ACTIVE TECTONICS OF GREAT KAROUN RIVER BASIN

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KHODABAKHSHNEZHAD A.; POURKERMANI M.; ARIAN M.; MATKAN A.A.; CHARCHI A.

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Journal: GEOSCIENCES Year:2015 | Volume:24 | Issue:95 (TECTONIC) Page(s): 13-28

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Title

ACTIVE TECTONICS OF GREAT KAROUN RIVER BASIN

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Keywords

GEOMORPHIC INDICES OF ACTIVE TECTONICSQ2

DRAINAGE BASINQ2

ASYMMETRYQ2

GREAT KAROUN RIVER BASINQ2

ZAGROSQ2

Abstract

GEOMORPHIC INDICES OF ACTIVE TECTONICS are useful tools to analyze the influence of active tectonics in an area. These indices have the advantage of being calculated using ArcGIS and RS (Remote Sensing) packages over large areas as a reconnaissance tool to identify geomorphic anomalies possibly related to active tectonics. This is particularly valuable in GREAT KAROUN RIVER BASIN of ZAGROS, where relatively little work on active tectonics based on this method was done. The study area in central ZAGROS fold- thrust-belt of the southwestern Iran is an area with NW–SE oriented structures provides an ideal location for testing the concept of an index to predict relative tectonic activity on a basis of river system or mountain front. Based upon values of the stream length-gradient index (SL), DRAINAGE BASIN ASYMMETRY (Af), hypsometric integral (Hi), ratio of valley-floor width to valley height (Vf), index of DRAINAGE BASIN shape (Bs), and index of mountain front sinuosity (Smf), overall index as index of relative active tectonic (Iat) was resulted that is a combination of the other indices. This indices are used to divide the landscape into four classes of relative tectonic activity. After measuring indices it is concluded that this part of the ZAGROS zone has variable rates of active tectonics. Based on corrected Iat values, the study area was divided into three parts: class 1 (very high relative tectonic activity, %24 in area; such as some parts of the east and central zone where Main ZAGROS Reverse Fault and Dezful embayment fault have the most influence); class 2 (high relative tectonic activity, 63% in area; such as most parts of the area in east, west, north and center where action of faults are lower than the previous class); class 3(moderate, 10% in area; such as most parts of the area in north and south where action of faults are the lowest). Therefore, we don’t have class 4 in this area, and 1% of basin is not measured for the indices because it is located in coastal plain of Khuzestan.

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APA: Copy

KHODABAKHSHNEZHAD, A., POURKERMANI, M., ARIAN, M., MATKAN, A.A., & CHARCHI, A.. (2015). ACTIVE TECTONICS OF GREAT KAROUN RIVER BASIN. GEOSCIENCES, 24(95 (TECTONIC)), 13-28. SID. https://sid.ir/paper/31317/en

Vancouver: Copy

KHODABAKHSHNEZHAD A., POURKERMANI M., ARIAN M., MATKAN A.A., CHARCHI A.. ACTIVE TECTONICS OF GREAT KAROUN RIVER BASIN. GEOSCIENCES[Internet]. 2015;24(95 (TECTONIC)):13-28. Available from: https://sid.ir/paper/31317/en

IEEE: Copy

A. KHODABAKHSHNEZHAD, M. POURKERMANI, M. ARIAN, A.A. MATKAN, and A. CHARCHI, “ACTIVE TECTONICS OF GREAT KAROUN RIVER BASIN,” GEOSCIENCES, vol. 24, no. 95 (TECTONIC), pp. 13–28, 2015, [Online]. Available: https://sid.ir/paper/31317/en

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