IEG 환경지질연구정보센터
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(2) . 2002. 4. ,. 1,980 line-km -. .. EEZ. 1. 15. (Fig. 1),. -. . , 7. (Sora-1,. Domi-1, Dragon-1, KV-1, Okdom-1, Geobuk-1, PZ-1). (. , 1994;. , 1998). (Oligocene Unit), (Early Miocene Unit), (Middle Miocene Unit), (Late Miocene Unit),. Fig. 2. Structural elements developed in. -. (Plio-Pleistocene Unit). the East China Sea (Zhou et al., 1989). The Jeju Basin forms as the part of the. .. ,. northeastern East China Sea Shelf Basin,. , .. which extends along a NE-SW trend.. ,. Polygon represents the study area.. , ,. ,. .. 2.. (Fig. 3).. , .. .. (fluvial) (. (lacustrine). , 1994), shoreface. (. , 1998). ,. . (. , 1998).. .. 318.
(3) .. .. PZ-1. 1 (reflection anomaly) ,. (volcanic flow) (Fig. 4). (. , 1994),. . , .. Fig. 3. Time structure map of top acoustic. .. basement modified from KNOC (1998).. ,. More than 4 km of Tertiary strata are. (. preserved in the southern part of the Jeju. , 1998).. Basin. The strata thin to less than 1.5 km in. -. the northern part of the basin, which are. ,. deformed by normal faults and volcanic. .. activities. Contour intervals are 500 ms in two-way travel time.. (. , 1994).. (basement high). (basement low). .. , ,. 3. . , (half. -. .. graben). (graben). ,. (extensional. tectonism). .. (block fault). (listric fault) .. 319. , (rifted basin).
(4) Fig. 4. Seismic section shows a strong amplitude anomaly caused by a volcaniclastic layer near the PZ-1 well. An evidence of effects of Miocene igneous intrusions known as diorite sills appears several wells in the study area. . .. 3. 1,980 line-km 54. .. 3. , . , .. 3. , . -. .. -. . , , .. “2002. (CRPM153-00-1483-5)”. .. ․. 320. ,.
(5) .. , 1994.. (I),. , 1998.. , KR-94(C)4-1, 431p. (. ),. , 380p.. Zhou, Z., Zhao, J. and Yin, P., 1989. Characteristics and tectonic evolution of the East China Sea, In X. Zhu ed., Chinese Sedimentary Basins: Sedimentary Basins of the World 1, Elservier, 165-179.. 321.
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