Abstract
The Cambrian-Ordovician succession crops out well in the Seokgaejae area of the southeastern margin of the Taebaeksan Basin. The Upper Cambrian Hwajeol Formation of the Seokgaejae section was studied to refine the conodont zones previously proposed and to correlate them with other areas. Based on euconodont species, four zones are recognized: a new and unnamed informal lowermost and the Proconodontus, Eoconodontus notchpeakensis and Cambrooistodus minutus zones in ascending order. This zonal framework is basically equivalent to that of southern (Lee and Lee, 1988; Lee, 2001, 2002) and northern (Lee, 1989, 1990, 2004) limbs of Paekunsan syncline. The four zones of Seokgaejae section are correlated with those of other parts of the world, including North China, North America and Australia. The study was unable to refine conodont zonation of the basal and uppermost parts of the formation. This may be related to either sealevel change or structural control on sediment deposition in the section.
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An, T. X., Zhang, F., Xiang, W., Zhang, Y., Xu, X., Zhang, H., Jiang, D., Yang, C., Lin, L., Cui, Z., and Yang, X., 1983, The conodonts of North China and adjacent regions. Science Publishing Company, Beijing, 223 p. (in Chinese with English abstract).
Chen, J. Y. and Gong, W. L., 1986, Conodonts. In: Chen, J. Y. (Ed.), Aspects of Cambrian-Ordovician boundary in Dayangcha, China. Prospect Publishing House, Beijing, pp. 93–223.
Chen, J. Y., Qian, Y. Y., Lin, Y. K., Zhang, J. M., Wang, Z. H., Yin, L. M., and Erdtmann, B. D., 1986, Study on Cambrian-Ordovician boundary strata and its biota in Dayangcha, Hunjiang, Jilin, China. Contribution to the Calgary Cambrian-Ordovician Boundary Meeting, Prospect Publishing House, Beijing 138 p.
Chen, J. Y., Qian, Y. Y., Zhang, J. M., Lin, Y. K., Yin, L. M., Wang, Z. H., Wang, Z. Z., Yang, J. D., and Wang, Y. X., 1988, The recommended Cambrian-Ordovician boundary stratotype of the Xiaoyangqiao section (Dayangcha, Jilin Province), China. Geological Magazine, 125, 415–444.
Cheong, C. H., 1969, Stratigraphy and paleontology of the Samcheog Coalfield, Gangweondo, Korea (1). Journal of the Geological Society of Korea, 5, 13–56.
Choi, D. K., Chough, S. K., Kwon, Y. K., Lee, S.-B., Woo, J., Kang, I., Lee, H. S., Lee, S. M., Sohn, J. W., Shinn, Y. J., and Lee, D.-J., 2004, Taebaek Group (Cambrian-Ordovician) in the Seokgaejae section, Taebaeksan Basin: a refined lower Paleozoic stratigraphy in Korea. Geosciences Journal, 8, 125–151.
Cooper, R. A., Nowlan, G. S., and Williams, S. H., 2001, Global stratotype section and point for base of the Ordovician System. Episodes, 24, 19–28.
Geological Investigation Corps of the Taebaeksan Region (GICTR), 1962, Report on the Geology and Mineral Resources of the Taebaeksan Region. Geological Society of Korea, 89 p.
Kobayashi, T., 1935, The Cambro-Ordovician formations and faunas of South Chosen, Paleontology, Part III, Cambrian faunas of South Chosen with a special study on the Cambrian trilobite genera and families. Journal of the Faculty of Science (Imperial University of Tokyo), Section II, 16, 1–84.
Kwon, Y. K. and Chough, S. K., 2005, Sequence stratigraphy of the cyclic successions in the Dumugol Formation (Lower Ordovician), mideast Korea. Geosciences Journal, 9, 305–324.
Lee, B. S., 1983, Stratigraphy and micropaleontology of the Hwajeol Formation and Dumugol Shale in Mureungri area, Jeongseongun, Kangweondo. Unpublished M.S. Thesis, Yonsei University, 65 p. (in Korean with English abstract).
