Geosciences Journal

The Association of Korean Geoscience Societies (한국지질과학협의회)
권호 표지

Early-stage volcanism and sedimentation of Jeju Island revealed by the Sagye borehole, SW Jeju Island, Korea

송영관;박기화

  • Published : 20040000
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Abstract

Jeju Island comprises extensive lava flows and hundreds of monogenetic volcanic cones with rare and thin sedimentary deposits. However, a number of boreholes reveal that the lavas are only 50 to 120 m thick along the coastal regions and are underlain by a 100 m-thick volcaniclastic sedimentary formation, which is correlative with the Seoguipo Formation. Detailed examination of the subsurface Seoguipo Formation, as recovered from the Sagye borehole in the southwestern part of the island, reveals that the formation consists of primary hydrovolcanic facies (massive or inclined stratified lapilli tuff) emplaced by Surtseyan fallouts and debris flows in subaerial or subaqueous settings and reworked hydrovolcanic facies (stratified, massive, or normally graded pebble conglomerate and sandstone) and nonvolcanic facies (homogeneous or laminated mudstone) that were deposited in subaerial to submarine (nearshore to offshore) settings. The predominance of volcaniclastic deposits in the formation demonstrates that the early stage of Jeju volcanism was characterized by repetitive hydrovolcanic activity probably because of an abundance of external water for hydroexplosion. The Seoguipo Formation is envisaged to consist of multiple, superposed hydromagmatic volcanoes with intervening, marine or nonmarine sedimentary sequences. This finding warrants redefinition of the Seoguipo Formation as a sedimentary succession, above the U Formation, composed of fossil-barren and fossiliferous, subaerial and subaqueous, volcaniclastic and nonvolcanic sedimentary deposits beneath the plateauforming lavas.

