JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Stratigraphic Implication of the Daljeon Basalt in the Miocene Pohang Basin, SE Korea
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Stratigraphic Implication of the Daljeon Basalt in the Miocene Pohang Basin, SE Korea
Song, Cheol Woo; Kim, Hyeonjeong; Kim, Jong-Sun; Kim, Min-Cheol; Son, Moon;
  PDF(new window)
 Abstract
Although the Daljeon Basalt in the Pohang Basin is important for interpreting the basin evolution, its relative chronology, stratigraphic position, and isotopic age still remain controversial. In order to clear up the controversies, this study carried out detailed field investigation to determine its distribution and occurrence together with reanalysis of its previous geochemical data and age dating. Based upon the field investigation, the basalt occurring in the central part of the Pohang basin is composed of three main bodies and a dozen of minor dikes and sills that intruded into the Yeonil Group. Their mineral assemblages consist of phenocrysts such as olivine and clinopyroxene and fine groundmasses of clinopyroxene, plagioclase, olivine, and opaque oxide, impling the porphyritic texture of alkaline basalt. All their geochemical data also show the similar geochemical characteristics in TAS, Zr-Ti, and REE/trace elements distribution diagrams. The samples are plotted on alkalic field in the total alkali-versus-silica diagram and show similar patterns to enrichment oceanic basalt or within plate basalt in trace elements. In addition, isochron age of 13.82Ma is obtained. These results indicate that the Daljeon Basalt is an alkaline intrusive rock belonging to the middle Miocene Yeonil Group.
 Keywords
Daljeon Basalt;Pohang Basin; age dating;alkaline basalt;intrusive rock;
 Language
Korean
 Cited by
 References
1.
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, 253-273. crossref(new window)

2.
Choi, H.-O., Choi, S.H., Lee, D.-C., and Kang, H.-C., 2013, Geochemical evolution of basaltic volcanism within the tertiary basins of southeastern Korea and the opening of the East Sea (Sea of Japan). Journal of Volcanology and Geothermal Research, 249, 109-122. crossref(new window)

3.
Choi, P.-Y., 2006, 'Singwang strike-slip duplex' around the Pohang Basin, SE Korea: its structural evolution and role in opening and fill of the Miocene basin. Geosciences Journal, 20, 145-157.

4.
Cox, K.G., Bell, J.D., and Pankhurst, R.J., 1979, The interpretation of igneous rocks. George Allen and Unwin, 450p.

5.
Han, J.H., Kwak, Y.H., Son, J.D., and Son, B.K., 1987, Tectonic evolution and depositional environments of the Tertiary sedimentary basin, southeastern part of Korea. Report R-86-2-(B)-4, Korea Institute of Energy and Resources, Seoul, 109p.

6.
Hong, S.W., Chough, S.K., and Hwang, I.G., 1998, Provenance of coarse-grained detritus in fan-delta systems, Miocene Pohang Basin, SE Korea: implications for boundary fault movements. Geosciences Journal, 2, 46-58. crossref(new window)

7.
Hwang, J.H., Kim, D.H., Cho, D.R., and Song, K.Y., 1996, Explanatory note of the Andong Sheet. Korea Institute of Geology, Mining & Materials, Teajon.

8.
Jin, M.-S., Kim, S.-J., and Shin, S.-C., 1988, K/Ar and fission- track datings for volcanic rocks in the Pohang-Kampo area. Research on Isotope Geology, Korea Institute of Energy and Resources, KR-87-27. 65-105.

9.
Kim, B.K., 1965, The stratigraphic and paleontologic studies of the Tertiary (Miocene) of the Pohang area, Korea. Seoul University, Journal of Science and Technology Series, 15, 32-121.

10.
Kim, I.-S. and Kang, H.-C., 1989, Palaeomagnetism of tertiary rocks in the Eoil Basin and its vicinities, southeast Korea. Journal of the Geological Society of Korea, 25, 273-293 (in Korean with English abstract).

11.
Kim, I.-S., 1992, Origin and tectonic evolution of the East Sea (Sea of Japan) and the Yangsan fault system: A new synthetic interpretation. Journal of the Geological Society of Korea, 28, 84-109 (in Korean with English abstract).

12.
Kim, J.-M., 1999, Early Neogene biochemostratigraphy of Pohang Basin: a paleoceanographic response to the early opening of the Sea of Japan (East Sea). Marine Micropaleontology, 36, 269-290. crossref(new window)

13.
Kim, J.-S., Son, M., Kim, J.-S., and Kim, J., 2005, 40Ar/39Ar Ages of the Tertiary Dike Swarm and Volcanic Rocks, SE Korea. Journal of the Petrological Society of Korea, 14, 93-107 (in Korean with English abstract).

14.
Kim, W.H., 1990, Significance of early to middle Miocene planktonic foraminiferal biostratigraphy of the E-core in the Pohang Basin, Korea. Journal of the Paleontological Society of Korea, 6, 144-164.

15.
Lee, D.Y., 1985, Quaternary Deposits in the Coastal Fringe of the Korean Peninsula. Ph.D. issertation, Vrije University of Brussels, 315p.

16.
Lee, H.K., Moon, H.-S., Min, K.D., Kim, I.-S., Yun, H., and Itaya, T., 1992, Paleomagnetism, stratigraphy and geologic structure of the Tertiary Pohang and Changgi basins; K-Ar ages for the volcanic rocks. Journal of the Korean Institute of Mining Geology, 25, 337-349 (in Korean with English abstract).

17.
Lee, Y.G., You, H.S., and Koh, Y.K., 1991, Biostratigraphy and paleoenvironments of Yeonil Group in Pohang area. Journal of the Paleontological Society of Korea, 7, 32-62 (in Korean with English abstract).

