Quantitative analysis of relative tectonic activity in the Sarvestan area, central Zagros, Iran

Dehbozorgi, Maryam; Pourkermani, Mohsen; Arian, Mehran; Matkan, A A; Motamedi, Hossein; Hosseiniasl, A.

doi:10.1016/j.geomorph.2010.05.002

Cited by 199 publications

(112 citation statements)

References 25 publications

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“…Common approaches in tectonic geomorphology rely on the analyses of drainage networks (e.g., [11][12][13][14][15][16]) and topographic surfaces (e.g., [17][18][19][20]). River profile analyses proved to be useful in detecting active structures, delineating spatial patterns in rock uplift rates and, in some cases, estimating the amount of uplift or incision for different segments of a river (e.g., [21][22][23]).…”

Section: Introductionmentioning

confidence: 99%

DEM-Based Analysis of Interactions between Tectonics and Landscapes in the Ore Mountains and Eger Rift (East Germany and NW Czech Republic)

et al. 2014

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Tectonics modify the base-level of rivers and result in the progressive erosion of landscapes. We propose here a new method to classify landscapes according to their erosional stages. This method is based on the combination of two DEM-based geomorphic indices: the hypsometric integral, which highlights elevated surfaces, and surface roughness, which increases with the topographic elevation and the incision by the drainage network. The combination of these two indices allows one to produce a map of erosional discontinuities that can be easily compared with the known structural framework. In addition, this method can be easily implemented (e.g., in MATLAB) and provides a quick way to analyze regional-scale landscapes. We propose here an example of a region where this approach becomes extremely valuable: the Ore Mountains and adjacent regions. The lack of young stratigraphic markers prevents a detailed analysis of recent fault activity. However, discontinuities in mapped geomorphic indices coupled to the analysis of river longitudinal profiles suggest a tight relationship between erosional discontinuities and main tectonic lineaments.Remote Sens. 2014, 6 7972

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Section: Introductionmentioning

confidence: 99%

DEM-Based Analysis of Interactions between Tectonics and Landscapes in the Ore Mountains and Eger Rift (East Germany and NW Czech Republic)

et al. 2014

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“…We use geomorphic indices of active tectonics, known to be useful in active tectonic studies (Bull and McFaden, 1977;Azor et al, 2002;Molin et al, 2004;Silva et al, 2003;Keller and Pinter, 2002). This methodology has been tested previously as a valuable tool in different tectonically active areas, namely the south-western USA (Rockwell et al,1985), the Pacific coast of Costa Rica (Wells et al, 1988), the Mediterranean coast of Spain (Silva,1994), the south-western Sierra Nevada of Spain (El Hamdouni et al, 2008), and the Sarvestan area in the central Zagros of Iran (Dehbozorgi et al, 2010). These studies have proved useful.…”

Section: Introductionmentioning

confidence: 99%

Relative tectonic activity classification in the Kermanshah area, western Iran

Arian

Aram

2014

Solid Earth

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Abstract. Due to the closing of the subduction zone and the collision of the Arabian and Eurasian plates, the High Zagros region has always been affected by a wide range of tectonic variations. In this research, the Gharasu River basin, which is located in the Kermanshah area, was selected as the study area, six geomorphic indices were calculated, and the results of each one were divided into three classes. Then, using the indices, relative tectonic activity was calculated, and their values were classified and analysed in four groups. Regions were identified as very high, high, moderate and low. In analysing the results and combining them with field observations and regional geology, the results were often associated and justified with field evidence. The highest value is located on the Dokeral anticline in the crush zone in Zagros. Most of the areas with high and moderate values of Index of Active Tectonics (IAT) are also located in the crush zone in Zagros. Crushing in this zone is because of the main fault mechanism of the Zagros region. The result in this paper confirms previous research in this region. At the eastern end of the study area, the value of Iat is high, which could be the result of the Sarab and Koh-e Sefid fault mechanisms.

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“…The use of the seven above-mentioned morphometric features and IRAT provide tectonic active regions in the studied area. We collected the division content of the results of previous studies [29] [30] [31]. Content of classification and morphometry of the seven indices in 45 stations in Bashagard mountain has been shown in Table 2.…”

Section: Irat Calculationmentioning

confidence: 99%

Assessment of Beshagard Mountain Tectonic Activity (South of Jazmurian Depration) Application IRAT Index

Atashan¹,

Pourkermani²,

Bafti³

et al. 2017

OJG

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Morphometry status of tectonic active areas around the Beshagard mountain is as a result of the interaction of neotectonic movements, erosion and subsidence processes. Bashagard mountain contains two attached mountains (GhaleTohi imountain and Bashagard mountain) with an altitude of 2000 meters at the south of the Jazmurian subsidence surrounded by Quaternary and Neogene. The boundary between the north Makran and Jazmurian subsidence is a fault that located between Band-e-Ziarat unit and western alluvial fan and units of Ganj, Mokhtarabad and Rameshk in the south. Tectonic activity has a significant impact on their morphometry status and drainage basin system. We studied geomorphological patterns of drainage and mountain fronts features for clear changes and high style of mountain. In this study, we studied seven geomorphological indicators for each basin including Vf, Bs, Smf, Sl, Af, RA, Hi between west and south mountain front of Jazmurian.Morphometric indexes were divided in three categories. The average of seven indicators is an index of relative tectonic activity (IRAT). The level of tectonic activity of each IRAT category was determined. Finally, tectonic activity was evaluated for each drainage basin. Results show good similarity between IRAT category and ratio of tectonic activity of the number of drainage basins. The streams profile shows the uplift movement in the western part of subsidence Jazmurian. Thus, the achievements obtained from the analysis of topographic indices, the region's river system and geomorphological evidence show the movements of uplift and movement of right-lateral strike-slip of Jiroft fault in the west and reverse faulting of Kranj and Jazmurian faults at east of subsidence Jazmurian that all indicates the diagonal tectonic movements.

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Quantitative analysis of relative tectonic activity in the Sarvestan area, central Zagros, Iran

Cited by 199 publications

References 25 publications

DEM-Based Analysis of Interactions between Tectonics and Landscapes in the Ore Mountains and Eger Rift (East Germany and NW Czech Republic)

DEM-Based Analysis of Interactions between Tectonics and Landscapes in the Ore Mountains and Eger Rift (East Germany and NW Czech Republic)

Relative tectonic activity classification in the Kermanshah area, western Iran

Assessment of Beshagard Mountain Tectonic Activity (South of Jazmurian Depration) Application IRAT Index

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