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References

  1. Marine Geology v.167 Late Pleistocene silty tidal rhythmites in the macrotidal flat between Youngjong and Yongyou Islands, west coast of Korea. Choi,K.S.;Park,Y.A.
  2. Sedimentology v.37 Depositional mechanics and sequences of base surges, Songaksan tuff ring, Cheju Island, Korea. Chough,S.K.;Sohn,Y.K.
  3. Journal of Sedimentary Petrology v.41 Depositional structures and processes in the non-barred high-energy nearshore Clifton,H.E.;Hunter,R.E.;Phillips,R.L.
  4. Bulletin of Geological Survey of Korea v.10 Geology of Cheju Island. Haraguchi,K.
  5. Volcanic Ash. Heiken,G.;Wohletz,K.
  6. Journal of Sedimentary Petrology v.63 Cyclic alternation of proximal and distal storm facies: Kope and Fairview Formations (Upper Ordovician), Ohio and Kentucky Jennette,D.C.;Pryor,W.A.
  7. Journal of Paleontological Society of Korea v.15 Benthic foraminiferal fauna from the Seoguipo Formation of Cheju Island, Korea. Kang,S.;Jung,K.K.;Yoon,S.
  8. Sedimentary Geology v.13 Graded limestones and limestone-quartzite couplets: possible storm deposits from Moroccan Carboniferous. Kelling,G.;Mullin,P.R.
  9. Journal of Asian Earth Sciences v.19 Sr isotopes of the Seoguipo Formation (Korea) and their application to geologic age Khim,B.K.;Woo,K.S.;Sohn,Y.K.
  10. Geosciences Journal v.4 Comparison of oxygen isotope profile of a fossil bivalve with the modern hydrographic condition: case study of the Seoguipo Formation (Korea). Khim,B.K.;Woo,K.S.;Yoon,S.H.
  11. The Memoir for Prof. Chi Moo Son's Sixtieth Birthday A stratigraphic and paleontologic study of the Seogwipo Formation. Kim,B.K.
  12. Ichnos v.5 Shell beds and trace fossils of the Seogwipo Formation (Early Pleistocene), Jeju Island, Korea. Kim,J.Y.;Heo,W.H.
  13. Palaeogeography, Palaeoclimatology, and Palaeoecology v.154 Paleoclimatic and chronostratigraphic interpretations from strontium, carbon and oxygen isotopic ratios in molluscan fossils of Quaternary Seoguipo and Shinyangri Formations, Cheju Island, Korea. Kim,K.H.;Tanaka,T.;Nakamura,T.;Nagao,K.;Youn,J.S.;Kim,K.R.;Yun,M.Y.
  14. unpublished Ph.D. thesis, Pusan National University Characteristics of the groundwater and hydrogeologic implications of the Seoguipo Formation in Cheju Island. Koh,G.W.
  15. Journal of the Geological Society v.140 The mechanism of surtseyan volcanism. Kokelaar,B.
  16. Bulletin of Volcanology v.48 Magma-water interactions in subaqueous and emergent basaltic volcanism. Kokelaar,P.
  17. Bulletin of Volcanology v.50 Miocene hydrovolcanism in NW Colorado, USA, fulled by explosive mixing of basaltic magma and wet unconsolidated sediment. Leat,P.T.;Thompson,R.N.
  18. Taejon, Korea Institute of Energy and Resources, KR-87-29 Quaternary geology of the Jeju Island. Lee,D.Y.;Yun,S.K.;Kim,J.Y.;Kim,Y.J.
  19. Science Reports of the Tohoku University v.15 Petrology and geochemistry of Jeju volcanic Island, Korea. Lee,M.W.
  20. Journal of Geological Society of Korea v.30 Stratigraphy and petrology of volcanic rocks in southern Cheju Island, Korea. Lee,M.W.;Won,C.K.;Lee,D.Y.;Park,G.H.
  21. Geosciences Journal v.3 The geologic age and paleoenvironment of the lower Seoguipo Formation, Cheju Island, Korea. Li,B.;Park,B.K.;Kim,D.S.;Woo,H.J.
  22. Journal of Sedimentary Petrology v.61 Combined-flow model for vertical stratification sequences in shallow marine storm-deposited beds. Mylow,P.M.;Southard,J.B.
  23. Journal of Geological Society of Korea v.36 Subsurface stratigraphy of Jeju Island. Oh,J.Y.;Yi,S.;Yoon,S.;Koh,G.W.;Yun,H.;Lee,J.D.
  24. unpublished Ph.D. thesis, Yonsei University Geochemical evolution of the Cheju Volcanic Island, Korea. Park,J.B.
  25. Korea Institute of Geology, Mining and Materials Geological report of the Moseulpo-Hanlim sheet (1:50,000). Park,K.H.;Cho,D.L.;Kim,J.C.
  26. Jeju Provincial Government Geologic report of the Seogwipo-Hahyori Sheet(1:50,000) Park,K.H.;Cho,D.L.;Kim,Y.B.;Kim,J.C.;Cho,B.W.;Jang,Y.N,;Lee,B.J.;Lee,S.R.;Son,B.K.;Cheon,H.Y.;Lee,H.Y.;Kim,Y.U.
