Skip to main content

Advertisement

Earth, Planets and Space
Earth, Planets and Space Cover Image
We’d like to understand how you use our websites in order to improve them. Register your interest.
Download PDF

Paleomagnetic results of the Late Permian Gobangsan Formation, Korean Peninsula: Remagnetization in the southeastern periphery of the Bagjisan Syncline

Earth, Planets and Space volume 52, pages175–182(2000)Cite this article

Abstract

Sedimentary rocks in the Late Permian Gobangsan Formation were collected at 7 sites for paleomagnetic study in the southeastern periphery of the Bagjisan Syncline, Korean Peninsula. The Gobangsan Formation revealed a stable secondary magnetization component with unblocking temperatures of 500–580°C and 650°C from two sites, while the other sites possessed only a present day viscous remanence. The secondary component resides in magnetite and hematite. The site-mean directions of the two sites before tilt correction (D = 355.9°, I = 50.2° with α95 = 4.3° and D = 355.7°, I = 53.3° with α95 = 6.1°) suggest that the remagnetization occurred after Early Cretaceous. The most plausible mechanism of the remagnetization is considered to be a chemical authigenesis because the other possible mechanisms of the remagnetization such as thermoviscous process and Recent weathering can be ruled out by rock magnetic experiments. The timing of the remagnetization is constrained during Tertiary time, because the observed directions are distinguishable from the Cretaceous directions and because Recent remagnetization is unlikely. This is ascertained by good agreement between the observed and the Tertiary directions.

References

  1. Cande, S. C. and D. V. Kent, Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoic, J. Geophys. Res., 100, 6093–6095, 1995.

  2. Cluzel, D., Late Paleozoic to early Mesozoic geodynamic evolution of the Circum-Pacific orogenic belt in South Korea and Southwest Japan, Earth Planet. Sci. Lett., 108, 289–305, 1991.

  3. Cluzel, D., J.-P. Cadet, and H. Lapierre, Geodynamics of the Ogcheon Belt (South Korea), Tectonophys., 183, 41–56, 1990.

  4. Cluzel, D., L. Jolivet, and J.-P. Cadet, Early Middle Paleozoic intraplate orogenyinthe Ogcheon belt (SouthKorea): anewinsightonthePaleozoic buildup of East Asia, Tectonics, 10, 1130–1151, 1991.

  5. Doh, S.-J. and J. D. A. Piper, Paleomagnetism of the (Upper Palaeozoic-Lower Mesozoic) Pyongan Supergroup, Korea: a Phanerozoic link with the North China Block, Geophys. J. Int., 117, 850–863, 1994.

  6. Doh, S.-J., D. Suk, and Y.-H. Park, Remagnetization of the Ryeongan Supergroup in the Yeongwol Area, Korea, J. Geomag. Geoelectr., 49, 1217–1232, 1997.

  7. Doh, S.-J., D.-W. Suk, and B.-Y. Kim, Paleomagnetic and rock magnetic studies of Cretaceous rocks in the Eumsung basin, Korea, Earth Planets Space, 51, 337–349, 1999.

  8. IAGA Division V, Working Group 8, International geomagnetic reference field, 1995 revision, J. Geomag. Geoelectr., 47, 1257–1261, 1995.

  9. Kawasaki, S., Addition to the flora of the Heian System, Bull. Geol. Sur. Chosen, 6, 18–19, 1939.

  10. Kim, K. H., J. D. Lee, and M. O. Choi, Carboniferous-Triassic paleomagnetism of South Korea, J. Geomag. Geoelectr., 44, 959–978, 1992.

  11. Kirschvink, J. L., The least-square line and plane and the analysis of palaeomagnetic data, Geophys. J. R. Astr. Soc., 62, 699–718, 1980.

  12. Lee, D.S., Geology of Korea, 514 pp., Kyohak-sa, Seoul, 1987.

  13. Lee, G., J. Besse, V. Courtillot, and R. Montigny, Eastern Asia in the Cretaceous: new paleomagnetic data from South Korea and a new look at Chinese and Japanese data, J. Geophys. Res., 92, 3580–3596, 1987.

