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http://dx.doi.org/10.9719/EEG.2012.45.3.295

Identification of the Singal Fault Zone in the Kiheung Reservoir Area by Geotechnical Investigations  

Gwon, Sun-Dal (Department of Earth System Sciences, Yonsei University, Heesong Geotek Co., Ltd.)
Kim, Sun-Kon (Hyundai Development Company)
Lee, Soung-Han (Hyundai Development Company)
Park, Kwon-Gyu (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Economic and Environmental Geology / v.45, no.3, 2012 , pp. 295-306 More about this Journal
Abstract
In this study, the Singal fault zone in the Gyeonggi massif is identified in the Kiheung area. Geotechnical investigations were carried out to locate and characterize of the Singal fault zone in the Kiheung reservoir area. The N-S striking Shingal fault is known to be a Riedel-type strike-slip fault within the Choogaryung rift. Along the fault zone, 62 bore holes were drilled and electrical resistivity survey of about 11km, and vibroseis seismic refraction and reflection survey of about 500m were done. From the result of investigations, it is found that the fault zone, consisting mainly of gouge and breccia, has maximum width of 300 meters with anastomosing geometry of secondary fractures developed subparallel to the fault zone. We interpret these geometric features to be the result of structural development of flower-structure type at the restraining band of strike-slip fault. However, there are uncertainties of this interpretation because there are virtually no outcrops in the area. Further investigation to understand geometric features and linkage style of the fault zone.
Keywords
Shingal fault; Choogaryung rift; strike-slip fault; drilling; resistivity survey;
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Times Cited By KSCI : 5  (Citation Analysis)
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