:: Volume 36, Issue 2 (2021) ::
GeoRes 2021, 36(2): 149-160 Back to browse issues page
The Analysis of Neotectonic Activities Evidence in Murghab Basin
R. Sharifi Najaf Abadi *
Department of Geography, Faculty of Humanities and Social Sciences, Farhangian University, Tehran, Iran , r.Sharifi@cfu.ac.ir
Abstract:   (4088 Views)
Aims: Murghab River is one of the main tributaries of the Zayandeh River.  There have been no significant Neotectonic studies conducted in the river's basin. However, Shazand, Khansar and Dalan faults cross the basin. This study aimed to investigate the possibility of Neotectonic activities in a part of the Murghab basin near the Shazand fault.
Methodology: A digital height model with an accuracy of 30 meters was prepared for this area and the geological layers were added afterward. The basin was divided into 18 sub-basins and Hi, Bs, Af, SL, S, Facet%, and V indices were calculated using Arc Map, Arc View and Global Amper software. The relative index of Active tectonics (IAT) was calculated, as well. Field visits were used for the complementary studies. All data were combined in the final analysis.
Findings: The relative index of active tectonic (IAT) shows that the majority of the sub-basins are active and semi-active. Along fault, some displacements were observed in the Slikenside of the fault. The network of streams in the Murghab Basin shows evidence that some of the streams have rotated 90-degree, which approves Neotectonic activities and lowering of the lake base level and its rupture in the studied area.
Conclusion: other nearby studies provide some evidence of the Shazand fault activity in this area. Highly likely tectonic activities in the future might be dangerous for people and facilities in the area and policymakers need to take it into consideration in future planning.
Keywords: Neotectonic , Geomorphic indices , Shazand Fault , Morghab River ,
Full-Text [PDF 1425 kb]   (56 Downloads)    
Article Type: Original Research | Subject: Geomorphology
Received: 2020/08/19 | Accepted: 2021/01/13 | Published: 2021/06/16
* Corresponding Author Address: No. 8, Niko Dead End, Akhtar Alley, West Shohada St, Najafabad, Iran Postal Code: 8518757171
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