  14. Lee, Y. S., S. Nishimura, and K. D. Min, High-unblocking-temperature haematite magnetizations of Late Palaeozoic red beds from the Okcheon zone, southern part of the Korean Paninsula, Geophys. J. Int., 125, 266–284, 1996.

  15. Lee, Y. S., N. Ishikawa, and W. K. Kim, Paleomagnetism of Tertiary rocks on the Korean Peninsula: tectonic implications for the opening of the East Sea (Sea of Japan), Tectonophys., 304, 131–149, 1999.

  16. Lowrie, W., Identification of ferromagnetic minerals in a rock by coercivity and unblocking temperature properties, Geophys. Res. Lett., 17, 159–162, 1990.

  17. Lowrie, W. and M. Fuller, On the alternating field demagnetization characteristics of multidomain thermoremanent magnetization in magnetite, J. Geophys. Res., 76, 6339–6349, 1971.

  18. Middleton, M.F. and P. W. Schmidt, Paleothermometry of the Sydney Basin, J. Geophys. Res., 87, 5351–5359, 1982.

  19. McFadden, P. L., A new fold test for palaeomagnetic studies, Geophys. J. Int., 103, 163–169, 1990.

  20. Otofuji, Y., K. Katsuragi, H. Inokuchi, K. Yaskawa, K. H. Kim, D. S. Lee, and H. Y. Lee, Remagnetization of Cambrian to Triassic sedimentary rocks of the Paegunsan Syncline of the Ogch’on Zone, South Korea, J. Geomag. Geoelectr., 41, 119–135, 1989.

  21. Pullaiah, G., E. Irving, K. L. Buchan, and D. J. Dunlop, Magnetization changes caused by burial and uplift, Earth Planet. Sci. Lett., 28, 133–143, 1975.

  22. Reedman, A. J. and S. H. Um, The Geology of Korea, 139 pp., Geol., Min., Inst., Korea, 1975.

  23. Tauxe, L., C. Constable, and L. Stokking, Use of anisotropy to determine the origin of characteristic remanence in the Siwalik red beds of northern Pakistan, J. Geophys. Res., 95, 4391–4404, 1990.

  24. Uno, K., Palaeomagnetic study of the Korean Peninsula: implications for the collision between the North and South China Blocks, Ph.D. Thesis, Kobe Univ., 71 pp., Japan, 1999.

  25. Zhao, X., R. S. Coe, K.-H. Chang, S.-O. Park, S. K. Omarzai, R. Zhu, Y. Zhou, S. Gilder, and Z. Zheng, Clockwise rotations recorded in Early Cretaceous rocks of South Korea: implications for tectonic affinity between the Korean Peninsula and North China, Geophys. J. Int., 139, 447–463, 1999.

  26. Zheng, Z., M. Kono, H. Tsunakawa, G. Kimura, Q. Wei, X. Zhu, and T. Hao, The apparent polar wander path for the North China Block since the Jurassic, Geophys. J. Int., 104, 29–40, 1991.

  27. Zijderveld, J. D. A., A.C. demagnetization of rocks: Analysis and results, in Methods in Paleomagnetism, edited by D. W. Collinson, K. M. Creer, and S. K. Runcorn, pp. 254–286, Elsevier, Amsterdam, 1967.

Download references

Author information

Affiliations

  1. Division of Global Development Science, Graduate School of Science and Technology, Kobe University, Kobe, Japan
    • Koji Uno
Authors
  1. Koji Uno
    View author publications
    You can also search for this author in

Corresponding author

Correspondence to Koji Uno.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Uno, K. Paleomagnetic results of the Late Permian Gobangsan Formation, Korean Peninsula: Remagnetization in the southeastern periphery of the Bagjisan Syncline. Earth Planet Sp 52, 175–182 (2000). https://doi.org/10.1186/BF03351626

Download citation

Keywords

  • Korean Peninsula
  • Natural Remanent Magnetization
  • Isothermal Remanent Magnetization
  • Saturation Isothermal Remanent Magnetization
  • Anhysteretic Remanent Magnetization