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http://dx.doi.org/10.5467/JKESS.2015.36.1.1

Kinematics and ESR Ages for Fault Gouges of the Quaternary Jingwan Fault, Dangjin, western Korea  

Choi, Pom-Yong (Korea Institute of Geoscience and Mineral Resources)
Hwang, Jae Ha (Korea Institute of Geoscience and Mineral Resources)
Bae, Hankyoung (Department of Geology, Kangwon National University)
Lee, Hee-Kwon (Department of Geology, Kangwon National University)
Kyung, Jai Bok (Department of Earth Science Education, Korea National University of Education)
Publication Information
Journal of the Korean earth science society / v.36, no.1, 2015 , pp. 1-15 More about this Journal
Abstract
In order to outline the kinematics and movement history of a new Quaternary fault, Jingwan Fault in Dangjin, West Korea, we analyzed the geometry of the fault zone composed of a few gouge zones, and made ESR dating for fault gouge materials. The $N55^{\circ}E$ striking Jingwan Fault is a normal fault and exhibits a gradual change in dip (gentle in the lower part, steep in the upper part), indicating a listric fault. As for the fault gouge zone, its thickness varies and reaches 2~3 cm in the lower part or between basement rocks, and 20~30 cm in the middle-upper part or between the basement and Quaternary deposit. It is observed in the latter case that more than three gouge zones develop with different colors, and branch out and re-merge, or they are partly superimposed, indicating different movement episodes. The cumulative displacement is estimated to be about 10 m using the geological cross-sections, from which it is inferred that the total length of fault may be about 2.5 km on the basis of the empirical relation between cumulative displacement and fault length. Therefore, a more study would be needed to verify the entire fault length. The results of ESR dating for three gouge samples at different spots along the fault yields ages of $651{\pm}47$, $649{\pm}96$, and $436{\pm}66ka$, indicating at least two movement episodes. Slickenlines observed on the fault planes indicate a pure dip slip (normal faulting), which suggests that the ENE-WSW trending Jingwan Fault was presumably moved under a NNW-SSE extensional environment.
Keywords
Quaternary Jingwan Fault; gouge zone; ESR age; West Korea; active fault;
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1 Choi, P.Y., Nakae, S. and Kim, H., 2011, Fault tectonic analysis of Kii peninsula, Southwest Japan: Preliminary approach to Neogene paleostress sequence near the Nankai subduction zone. Island Arc, 20, 455-476.   DOI
2 Chwae, U., 1998, Possibility of active fault on the Yangsan Fault System. Proceedings of EESK Conference-Fall 1998, 2, 2, 199-209.
3 Eguchi, T., 1983, Tectonic stress field in East Eurasia. Physics of the Earth and Planetary Interiors, 33, 318-327.   DOI
4 Grun, R., 2009, The DATA program for the calculation of ESR age estimates on tooth enamel. Quaternary Geochronology, 4, 231-232.   DOI
5 Hong, N. and Lee, H.K., 2012, Structural features and ESR dating of the Keumwang fault at Eumseong-gun, Chungcheongbuk-do (in Korean with English abstract). Journal of Geological Society of Korea, 48, 473-489.
6 Hong T.K. and Choi, H., 2012, Seismological constraints on the collision belt between the North and South China blocks in the Yellow Sea. Tectonophysics 570-571, 102-113.   DOI   ScienceOn
7 Jun, M.S., 1991, Body-wave analysis for shallow intraplate earthquakes in the Korean Peninsula and Yellow Sea. Tectonophysics, 192, 345-357.   DOI   ScienceOn
8 Kee, W.S., Kim, B.C., Hwang, J.H., Song, K.Y. and Kihm, Y.H., 2007, Structural Characteristics of Quaternary reverse faulting on the Eupcheon Fault, SE Korea (in Korean with English abstract). Journal of Geological Society of Korea, 43, 311-333.
9 Kim, D.H. and Hwang, J.H., 1982, Geological map of Daesan-Igog Sheet (1:50,000). KIER, Daejeon, 27 p.
10 Kim, Y.S. and Sanderson, D.J., 2005, The relationship between displacement and length of a fault: a review. Earth-Science Review,68, 317-334.   DOI
11 Lee, S.M., Kim, H.S. Na, K.C. and Park, B.Y, 1989, Geological report of Dangjin-Janggohang Sheet (1:50,000). KIER, Daejeon, 15 p.
12 Okada, A., 1999, Yangsan and Ulsan (active) fault systems in the southeastern part of Korean Peninsula. Proceedings Korea-Japan/Japan-Korea Geomorphological Conference, Chonju, Korea, 13-16.
13 Na, K.C., 1992, A study on the metamorphism in the southwestern part of Gyeonggi Massif. Journal of Petrological Society of Korea, 1, 25-33.
14 Ryoo, C.R. and Yang, K., 1996, Quaternary fault in the vicinity of Kyeongju city, Korea (abstract). Programs of International Symposium on Natural History and Environment, 67.
