Browse > Article
http://dx.doi.org/10.7854/JPSK.2013.22.1.049

Eruption Styles and Processes of the Dongmakgol Tuff, Cheolwon Basin, Korea  

Hwang, Sang Koo (Department of Earth and Environmental Sciences, Andong National University)
Son, Yeong Woo (Department of Earth and Environmental Sciences, Andong National University)
Choi, Jang O (Department of Earth and Environmental Sciences, Andong National University)
Kim, Jae Ho (Department of Earth and Environmental Sciences, Andong National University)
Publication Information
The Journal of the Petrological Society of Korea / v.22, no.1, 2013 , pp. 49-62 More about this Journal
Abstract
The Dongmakgol Tuff is divided into 8 lithofacies based on their grain size and depositional structures: massive tuff breccia(TBm), welded tuff and lapilli tuff(LTw), rheomorphic tuff and lapilli tuff(LTr), massive lapilli tuff(LTm), stratified lapilli tuff(LTs), gradedly bedded lapilli tuff(LTg), crudely bedded lapilli tuff(LTb) and massive fine tuff(Tm). They can be divided into 3 pyroclastic rock group based on their constituents of the lithofacies. The lower group(LI) is composed of LTm, LTw and LTr, which are interpreted to have resulted from emplacement of voluminous pyroclastic flows due to ignimbrite-form eruption to boiling-over eruption. The middle group(LT+MI) consists of LTs, LTg and LTm associated with Tm in the lower part, and of LTm, LTw and LTr in the middle and upper parts; these suggest that started with deposition of pyroclastic surges from phreatoplinian eruption by poor eternal water, passed through emplacement of pyroclastic flows from ignimbrite-form eruption and ended with deposition of voluminous pyroclastic flows from boiling-over eruption. The upper group(lUT+uUT+UI) is composed of LTs, LTg and Tm in the lowermost, TBm, LTb, LTb and Tm in the lower part, and LTm and LTw in the middle and upper part, suggesting that began with deposition of surges from phreatoplinian eruption, passed through deposition of pumice- and ash-fallouts from plinian eruption and transformed into emplacement of pyroclastic flows due to boiling-over eruption. As result, eruptive processes in the Dongmakgol Tuff approximately began with phreatoplinian or/and plinian eruption, transformed into ignimbrite-forming eruption and proceeded into boiling-over eruption in each volcanism, but proceeded presumably without phreatoplinian or plinian eruption in the earlier stage of 1st volcanism.
Keywords
Dongmakgol Tuff; Lithofacies; Phreatoplinian eruption; Plinian eruption; Boiling-over eruption;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Francis, P.W., O'Callaghan, L, Kretzchmar, G.A., Thorpe, R.S., Sparks, R.S.J., Page, R.N., de Barrio, R.E., Gillou, G. and Gonzalez, O.E., 1983, The Cerro Galan ignimbrite. Nature, 301, 51-53.   DOI
2 Hwang, S.K., 2013, Welding and crystallization facies, and cooling processes of the Dongmakgol Tuff in the Cheolwon Basin, Korea. Journal of the Geological Society of Korea, 49, 101-119.
3 Hwang, S.K., An, Y.M. and Yi, K., 2011, SHRIMP age datings and volcanism times of the igneous rocks in the Cheolwon Basin, Korea. Journal of the Petrological Society of Korea, 20, 231-241.   과학기술학회마을   DOI   ScienceOn
4 Hwang, S.K. and Kim, J.H., 2010, Flow directions and source of the Dongmakgol Tuff in the Cheolwon Basin, Korea. Journal of the Petrological Society of Korea, 19, 51-65.   과학기술학회마을
5 Hwang, S.K., Kim, S.H., Hwang, J.H. and Kee, W.S., 2010, Petrotectonic setting and petrogenesis of Cretaceous igneous rocks in the Cheolwon Basin, Korea. Journal of the Petrological Society of Korea, 19, 71-91.   과학기술학회마을
6 Hwang, S.K. and Ryu, H.Y., 2011, Volcanic processes of the Cretaceous ignimbrites, Cheolwon Basin: Magmatic processes of the Dongmakgol Tuff. Journal of the Geological Society of Korea, 47, 647-664.
