Abstract

Burkh Anticline having a length of 50 km and a width of 9 km is located 40 km to the north of Bastak City in Internal Fars zone along folded-thrust belt of Zagros. In order to assess the active tectonics in the area of study, morphotectonical indices such as valley index (V), ratio of valley floor to valley height (Vf), channel sinuosity index (S), mountain front faceting index (F%) and mountain front sinuosity(Smf) are studied. These investigations show that the activity is not equal in various sections along Burkh Anticline and the central part of this anticline is the most active one.

Highlights

  • The area of study is situated in the structural zone of Internal Fars within folded-thrust belt of Zagros between eastern longitudes of 54 ̊ and 55 ̊ and northern latitudes of 27 ̊10' and 27 ̊30'

  • This approach was followed for assessment of Burkh Anticline

  • Analysis of morphometric indices led to following conclusions: 1) High value of mountain front faceting index in the middle parts and relative low value of the same index in the northwestern and southeastern parts, in addition to small value of Smf index in the middle parts of the anticline suggest larger tectonic activity of the central parts of the anticline

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Summary

Introduction

The area of study is situated in the structural zone of Internal Fars within folded-thrust belt of Zagros between eastern longitudes of 54 ̊ and 55 ̊ and northern latitudes of 27 ̊10' and 27 ̊30'. In terms of provincial divisions, the respective region is located in the west of Hormozgan Province and at an approximate distance of 40 km from Bastak City to the north. Taking into account the location of the respective anticline in folded-thrust zone of Zagros, which is in turn a result of active convergence of Arabian and Eurasia plates along NNE-SSW direction [1] at a speed of 22 mm/year [2] up to 35 mm/year [3] this region is regarded among the tectonically active areas of Iran. (2015) Morphotectonic Analysis of Burkh Anticline, North of Bastak (Zagros). M. Khalaj searchers with regard to introducing the tectonic characteristics of this part of Iran

Research Methodology
Morphometric Indices
Mountain Front Faceting Index
Ratio of Valley Floor Width to Its Height
Conclusions
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