The Wangsan Fault in the Gyeongju area shows the largest known displacement of about 28 m among the Quaternary reverse faults in South Korea. Recent optically stimulated luminescence (OSL) age data of the Quaternary deposits cut by the fault have been interpreted as suggesting that the time-averaged slip rate and maximum recurrence interval of the fault movement are 0.52 mma -1 and 50 ka, respectively. If considering the thickness of the Quaternary deposits exposed and assuming a uniform sedimentation rate, however, the slip rate and recurrence interval might be about five times higher and shorter, respectively.
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ACKNOWLEDGEMENTS: We acknowledge a fruitful discussion with D.G. Hong on OSL age data and figure drawings by B. Song. We also thank Y.K. Sohn and C.-E. Baag for the improvement of the manuscript and H. Kim for the editorial work. This work was supported by KOSEF grant R02-2002-000-00022-0 to JHR.
- OSL age
- Quaternary fault
- Slip rate
- Wangsan Fault
ASJC Scopus subject areas
- General Environmental Science
- General Earth and Planetary Sciences