Lee, B. S., 1989, Conodonts from the Hwajeol Formation (Upper Cambrian-lowest Ordovician) in northern district of Taebaeg City, Kangweon-do, Korea. Journal of the Geological Society of Korea, 25, 322–336.
Lee, B. S., 1990, Conodont fauna of the Hwajeol Formation (Upper Cambrian-lowest Ordovician) in the Sabuk area, Kangweon-do and its implication on stratigraphy. Journal of the Geological Society of Korea, 26, 293–303.
Lee, B. S., 1992, Additional conodonts from the Cambrian-Ordovician boundary beds in the Baegunsan syncline. Journal of the Geological Society of Korea, 28, 590–603.
Lee, B. S., 2001, Conodonts from the Cambrian succession of South Korea. Journal of the Geological Society of India, 58, 319–328.
Lee, B. S., 2002, Revision of conodont zones of the Hwajeol Formation (Upper Cambrian-Lower Ordovician), Kangweon-do, South Korea. Geology of the Pacific Ocean, Russian Academy of Sciences, 21, 18–30.
Lee, B. S., 2004, Late Cambrian conodonts from Cheungsan, Kangweon Province, Korea. Alcheringa, 28, 53–64.
Lee, B. S. and Lee, H. Y., 1988, Upper Cambrian conodonts from the Hwajeol Formation in the southern limb of the Baegunsan syncline, eastern Yeongweol and Samcheog areas, Kangweon-do, Korea. Journal of the Geological Society of Korea, 24, 195–208.
Lee, B. S. and Lee, J. D., 1993, A reassessment on conodont biostratigraphy of the Cambrian-Ordovician boundary sections in the Paekunsan syncline. Journal of the Paleontological Society of Korea, 9, 155–165.
Lee, B. S., 2008, Taxonomic revisions of Upper Cambrian Granatodontus Chen et Gong, 1986 of the Dasytodus lineage (Conodonta). Geosciences Journal, 12, 227–231.
Lee, H. Y., 1975, Conodonts from the Upper Cambrian formations, Kangweon-do, South Korea. Yonsei Nonchong, Yonsei University Graduate School Bulletin, 12, 97–110.
Lee, H. Y. and Lee, J. D., 1971, Conodont fauna from the Great Limestone Series in Dongjeom District, Samcheog-gun, Kangweon-do and its stratigraphical significance. Journal of the Geological Society of Korea, 7, 89–101.
Miller, J. F., 1988, Conodonts as biostratigraphic tools for redefinition and correlation of the Cambrian-Ordovician boundary. Geological Magazine, 125, 349–362.
Miller, J. F., Evans, K. R., Loch, J. D., Ethington, R. L., Stitt, J. H., Holmer, L. E., and Popov, L. E., 2003, Stratigraphy of the Sauk III interval (Cambrian-Ordovician) in the Ibex area, western Millard County, Utah and central Texas. Brigham Young University Geology Studies, 47, 23–118.
Müller, K. J., 1973, Late Cambrian and Early Ordovician conodonts from northern Iran. Geological Survey of Iran Report, 30, 70 p.
Nicoll, R. S. and Shergold, J. H., 1991, Revised Late Cambrian (pre-Payntonian-Datsonian) conodont biostratigraphy at Black Mountain, Georgina Basin, western Queensland. BMR Journal of Australian Geology and Geophysics, 12, 93–118.
Sohn, J. W. and Choi, D. K., 2007, Furongian trilobites from the Asioptychaspis and Quadraticephalus zones of the Hwajeol Formation, Taebaeksan Basin, Korea. Geosciences Journal, 11, 297–314.
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Lee, BS., Seo, KS. Conodonts from the Hwajeol Formation (Upper Cambrian) in the Seokgaejae area, southeast margin of the Taebaeksan Basin. Geosci J 12, 233–242 (2008). https://doi.org/10.1007/s12303-008-0024-7
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DOI: https://doi.org/10.1007/s12303-008-0024-7