18.
Ludwig, K.R., 2001, Users manual for Isoplot/EX. Berkeley Geochronology Center Special Publication No. 1a, 56p.

19.
Middlemost, E.A.K., 1994, Naming materials in the magma/igneous rock system. Earth-Science Reviews, 37, 215-224. crossref(new window)

20.
Nakamura, N., 1974, Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites. Geochimica et Cosmochimica Acta, 38, 757-775. crossref(new window)

21.
Patton, F.D., 1981, Summary of radiometric age dating of rock samples, Wolsung 2 Nuclear Power Plant. F.D. Patton Consultants Ltd., West Vancouver, B.C., Memoir, CANATOM-KIGAM, 19p.

22.
Pearce, J.A., 1982, Trace element characteristics of lavas from destructive plate boundaries. In: Thorpe R.S. (ed.) Andesites: Orogenic Andesites and Related Rocks. John Wiley & Sons, Chichester, 525-548.

23.
Sawada, Y., 1988, K-Ar age results of volcanic rocks in Southeast Korea (unpublished report).

24.
Shim, S.-H., Park, B.-J., Kim, T.-H., Jang, Y.-D., Kim, J.- H., and Kim, J.-J., 2011, Petrology of the Tertiary basaltic rocks in the Yeonil and Eoil basins, southeastern Korea. Journal of the Petrological Society of Korea, 20, 1-21 (in Korean with English abstract). crossref(new window)

25.
Shimazu, M., Kawano, Y., and Kagami, H., 1990, Major and minor element compositions and Sr, Nd isotope ratios of basaltic rocks from the Pohang-Yangnam area. Korea. Journal of Mineralogy, Petrology and Economic Geology, 85, 405-415. crossref(new window)

26.
Shin, S.-C., 2013, Revised Fission-track Ages and Chronostratigraphies of the Miocene Basin-fill Volcanics and Basements, SE Korea. Journal of the Petrological Society of Korea, 22, 83-115 (in Korean with English abstract). crossref(new window)

27.
Sohn, Y.K. and Son, M., 2004, Synrift stratigraphic geometry in a transfer zone coarse-grained delta complex, Miocene Pohang Basin, SE Korea. Sedimentology, 51, 1387-1408. crossref(new window)

28.
Son, M. and Kim, I.-S., 1996, Paleomagnetism of Tertiary basins in southern Korea: 2. Basaltic rocks in the central part of Pohang Basin. Journal of Economic and Environmental Geology, 29, 369-380 (in Korean with English abstract).

29.
Son, M., Song, C.W., Kim, M.-C., Cheon, Y., Jung, S., Cho, H., Kim, H.-G., Kim, J.S., 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).

30.
Song, C.W., Son, M., and Sohn, Y.K., 2012, Geometry and kinematics of the western marginal faults of the Miocene Pohang basin, SE Korea, and their tectonic implications. AOGS-AGU (WPGM) Joint Assembly, Singapore, August 13-17, 241.

31.
Song, S., Lee, H.K., and Yun, H., 1998, Petrogenesis of the Tertiary volcanic rocks from the southeastern part of Korea. Journal of Mineralogy, Petrology and Economic Geology, 93, 441-461. crossref(new window)

32.
Sun, S.S. and McDonough, W.F., 1989, Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and process. In: Saunders, A.D. and Norry, M.J. (eds.), Magmatism in ocean basins. Geological Society of London, Special Publication., 42, 313-345.

33.
Tateiwa, I., 1924, Geological atlas of Chosen, no. 2: Ennichi- Kyuryuho and Choyo Sheet (1:50,000). Geological Survey of Chosen, 16p (in Japanese).

34.
Uto, K., Ishizuka, O., Matsumoto, A., Kamioka, H., and Togashi, S., 1997, Laser-heating 40Ar/39Ar dating system of the Geological Survey of Japan: System outline and preliminary results. Bulletin of Geological Survey of Japan, 48, 23-46.

35.
Yi, S. and Yun, H., 1995, Miocene calcareous nannoplankton from the Pohang Basin, Korea. Palaeontographica B, 237, 113-158.

36.
Yoon, S., 1975, Geology and paleontology of the Tertiary Pohang district, Korea: Part 1, Geology. Journal of the Geological Society of Korea, 11, 187-214.

37.
Yoon, S.H. and Chough, S.K., 1993, Evolution of Neogene Sedimentary Basins in the Eastern Continental Margin of Korea. The Korean Journal of Petroleum Geology, 1, 15-27.

38.
Yoon, S.H. and Chough, S.K., 1995, Regional strike slip in the eastern continental margin of Korea and its tectonic implications for the evolution of Ulleung Basin, East Sea (Sea of Japan). Geological Society of America Bulletin, 107, 83-97. crossref(new window)

39.
You, H.S., Koh, Y.K., and Kim, J.Y., 1986, A study on the nannoplankton from the Neogene formation, Pohang, Korea. Journal of the Paleontological Society of Korea, 2, 137-154.

40.
Yun, H., 1994, Emended Stratigraphy of the Miocene formations in the Pohang Basin, Part II: South of the Hyongsan Fault. Journal of the Paleontological Society of Korea, 10, 99-116.

41.
Yun, H., Lee, H.K., and Song, S., 1995, Basic volcanic rocks in the Pohang Basin, and its stratigraphic and petrogenetic implications. Journal of the Paleontological Society of Korea, 11, 125-145.

42.
Yun, H., Min, K.D., Moon H-S., Lee, H.K., and Yi, S.S., 1991, Biostratigraphic, chemostratigrapic, paleomagnetostratigraphic, and tephrochronological study for the correlation of Tertiary formations in southern part of Korea: Regional tectonics and its stratigraphical implication in the Pohang Basin, Korea. Journal of Paleontological Society of Korea, 7, 1-12.