Volume 9, Issue 2 (0Abstract.pdf 2010)
2010, 9(2): 417-436 |
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p M, Alipur R. Main Recent Fault related Active Tectonic around Rudbar- Lorestan Dam Site. Journal title 2010; 9 (2) :417-436
URL: http://jsci.khu.ac.ir/article-1-1371-en.html
URL: http://jsci.khu.ac.ir/article-1-1371-en.html
Abstract: (7544 Views)
Rudbar Lorestan dam is constructed on Abrudbar River, 100 km south of Aligudarz city. There is a segment of Main Recent Fault(MRF) called Saravand – Baznavid Fault(SBF) at 1.6 km south of dam site. Using Automatic Extraction Method, based on STA Algorithm, lineaments were extracted from sattelite images and Shaded Relif Model. For detailed structural analysis, the study area was divided into three zones based on geological map. In Eslamabad Fault zone, Eslamabad fault is the main structural element, That is of P-type fractures likely. The main structure in the SBF zone is Saravand – Baznavid active Fault, which caused the drainage to be displaced as much as 500–1000m in the northern height of study area. In the Dam axis zone, the main important structure is F1 fault. This fault is about 150 meters in length with right lateral strike slip component. Thermoluminescence dating, sence of movement, dominant slikenside and the orientation of groove marks on the fault plane indicate this fault to be active. Large dicplacements along strike- slip faults in the study area, such as F1 fault, have been considered using shear zone and enechelon models. However the main faults in the study area is SBF, that relate in an enechelon pattern to seismic Dourud fault and has the right potential to movement in the future.
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