A New Viewpoint for Seismotectonic Zoning

Derakhshani, Reza; Eslami, Seyed Saeed

doi:10.3844/ajessp.2011.212.218

Cited by 14 publications

(12 citation statements)

References 21 publications

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“…Iran is considered to be tectonically active regarding its geological situation and features [14] , [15] , [16] , [17] , [18] , [19] and this paper has tried to present data valuable for examining the morphotectonic imprints which are discernible in the morphology of the fans in the southern part of Nayband fault, a right lateral strike slip fault in Central Iran, that forms the western border of Lut desert. Due to the close distance of these landforms to one of the area wherein five of the seven years was detected as the hottest spot on the Earth, having a surface temperature above 70 °C [20] , access to them is not easy and the present data is also valuable at this point of view.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Morphometric dataset of the alluvial fans at the southern part of Nayband fault, Iran

et al. 2018

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This data article provides a precise level data on alluvial fans of the western border of Lut desert, a unique location on the Earth, known as one of the hottest spot on the Earth. This data is essential for morphotectonic investigations and is valuable in the field of tectonic and geomorphology studies. It helps to evaluate the region from the viewpoint of tectonic activity by considering the dynamics of alluvial fans, climate and tectonic setting. The data which are presented for 68 quaternary alluvial fans, is taken by processing of remotely sensed Landsat satellite data, photogeology of aerial photographs, measuring on topographic maps and controlled by field checking. This data is useful for defining of a morphotectonic model of this limited access region considering the uplift of the source area along Nayband fault, as the basin–margin fault, respect to the base level.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Morphometric dataset of the alluvial fans at the southern part of Nayband fault, Iran

et al. 2018

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“…Morphotectonic investigation is an effective tool to enable us to detect and distinguish the procedures that occur on the landforms. Erosion and tectonic movements leave their imprints as a morphological components which their measurement is the best approach to relate the landforms with the neotectonic evolution of the area [1] , [2] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data on morphotectonic indices of Dashtekhak district, Iran

2017

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Morphotectonic indices by representing the longer period of time than recorded earthquake data, are useful in evaluating the tectonic activity of a region. Dashtkhak area is located in Kerman province of Iran, where one of the most active faults, Kouhbanan strike slip fault, passes through. This data article provides a precise level data on mountain fronts and valleys of Dashtkhak region that is fundamental for morphotectonic investigations of the relationship among geomorphology and tectonic activity. This data is valuable in the field of geology and geography. Mountain fronts and valleys data is more relevant in the field of tectonics and geomorphology. It helps to evaluate a region from the viewpoint of tectonic activity. The data which are presented for 31 mountain fronts and 61 valleys, is taken by processing of remotely sensed Landsat satellite data, photogeology of areal photographs, measuring on topographic maps and controlled by field checking. This data is useful for calculating of some morphotectonic indices such as sinuosity of mountain fronts (smf), mountain front faceting percentage (Facet%), the ratio of valley floor width to valley height (Vf) and the valley ratio (V).

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“…Strike-slip faults are primarily responsible for a number of earthquakes in Iran [16][17][18], particularly from a morphotectonic and seismotectonic viewpoint [19][20][21], and play a significant role in the present deformation of eastern Iran. Since the Pliocene, the dominant tectonic mode in the Iranian plateau and surrounding belts has shifted from compressional to strikeslip [22].…”

Section: Introductionmentioning

confidence: 99%

Paleostress Analysis in the Northern Birjand, East of Iran: Insights from Inversion of Fault-Slip Data

et al. 2022

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This research assessed stress regimes and fields in eastern Iran using fault-slip data and the tectonic events associated with these changes. Our stress analysis of the brittle structures in the Shekarab Mountains revealed significant changes in stress regimes from the late Cretaceous to the Quaternary. Reconstructing stress fields using the age and sense of fault movements showed that during the late Cretaceous, the direction of the maximum horizontal stress axes (σ1) under a compressional stress regime was ~N290°. This stress regime led to the uplifting of ophiolites and peridotites in eastern Iran. During the Eocene, the σ1 direction was NE-SW. The late Eocene and Oligocene stress states showed two distinct transpression and transtension stress regimes. This transition from transpression to transtension in the eastern Shekarab Mountains was the consequence of regional variations in stress regimes. The Quaternary stress state indicates that the tectonic regime in the Quaternary is strike-slip and the σ1 direction is ~N046°, which coincides with the current convergence direction of the Arabia–Eurasia plates. Our paleostress analysis revealed that four distinct stress regimes have been recognized in the area, including compressional, transtensional, transpressional, and strike-slip regimes. Our findings indicated that the diversity of the tectonic regimes was responsible for the formation of a variety of geological structures, including folds with different axes, faults with different mechanisms, and the current configuration of the Sistan suture zone.

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A New Viewpoint for Seismotectonic Zoning

Cited by 14 publications

References 21 publications

Morphometric dataset of the alluvial fans at the southern part of Nayband fault, Iran

Morphometric dataset of the alluvial fans at the southern part of Nayband fault, Iran

Data on morphotectonic indices of Dashtekhak district, Iran

Paleostress Analysis in the Northern Birjand, East of Iran: Insights from Inversion of Fault-Slip Data

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