Folding pattern in the Fars province, Zagros folded belt: case study on the Karbasi and Khaftar anticlines, interior Fars, Iran

Maleki, Zahra; Arian, Mehran; Solgi, Ali

doi:10.5194/sed-7-2347-2015

Cited by 23 publications

(8 citation statements)

References 20 publications

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“…Our results compatible with on previous work on the neotectonic regime in Iran [19]- [21] which it is implying Zagros in south Iran is the most active zone [22]- [32]. Then, Alborz [33]- [38] and Central Iran [39]- [45] have been situated in the next orders.…”

Section: Resultssupporting

confidence: 92%

Structural Style in the Zagros Fold-Thrust Belt: The Gavbast Anticline, Coastal Fars

Vaseghi¹,

Maleki²,

Arian³

2016

OJG

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The Gavbast anticline is located in the Coastal Fars area of the Zagros folded belt, with north-south trend. The study anticline is restricted to the Bavush and Paskhand anticlines from North, the Gezzeh and Dehnow anticlines from South, the Varavi anticline from West and Nakh anticline from East (Figure 1). Description of fold geometry is important because they allow comparisons within and between folds and pattern-recognition in addition to occurrence and distribution of fold systems. The main goal of this paper is to define folding style of the Gavbast anticline and define structural features affected on them in the study area. In this research, we used the Tectonics FP software, Global Mapper software and geological maps and reports of Iranian National Oil Company. In addition, we used common classification of fold for indicating of folding mechanism of the Tabnak anticlinal structure. In the Gavbast anticline, fold style elements in all parts of this anticline have been calculated and analyzed for indicating of folding style mechanism. The results of this method have been shown the folding geometry changes accurately. The Gavbast anticline is gentle in structural sections D-D' and G-G' to K-K'. The anticline is an open fold in the L-L' section. Also fold type in the E-E' and F-F' sections of the Gavbast anticline is steeply inclined sub-horizontal. These sections are located between the Razak (western part) and Hendurabi fault (eastern part). It seems that E-E' and F-F' parts in the Gavbast anticline have been suffered most deformation affected by the Razak and Hendurabi faults. At the end of, it seems that, the Razak and Hendurabi faults have major effects on folding style. This structure is a very good sample for effect of strike slip faults on the folding geometry and for this reason; the Gavbast anticline is considered a special structural style in the Zagros fold-thrust Belt.

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Section: Resultssupporting

confidence: 92%

Structural Style in the Zagros Fold-Thrust Belt: The Gavbast Anticline, Coastal Fars

Vaseghi¹,

Maleki²,

Arian³

2016

OJG

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“…Based on previous work on the salt and mud diapirism [27]- [40] and neotectonic regime in Iran [41]- [44], Zagros in south Iran is the most active zone [45]- [67]. Then, North Iran [68]- [106] and Central Iran [107]- [121] have been situated in the next orders.…”

Section: Resultsmentioning

confidence: 99%

Earthquake Hazard Zonation and Seismotectonics of the Bandar Abbas Area, Zagros, Iran

Abdolizadeh¹,

Maleki²,

Arian³

2016

OJG

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The study area (Bandar Abbas area) is located in the Zagros fold-thrust belt as part of the AlpineHimalayan orogenic belt as seismically active belt. This area is located between the Makran accretionary prism and Oman Mountains from east and the Zagros collision belt from west as transition zone. The Zagros fold-thrust belt from the viewpoint of seismicity, is very active and Iran's major earthquake-prone area. The study area has main active faults and some high magnitude earthquakes occurred in current century. Because the Bandar Abbas area has high seismic activity, the main goal of this research is prepared to earthquake hazard zonation and identify hazardous seismic zones, based on Decision Support System method for define active seismotectonic in this area. The seismotectonic study has been done in 30 -100 km radius, for Bandar Abbas area. In this research, we used Decision Support System method by in corporate and combine essential data such as seismic data from 1900-2015, Digital Elevation Model of the study area (DEM), surface geology, seismicity parameters, soil classification and location main faults. In this research the Decision Support System (DSS) base on GIS database is used for calculate seismicity parameters. Based on the relative risk of earthquake zonation map, the Bandar Abbas area is located from the north to the East and from the South to the East, in area with high seismic risk (with Orange color). Some small regions with very high relative seismic risk have been limited to these areas with high risk. Also from north to west and from south to west "the study area" is located mainly in the area with earthquake relative risk of in areas with moderate and low relative risk of earthquakes. In the far southwestern region of the study, the small area is located in an area with high and very high seismic relative risk and this case may be due to the activity of the Mountain Front Fault (MFF) and Zagros Fore deep Fault (ZFF). Finally, the study area has been affected by active faults and it causes high vulnerability of the study area in the face of a possible occurrence of earthquakes. Based on of Seismotectonic investigations, there are existed minor faults of the Zagros fault from East to West and in the middle part. This case has been caused some parts in the study area with low and * Corresponding author. S. Abdolizadeh et al. 211moderate seismic risk to be considered in the face of possible earthquakes and seismic damages, as an area with high seismic risk.

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“…In the foreland, folds tend to be upright and open, while in the hinterland they tend to be isoclinal and inclined/recumbent, with vergence toward the hinterland. At depth, these folds tend to die out at décollements and may be associated with fault-ramp folds, especially toward the foreland [30].…”

Section: The Description Of Foldsmentioning

confidence: 99%

Structural Style in the Khalfani Anticline, Coastal Fars, Zagros Fold-Thrust Belt

Baghbanan¹,

Maleki²,

Pourkemani³

2015

OJG

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The Khalfani anticline is located in the Coastal Fars (Zagros, adjacent Persian Gulf). This anticline with Northwest-Southeast trend is a fault bend fold. In the study area, the Khalfani anticline has increased elevation from West to East with three distinct humps. The major faults in the study area are the Hendurabi and the Razak sinistral strike slip faults. Because analysis of fold and their folding styles in different parts system is important, the analysis of folding style elements is necessary for structural studies. The main aim of this research is structural style analysis based on fold style elements in the Khalfani anticline. This analysis is important for progress in hydrocarbons exploration in the Coastal Fars area. In this research, we used Tectonics FP and Global Mapper Software for preparing some data in our study. In addition, we used the common classification of folds for our research. Based on given results, the folding pattern of this anticline has indicated that the fold style is same in different parts of the Khalfani anticline. In the study area, based on classifications of fold in different methods, fold style is same together. Fold, with close sideways requires special attention as structural view; then the Khalfani Anticline with close style in all parts has special deformation and folding style. It seems that in the study area, folding style and variation of structural style have been created by effect of the Razak and the Hendurabi sinistral strike slip fault. Because these faults are basement or deep-seated faults, special folding style and special deformation can be formed in the study area. In addition, the Khalfani anticline in the study area has restricted within the Razak and the Hendurabi sinistral strike slip faults.

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Folding pattern in the Fars province, Zagros folded belt: case study on the Karbasi and Khaftar anticlines, interior Fars, Iran

Cited by 23 publications

References 20 publications

Structural Style in the Zagros Fold-Thrust Belt: The Gavbast Anticline, Coastal Fars

Structural Style in the Zagros Fold-Thrust Belt: The Gavbast Anticline, Coastal Fars

Earthquake Hazard Zonation and Seismotectonics of the Bandar Abbas Area, Zagros, Iran

Structural Style in the Khalfani Anticline, Coastal Fars, Zagros Fold-Thrust Belt

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