Structural analyses using slikenlines and folding, southwestern Iran(north of Kazerun)
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Abstract:
Qaemyeh area is located in 100 km West Shiraz and 40 km north of Kazerun. Structural formed in this region is resulted from segmentation Kamarij of the active Kazerun strike-slip fault, is part of the Zagros Simply Folded Belt and consist of NW-SE trending faults and folds sub-parallel to Zagros fold belt. The study area includes two faults, one normal and right lateral component that makes deformation dextral strike-slip fault Gurpi and Pabdeh, Sarvak and the other which Dextral strike-slip fault, that makes is another deformation Asmari. Strike-slip fault, Riedel shear fractures follow the pattern and proportion of Kazeron fault have been angle. In this study slickenlines fault data in order to reconstruct the orientations effective paleostress using inversion method picked up and was investigated. The position and trend of the principal stresses normal fault, respectively σ1 is NW, S71°W, 76º, σ2 is SE, S60°E, 06º and σ3 is NE, N31°E, 70º and strike- slip fault, σ1 is NE, N31°E, 07º, σ2 is SE, S60°E, 06º and σ3 is NW, S84°W, 80º respectively. To analysis the deformation area Structural cross-section perpendicular to the direction of the structures of NE-SW, were drawn. During this scrolling, structures such as dextral strike-slip fault and fold related faults, the structures of Precambrian and periods are Cenomanian geochronology respectively. The stress field around faults is related of the Kazerun active fault.
Language:
Persian
Published:
Iranian Journal of Geology, Volume:9 Issue:33, 2015
Page:
45
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