슈미트해머 반발도와 OSL 연대에 기반한 둔두리 해식애의 형성과정 = Investigations on Rock Cliff Development in Dunduri, West coast of Korea, Using Schmidt Hammer Rebound Values and OSL Chronology

다국어 초록 (Multilingual Abstract)

Rock strength test on Dunduri cliff, Chungnam province, Korea, was performed using N-type Schmidt hammer and the depositional ages of the sediments overlying the cliff were derived using OSL dating method. The averaged R-values of the cliffs investigated here were lower than those observed from the shore platforms, but with larger scatter in the former. R-values were negatively correlated to cliff face retreat, implying that the irregularity of the coastal rock faces was closely related to lithology as the weaker rocks retreated much faster than the harder rocks. The overlying deposit of the cliff tends to be thicker at valleys and were poorly sorted with angular to subangular clasts in a matrix of silt. The OSL ages (ca. 70-77ka) presented here were older than the previously reported exposure ages (ca. 7-30ka) of the cliff face. Therefore, it is likely that the present sea cliff was developed by expansion of the platform which had been covered by slope deposits since the last interglacial and exposed again during the Holocene.

참고문헌 (Reference)

1 김성환, "한국의 지형학 연구 - 해안지형 일반 -" 한국지형학회 19 (19): 1-15, 2012

2 최광희, "태풍의 통과로 인한 해안사구 지형의 침식과 회복" 한국지형학회 19 (19): 17-27, 2012

3 권혁재, "태안반도와 안면도의 해안지형" 6 : 261-287, 1981

4 장동호, "침식기준목을 이용한 파도리 해식애 사면의 침식·후퇴율 산정" 한국지형학회 19 (19): 71-82, 2012

5 장동호, "침식기준목 측정을 통한 안면도 둔두리 해식애의 단기간 침식 변화" 기후연구소 7 (7): 161-173, 2012

6 최성길, "진도 내만지역 Shore Platform의 형태와 발달과정에 관한 연구" 31 : 16-31, 1985

7 박동원, "제주도 파식대에 대한 지형학적 연구" 8 : 1-10, 1981

8 최성길, "우리나라 서해안의 Shore Platform연구: 서산·보령 해안을 중심으로" 12 : 23-42, 1982

9 권혁재, "서해안의 해안침식" 18 : 137-155, 1996

10 나기창, "서산층군의 층서 및변성작용" 1 : 33-39, 1982

11 우한별, "다중시기 항공사진과 현장조사를 통한 해안침식 변화 연구: 태안반도를 사례로" 한국지형학회 17 (17): 71-83, 2010

12 김종연, "기반암 하상 미지형과 슈미트 해머 반발 값과의 관계에 대한 연구" 한국지형학회 19 (19): 51-69, 2012

13 Choi, K. H, "Using Cosmogenic 10Be Dating to Unravel the Antiquity of a Rocky Shore Platform on the West Coast of Korea" 28 (28): 641-657, 2012

14 Trenhaile, A. S, "The geomorphology of rock coasts" Oxford University Press 1987

15 Sumner, P, "The effect of rock moisture on Schmidt hammer rebound: tests on rock samples from Marion Island and South Africa" 27 (27): 1137-1142, 2002

16 Gill, E, "The dynamics of the shore platform process, and its relation to changes in sea level" 80 : 183-191, 1967

17 Goudie, A. S, "The Schmidt hammer in geomorphological research" 30 (30): 703-718, 2006

18 Pom-yong Choi, "Subdivision of the Upper Paleozoic Taean Formation in the Anmyeondo-Boryeong area, west Korea: a preliminary approach to the sedimentary organization and structural features" 한국지질과학협의회 12 (12): 373-384, 2008

19 Lim, D. I, "Seacliff erosion and retreat in semi-enclosed macrotidal embayment: Hampyung Bay, West Coast of Korea" SI56 : 732-736, 2009

20 Thornton, L. E, "Rock strength: a control of shore platform elevation" 22 (22): 224-231, 2006

21 Trenhaile, A. S, "Rock coasts, with particular emphasis on shore platforms" 48 (48): 7-22, 2002

22 Trenhaile, A. S, "Rock coast inheritance: an example from Galicia, northwestern Spain" 24 (24): 605-621, 1999

23 Naylor, L, "Rock coast geomorphology: recent advances and future research directions" 114 (114): 3-11, 2010

24 Pierre, G, "Processes and rate of retreat of the clay and sandstone sea cliffs of the northern Boulonnais (France)" 73 (73): 64-77, 2006

25 Bray, M. J, "Prediction of soft-cliff retreat with accelerating sea-level rise" 13 (13): 453-467, 1997

26 Trenhaile, A. S, "Modeling the role of weathering in shore platform development" 94 (94): 24-39, 2008

27 Trenhaile, A. S, "Modeling the effect of late Quaternary interglacial sea levels on wavecut shore platforms" 172 (172): 205-223, 2001

28 Gill, E, "Micro-erosion meter measurements of rock wear on the Otway coast of southeast Australia" 52 (52): 141-156, 1983

29 Stephenson, W. J, "Measuring erosion rates using the micro-erosion meter: 20 years of data from shore platforms, Kaikoura Peninsula, South Island, New Zealand" 131 (131): 209-218, 1996

30 Choi, J. H, "Luminescence dating of well-sorted marine terrace sediments on the southeastern coast of Korea" 22 (22): 407-421, 2003

31 Murray, A. S, "Luminescence dating of quartz using an improved singlealiquot regenerative-dose protocol" 32 : 57-73, 2000

32 Kennedy, D. M, "Lithological control on the elevation of shore platforms in a microtidal setting" 31 (31): 1575-1584, 2006

33 Regard, V, "Late Holocene sea cliff retreat recorded by 10Be profiles across a coastal platform: Theory and example from the English Channel" 11 : 87-97, 2012

34 Lambeck, K, "Into and out of the Last Glacial Maximum: sea-level change during Oxygen Isotope Stages 3 and 2" 21 (21): 343-360, 2002

35 Selby, M, "Hillslope Materials and Processes" Oxford University Press 1993

36 de Lange, W. P, "Estimating long-term cliff recession rates from shore platform widths" 80 (80): 292-301, 2005

37 Stephenson, W, "Decadal scale micro erosion rates on shore platforms" 114 (114): 22-29, 2010

38 Stephenson, W. J, "Coastal geomorphology into the twentyfirst century" 27 (27): 607-624, 2003

39 Na, K. C, "A study on the metamorphism in the southwestern part of Gyeonggi Massif" 1 : 25-33, 1992

40 Basu, A, "A method for normalization of Schmidt hammer rebound values" 41 (41): 1211-1214, 2004

41 이병주, "1:250,000 대전 지질 도폭 설명서"