  27. Jeju Provincial Government Geologic report of the Cheju-Aewol sheet (1:50,000) Park,K.H.;Song,K.Y.;Hwang,J.H.;Lee,B.J.;Cho,D.L.;Kim,J.C.;Cho,B.W.;Kim,Y.B.;Choi,P.Y.;Lee,S.R.;Choi,H.I.
  28. Journal of Volcanology and Geothermal Research v.27 Eruptive style and construction of shallow marine mafic tuff cones in the Narakay Volcanic Complex (Proterozoic, Hornby Bay Group, Northwest Territories, Canada). Ross,G.M.
  29. Journal of Sedimentary Research v.66 High-density trubidity currents: are they sandy debris flow? Shanmugam,G.
  30. Journal of Geological Society of Korea v.31 Structures and sequences of the Yongmeori tuff ring, Cheju Island, Korea: Sequential deposition from shifting vents Sohn,Y.K.
  31. Geological Society of America Bulletin v.108 Hydrovolcanic processes forming basaltic tuff rings and cones on Cheju Island, Korea Sohn,Y.K.
  32. Eos Trans. AGU, Western Pacific Geophysics Meeting, Abstract SE51B-05. v.83 no.22 A dynamic feedback between volcanism and stratigraphy: II. Hydrovolcanism and Quaternary depositional records on Jeju Island, Korea. Sohn,Y.K.
  33. Sedimentology v.36 Depositional Processes of the Suwolbong tuff ring, Cheju Island (Korea) Sohn,Y.K.;Chough,S.K.
  34. Sedimentology v.39 The Ilchulbong tuff cone, Cheju Island, South Korea: depositional processes and evolution of an emergent, Surtseyan-type tuff cone. Sohn,Y.K.;Chough,S.K.
  35. Sedimentology v.40 The Udo tuff cone, Cheju Island, South Korea: transformation of pyroclastic fall into debris fall and grain flow on a steep volcanic cone slope Sohn,Y.K.;Chough,S.K.
  36. Journal of Volcanology and Geothermal Research v.19 Stratigraphy, petrochemistry and Quaternary depositional record of the Songaksan tuff ring, Jeju Island, Korea. Sohn,Y.K.;Park,J.B.;Khim,B.K.;Park,K.H.;Koh,G.W.
  37. Bulletin of Geological Survey of Japan v.41 The K-Ar ages and their stratigraphic interpretation of the Cheju Island volcanics, Korea. Tamanyu,S.
  38. Tidal Signatures in Modern and Ancient Sediment. v.24 Comparison of ancient tidal rhythmites (Carnoniferous of Kanasas and Indiana, USA) with modern analogues (the Bay of Mont-Saint-Michel, France), Tessier,B.;Archer,A.W.;Lanier,W.P.;Feldman,H.R.
  39. Surtsey: The New Island in the North Atlantic Thorarinsson,S.
  40. Geological Association of Canada Facies Models: Response to Sea Level Change. Wave- and storm-dominated shallow marine systems Walker,R.G.;Plint,A.G.;James,N.P.(ed.)
  41. Bulletin of Volcanology v.58 Pre-emergent construction of a lacustrine basaltic volcano, Pahvant Butte, Utah(USA) White,J.D.L.
  42. Precambrian Research v.101 Subaqueous eruption-fed density currents and their deposits White,J.D.L.
  43. Science Report of Konkuk University v.1 Study of geologic development and the volcanic activity of the Jeju Island Won,J.K.
  44. Journal of Korean Institute of Mining Geology v.19 Paleomagnetism and radiometric age of trachytes in Jeju Island, Korea. Won,J.K.;Matsuda,J.;Nagao,K.;Kim,K.H.;Lee,M.W.
  45. Journal of the Korean Society of Oceanography v.30 Paleoceanographic investigation from the calcareous skeletons of the Pleistocene Seoguipo Formation, Cheju Island, Korea. Woo,K.S.;Cheong,D.K.;Park,B.K.
  46. Paleontological Research v.2 Calcareous nannoplankton from the Seoguipo Formation of Cheju Island, Korea and its paleoceanographic implications Yi,S.;Yum,H.;Yoon,S.
  47. Journal of College of Sciences v.44 On some fossil shells from the island of Saishu in the Strait of Tsushima. Yokoyama,M.
  48. The Seoguipo molluscan fauna of Jeju Island, Korea. Yoon,S.
  49. Tectonophysics v.281 Miocene-Pleistocene volcanism and tectonics in southern Korea and their relationship to the opening of the Japan Sea. Yoon,S.
  50. Field Excursion Guidebook, Third International Conference on Asian Marine Geology Marine and Volcaniclastic Sequences in Cheju Island, Korea. Yoon,S.H.;Sohn,Y.K.;Han,S.J.