Browse > Article
http://dx.doi.org/10.9720/kseg.2015.4.473

Characteristics and Implications of Lava Tubes from Geophysical Exploration in Jeju Island  

Jeon, Yongmun (World Heritage and Mt. Hallasan Research Institute, Jeju Special Self-Governing Provincial Government)
Ki, Jin Seok (World Heritage and Mt. Hallasan Research Institute, Jeju Special Self-Governing Provincial Government)
Koh, Su Yeon (Geo Management Company GMC)
Kim, Lyoun (Cave Research Institute of Korea)
Ryu, Choon Kil (Korea Institute of Geological Environments)
Publication Information
The Journal of Engineering Geology / v.25, no.4, 2015 , pp. 473-484 More about this Journal
Abstract
Geophysical exploration using electric resistivity, ground penetrating radar (GPR), and impedance high-frequency (ZHF) surveys was conducted in Gujwa-eup, Jeju City, Jeju Island, an island in the Korea Strait, to confirm the existence of new caves near known caves. The exploration revealed a number of anomaly zones, presumed to be caves; 27 sites at suitable locations and depth ranges were selected for drilling and further surveys. However, contrary to predictions, most of the anomaly zones were clinker layers or paleosols intercalated with lavas. Only five boreholes intersected caves. The clinker layers and paleosols were possibly detected as anomalies owing to their different physical properties from the other rocks. Two of the five cave-finding boreholes penetrated Yongcheon Cave; a new cave was found at the other. The two boreholes that penetrated Yongcheon Cave were drilled in areas where the cave has not been previously reported, and thus helped correct an error in the cave distribution map. The cave newly discovered in this boring exploration is 180 m long, and it is connected to the upstream part of Dangcheomul Cave (110 m). The cave contains well-developed lava helictites, lava levees, and ropy structures; carbonate speleothems such as soda straws, stalagmites, columns, and curtain shawls are also well preserved. Notably, the unique shape of the carbonate speleothems is attributed to their growth in relation to the cavern water that flowed into the cave along plant roots.
Keywords
geophysical exploration; lava tube; cave speleothem; Jeju Island; Yongcheon Cave; Dangcheomul Cave;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
1 Benson, A. K., 1995, Applications of ground penetrating radar in assessing some geological hazards: examples of groundwater contamination, faults, cavities, Journal of Applied Geophysics, 33, 177-193. doi: 10.1016/ 0926-9851(94)00029-N.   DOI
2 Collins, M. E., Crum, M., and Hanninen, P., 1994, Using ground-penetrating radar to investigate subsurface karst landscape in North-Central Florida, Geoderma, 61(1-2), 1-15. doi: 10.1016/0016-7061(94)90008-6.   DOI
3 Dourado, J. C., Filho, W. M., Braga, A. C. O., and Nava, N., 2001, Detection of cavities in sandstone using gravity, resistivity and GPR methods, Brazilian Journal of Geophysics, 19(1), 19-32.
4 Driad, L. and Piwakowski, B., 2002, Detection and characterisation of underground cavities using high resolution seismic reflection (HRSR), Proceeding 8th Meeting Environmental and Engineering Geophysics, Aveiro, Portugal, 31-34.
5 Hong, S. W., Woo, K. S., Yi, S. H., and Jo, K. N., 2012, Paleoclimatic reconstructions using textural data of the stalagmite from the Dangcheomul Cave, Jeju Island for the past 2,000 years, Journal of the Geological Society of Korea, 48(6), 445-458 (in Korean with English abstract).
6 Jeju Special Self-governing Province, 2009a, Geophysical research report of Manjangggul Lava Tube, 104p (in Korean).
7 Jeju Special Self-governing Province, 2009b, Report of academic research for Yongcheon Cave, 71-82 (in Korean).
8 Jeju Special Self-governing Province, 2011, Report of academic research for Namjimi Cave, 92p (in Korean).
9 Jeon, Y. M., Ryu, C. K., Yoon, W. S., Kang, S. S., and Song, S. T., 2013, Characteristics and interpretation of subsurface diatreme deposits from western Jeju Island. Journal of the Geological Society of Korea, 49(5), 537-551 (in Korean with English abstract).
10 Ji, H. S., Woo, K. S., Kim, R., Choi, D. W., Yang, D. Y., and Park, B. K., 2008, The age and origin of carbonate sand dunes in Gimnyeong area, Jeju Island, Journal of the Geological Society of Korea, 44, 615-628 (in Korean with English abstract).
11 Ji, H. S., Woo, K. S., and Yang, D. Y., 2010, Little Ice Age recorded in the YC-2 stalagmite of the Yongcheon Cave, Jeju Island (South Korea), Korean Meteorlogical Society, 20(3), 261-271 (in Korean with English abstract).
12 Kwon, B.D., Lee, H.S., Rim, H.R. and Oh, S,H, 2000, Effective Geophysical Methods in Detecting Subsurface Caves: On the Case of Manjang Cave, Cheju Island. Jour. Korean Earth Science Society, 21(4), 408-422.
13 Park, K. H., Cho, D. L., and Kim, J. C., 2000a, Geological report of the Moseulpo-Hanlim sheet (1:50,000), Korea Institute of Geology, Mining and Materials, 56 p (in Korean with English abstract).
14 Park, S. G., Kim, C. R., Son, J. S., Yi, M. J., and Kim, J. H., 2009, Detection of cavities in a karst area by means of a 3D electrical resistivity technique, Exploration Geophysics, 40(1), 27-32.   DOI
15 Sohn, Y. K. and Yoon, S. H., 2010, Shallow-marine records of pyroclastic surges and fallouts over water in Jeju Island, Korea, and their stratigraphic implications, Geology, 38(8), 763-766.   DOI
16 Song, G, J., Yun, H, S., Jang, I, H., Choi, Y, S., and Seo, Y, S., 2015, Analysis of scale and slope of limestone cavities using borehole drilling and geophysical investigations. The Journal of Engineering Geology, 25(2), 251-263 (in Korean with English abstract).   DOI
17 Woo, K. S., 2005, Caves: A Wonderful Underground. Hollym, Seoul, 230p.
18 Woo, K. S., Kim, J. C., Choi, D. W., Kim, J. K., Kim, R., and Nehza, O., 2008, The origin of erratic calcite speleothem in the Dangcheomul Cave (lava tube cave), Jeju Island, Korea, Quaternary International, 176-177, 70-81.   DOI
19 Woo, K. S., Jo, K. N., Yi, S. H., Yang, D. Y., and Li, H.- C., 2013, Paeloclimatic investigation using trace elemental compositions of the YC-1 stalagmite, Yeongcheon Cave, Jeju Island, Korea for the past 600 years, Journal of the Geological Society of Korea, 49(3), 325-338 (in Korean with English abstract).