic analysis Zeloi Anticline in the northern part of Dezful Embayment, SW Iran

Document Type : علمی -پژوهشی

Abstract

Dezful Embayment in the central part of Zagros fold-thrust belt includes numerous oil fields. Zeloi Anticline in the north of this Embayment displays various geometry in different parts. Geometric and kinetic analysis of Zeloi Anticline is done using five seismic profiles almost perpendicular to the axis of the anticline. Aspect ratio parameter (R) suggests wide and broad words for Zeloi Anticline. Distribution of curvature on limb parameter (L) of this anticline is in range of 0.17≤ L ≤0.7. According to the stratigraphical column, Gachsaran Formation as upper detachment horizon and Kalhor member with Pabdeh and Gurpi Formations and Garua-Dashtak Formations have been involved as local and intermediate detachment horizons in deformation of Zeloi Anticline, respectively. This anticline exhibits geometry similar to the detachment folds, fault-propagation fold, pop-up structures and shear fault-bend fold in different parts. Because of the Garua-Dashtak detachment horizon existence in the area and since in the some seismic profiles Zeloi Anticline is a detachment fold, this anticline is analyzed as a faulted-detachment fold in central and south-eastern plunge and as an intermediate geometry between detachment fold and shear fault-bend fold in the northwest plunge.

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References

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