15 Ryoo, C.R., Lee, B.J. and Chwae, U., 2000, Quaternary fault and its remote sensing image in the southeastern Korea. CCOP (Coordinating Committee for Costal and Offshore Geoscience Programmes in East and Southeast Asia) Technical Bulletin, 29, 5-28.
16 Ryoo C.R., Lee B.J., Son, M., Lee, Y.H., Choi, S.J. and Chwae U., 2002, Quaternary faults in Gaegok-ri, Oedong-eup, Gyeongju, Korea (in Korean with English abstract). Journal of Geological Society of Korea, 38, 309-323.
17 Yang, J.S. and Lee, H.K., 2014, Quaternary Fault Activity of the Yangsan Fault Zone in the Samnam-myeon, Ulju-gun, Ulsan, Korea. Economical and Environmental Geology, 47, 17-27.   DOI
18 Chang, T.W. and Lee, S.Y., 1982, Geological map of Seosan-Mohang Sheet (1:50,000). KIER, Daejeon, 30 p.
19 Choi, P.Y., 2005, Geometric analysis of the Quaternary Eupchon Fault: an interpretation of trench sections (in Korean with English abstract). Journal of the Geological Society of Korea. 41, 129-140.
20 Choi, P.Y., Kwon, S.K., Hwang, J.H. Lee, S.R. and An, G.O., 2001, Paleostress analysis of the Pohang-Ulsan area, Southeast Korea: Tectonic sequence and timing of block rotation. Geosciences Journal, 5, 1-18.   DOI
21 Choi, P.Y., Ryoo, C.R., Kwon, S.K., Chwae, U., Hwang, J.H., Lee, S.R. and Lee, B.J., 2002a, Fault tectonic analysis of the Pohang-Ulsan area, SE Korea: Implications for active tectonics. J. Geol. Soc. Korea, 38, 33-50.
22 Choi, P.Y., Lee, C.B., Ryoo, C.R., Choi, Y.S., Kim, J.Y. Hyun, H.J., Kim, Y.S., Kim, J.Y. and Chwae, U., 2002b, Geometric analysis of the Quaternary Malbang Fault: Interpretation of borehole and surface data(in Korean with English abstract). Journal of Geological Society of Korea, 38, 163-174.
23 Choi, P.Y., Kwon, S.K., Hwang, J.H., Lee, S.R., Angelier, J. and An, G.O., 2002c, Late Mesozoic-Cenozoic tectonic sequence of Southeast Korea. In Jin, M.S. et al. (eds.), Mesozoic sedimentation, igneous activity and mineralization in South Korea. The 1st and 2nd Symposiums on the Geology of Korea, Special Publication 1, KIGAM, Daejeon, 52-102.
24 Choi, P.Y., Park, K.H., Park, K.S., Hwang, J.H. and Kwon, S.K., 2007, Quaternary tectonic characteristics of Southeast Korea (in Korean with English abstract). Geology of Korea Special Publication 3, KIGAM, Daejeon, 3, 91-104.
25 Kyung, J.B. and Chang, T.W., 2001, The latest fault movement on the Northern Yangsan fault zone around the Yugye-ri area, Southeast Korea (in Korean with English abstract). Journal of Geological Society of Korea, 37, 563-577.
26 Kyung, J.B., 1997, Paleoseismological study of midnorthern part of the Ulsan Fault by the trench method. Journal of Engineering Geology, 7, 81-90.
27 Kyung, J.B., Kim, S.K., Jo, W.R., Okada, A., Watanabe, M., Suzuki, Y. and Oike, K., 1995, Fault outcrops and geomorphic criteria of the occurrence of the great earthquake in the central part of the Ulsan Fault (Korea). Proceedings of 50th Symposium, Geol. Soc. Korea, 99.
28 Kyung, J.B., Oh, K.S. and Oike, K., 1996, Paleoseismological approach in the southeastern part of the Korean peninsula. Proceedings of 1996 Symposium on Seismology in East Asia, 38-47.
29 Lee, B.J., Ryoo, C.R. Cho, D.L., Choi, S.J. and Chwae, U., 1999a, Quaternary crustal deformation in the southeastern part of the Korean Peninsula. Gondwana Research, 2, 578-582.   DOI
30 Lee B.J., Ryoo C.R. and Chwae U., 1999b, Quaternary Faults in the Yangnam area, Kyongju, Korea (in Korean with English abstract). Journal of Geological Society of Korea, 35, 1, 1-14.
31 Lee, H.K. and Schwarcz, H.P., 1994, Criteria for complete zeroing of ESR signals during faulting of the San Gabriel fault zone, Southern California. Tectonophysics, 235, 317-337.
32 Lee, H.K. and Schwarcz, H.P., 2001, ESR dating of the subsidiary faults in the Yangsan fault system, Korea. Quaternary Science Reviews, 20, 999-1003.   DOI
33 Lee, H.K. and Yang, J.S., 2007b, ESR dating of the Eupchon fault, South Korea. Quaternary Geochronology, 2, 392-397.   DOI