7 Kee, W.-S., Lim, S.-B., Kim, H., Hwang, S.K., Song, K.-Y. and Kihm, Y.-B., 2008, Geological report of the Yeoncheon Sheet. Korea Institute of Geoscience and Mineral Resources, 83p.
8 Rosi, M., Vezzoli, L., Aleotti, P. and De Censi, M., 1996, Interaction between caldera collapse and eruptive dynamics during Campanian Ignimbrite eruption, Phlegrean Fields, Italy. Bulletin of Volcanology, 57, 541-554.   DOI   ScienceOn
9 Self, S. and Rampino, M.R., 1981, The 1883 eruption of Krakatau. Nature, 294, 699-704.   DOI
10 Sparks, R.S.J., 1976, Grain size variations in ignimbrites and implications for the transport of pyroclastic flows. Sedimentology, 23, 147-188.   DOI
11 Sparks, R.S.J., Self, S. and Walker, G.P.L., 1973, Products of ignimbrite eruptions. Geology, 1, 115-118.   DOI
12 Valentine, G.A., 1987, Stratified flow in pyroclastic surges. Bulletin of Volcanology, 49, 616-630.   DOI   ScienceOn
13 Wilson, C.J.N., 1980, The role of fluidisation in the emplacement of pyroclastic flows: An experimental approach. Journal of Volcanology and Geothermal Research, 8, 231-249.   DOI   ScienceOn
14 Aramaki, S., 1984, Formation of the Aira caldera, southern Kyushu, -22,000 years ago. Journal of Geophysical Research, 89, 8485-8501.   DOI
15 Cas, R.A.F. and Wright, J.V., 1987, Volcanic successions. Allen & Unwin, London, 528.
16 Branney, M.J. and Kokelaar, P., 2002, Pyroclastic density currents and the sedimentation of ignimbrites. London, The Geological Society Memoir 27, 143p.
17 Bursik, M.I. and Woods, A.W., 1996, The dynamics and thermodynamics of large ash flows. Bulletin of Volcanology, 58, 175-193.   DOI
18 Cas, R.A.F., Landis, C.A. and Fordyce, R.E., 1989, A monogenetic, Surtla-type, Surtseyan volcano from the Eocene-Oligocene Waiareka-Deborah volcanics, Otago, New Zealand: a model. Bulletin of Volcanology, 51, 281-298.   DOI   ScienceOn
19 Chough, S.K. and Sohn, Y.K., 1990, Depositional mechanics and sequences of base surges, Songaksan tuff ring, Cheju Island, Korea. Sedimentology, 37, 1115-1135.   DOI
20 Druitt, T.H., 1985, Vent evolution and lag breccia formation during the Cape Riva eruption of Santorini, Greece. Journal of Geology, 93, 439-454.   DOI
21 Druitt, T.H., 1992, Emplacement of the 18 May 1980 lateral blast deposit ENE of Mount St. Helens, Washington. Bulletin of Volcanology, 54, 554-572.   DOI
22 Druitt, T.H. and Bacon, C.R., 1986, Lithic breccia and ignimbrite erupted during the collapse of Crater Lake caldera, Oregon. Journal of Volcanology and Geothermal Research, 29, 1-32.   DOI   ScienceOn
23 Druitt, T.H. and Sparks, R.S.J, 1985, On the formation of calderas during ignimbrite eruptions. Nature, 310, 679-681.
24 Fisher, R.V., 1990, Transport and deposition of a pyroclastic surge across an area of high relief: the 18 May 1980 eruption of Mount St. Helens, Washington. Geological Society of America Bulletin, 102, 1038-1054.   DOI
25 Fisher, R.V. and Schmincke, H.-W., 1984, Pyroclastic rocks. Springer, Heidelberg, 472p.
26 Wright, J.A. and Walker, G.P.L., 1977, The ignimbrite source problem: significance of a co-ignimbrite lag-fall deposits. Geology, 5, 729-732.   DOI