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Fe-rich Sepiolite from the Basalt Fault Gouge in the South of Pohang, Korea
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 Title & Authors
Fe-rich Sepiolite from the Basalt Fault Gouge in the South of Pohang, Korea
Son, Byeongseo; Hwang, Jinyeon; Lee, Jinhyun; Oh, Jiho; Son, Moon; Kim, Kwanghee;
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The black fault gouge having 5-10 cm width occurs at the center of the fault fracture zone developed at the early Miocene basaltic rocks that is located at the Geumkwang-ri area in Donghae-myeon, Pohang city. The fault gouge was analyzed with XRD, FTIR, DTA/TGA, SEM, TEM, XRF, EPMA. Analyses reveal that the fault gouge is Fe-rich sepiolite having high iron content. Alteration minerals observed in the fault fracture zone are mainly smectite. The significant amount of smectite also observed in the basaltic parent rocks. The occurrence of constituent minerals indicates that the Fe-rich sepiolite was crystallized by faulting and hydrothermal alteration after the consolidation of basaltic rock at the deep place.
sepiolite;fault gouge;basalt;smectite;hydrothermal alteration;
 Cited by
Arranz, E., Lago, M., Bastida, J., Gale, C., Soriano, J., and Ubide, T. (2008) Hydrothermal macroscopic Fe-sepiolite from Oujda Mounts (Middle Atlas, Eastern Morocco). Journal of African Earth Sciences, 52(3), 81-88. crossref(new window)

Brauner, K. and Preisinger, A. (1956) Struktur und Enstehung des Sepiolites. Tschermak's Mineralogische und Petrographische Mitteilungen, 6, 120-140. crossref(new window)

Caillere, S. (1936) Nickeliferous sepiolite. Bulletin de la Societe francaise de mineralogie, 59, 163-326.

Callere, S. and Henin, S. (1961) X-ray identification and crystal structures of clay minerals (edited by Brown, G.). Mineral. Soc., London, 325-342.

Cheon, Y., Son, M., Song, C.W., Kim, J.S., and Sohn, Y.K. (2012) Geometry and kinematics of the Ocheon Fault System along the boundary between the Miocene Pohang and Janggi basins, SE Korea, and its tectonic implications. Geosciences Journal, 16(3), 253-273. crossref(new window)

Choi, S.H., Lee, J.H., and Cho, S.H. (2012) A Study on the Sepiolite from the Dolomite Mine, Jangsu, Jeonbuk. Journal of the Mineralogocal Soceity of Korea, 25(1), 37-40 (in Korean). crossref(new window)

Hoe, S.G. and Hayashi, M. (1975) A new occurrence of ferriferous sepiolite from the Akan-Cho, Eastern Hokkaido, Japan. Journal of Mineralogy, Petrology and Economic Geology, 70, 440-446 (in Japanese with English abstract).

Hwang, J. Y. (1991). Mineralogy of sepiolite from the Ulsan Serpentine mine. Journal of the Mineralogocal Soceity of Korea, 4, 108-118 (in Korean with English abstract).

Imai, N., Otsuka, R., Natamura, T., and Inoue, H. (1966). A New Occurrence of Well-Crystallized Sepiolite from the Kuzu District, Tochigi Prefecture. Central Japan. Clay Science, 6(1), 30-40 (in Japanese with English abstract).

Isphording, W.C. (1973) Discussion of the occurrence and origin of sedimentary palygorskite-sepiolite deposits. Clays and Clay Minerals, 21, 391-401. crossref(new window)

Kim, M.C., Kim, J.S., Jung, S., Son, M., and Sohn, Y.K. (2011) Bimodal volcanism and classification of the Miocene basin fill in the northern area of the Janggi-myeon, Pohang, Southeast Korea. Journal of the Geological Society of Korea, 47(6), 585-612 (in Korean with English abstract).

Le Bas, M.J., Le Maitre, R.W., Streckeisen, A., and Zanettin, B. (1986) A chemical classification of volcanic rocks based on the total alkali-silica diagram. Journal of petrology, 27(3), 745-750. crossref(new window)

Longchambon, H. (1937) Sur certaines characteristiques de la sepiolite d'Ampandrandava (Madagascar) et la formule des sepiolites. Bulletin de la Societe Francaise de Mineralogie et de Crystallographie, 60, 232-276.

Midgley, H.G. (1959) A Sepiolite from Mullion, Cornwall. Clay Minerals, 4(22), 88-93. crossref(new window)

Migeon, G., (1936) Contribution a l'etude de la definition des sepiolites. Bulletin de la Societe Francaise de Mineralogie, 59, 6-133.

Otsuka, R., Hayashi, H., and Shimoda, S. (1968) Infrared absorption spectra of sepiolite and palygorskite. Memoirs of the School of Science and Engineering, Waseda University, 32, 13-24.

Preisinger, A. (1959) X-ray Study of the Structure of Sepiolite. Clays and Clay Minerals, 6, 61-67. crossref(new window)

Sakamoto, T., Suzuki, S., Tatematsu, H., and Otsuka, R. (1980) Iron-sepiolite from the Seikan Tunnel. Japan. Journal of Mineralogy, Petrology and Economic Geology, 75, 164-171.

Shimosaka, K. and Kawano, M. (1969) Sepiolite from Sangju, Kyongsangpuk-Do, Korea. Journal of the Clay Science Society of Japan, 9, 10-18.

Shimosaka, K., Kawano, M., and Sudo, T. (1976) New occurrence and mineralogical properties of ironsepiolite. Clay Science, 5(1), 31-41.

Shimosaka, K. and Wada, T. (1986) Sepiolite. Chishitsu News, Geol. Surv. Japan, 385, 6-18 (in Japanese).

Son, M., Song, C.W., Kim, M.C., Cheon, Y., Jung, S., Cho, H., and Sohn, Y.K. (2013) Miocene crustal deformation, basin development, and tectonic implication in the southeastern Korean Peninsula. Journal of the Geological Society of Korea, 49, 93-118 (in Korean with English abstract).

Tateiwa, I. (1924) 1 : 50,000 Geological atlas of Chosen, No. 2, Ennichi, Kuryuho and Choyo sheets. Geological Survey of Chosen (in Japanese).

Yoon, S. (1992) Geology of the Tertiary Yangnam and Pohang basins, Korea. Bulletin of the Mizunami Fossil Museum, 19, 13-31.