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Early Ordovician conodonts from the Dumugol Formation in the Baegunsan Syncline, eastern Yeongweol and Samcheog areas, Kangweon-Do, Korea

  • Kwang-Soo Seo (a1), Ha-Young Lee (a2) and Raymond L. Ethington (a3)

Samples from the Dumugol Formation were collected from eight measured sections and two cores in the so-called Baegunsan Syncline, located between eastern Yeongweol and Samcheog areas, Kangweon-Do, South Korea. A total of 7,813 identifiable conodonts were recovered from 146 samples. They are classified into 24 multielement species referable to 16 genera, and 37 form species belonging to 17 genera; six species are newly described: Distacodus dumugolensis, Parapanderodus acontiformis, Scolopodus longibasis, Scolopodus n. sp. A, Triangulodus dumugolensis, and Oistodus(?) sp. The Dumugol Formation is divided biostratigraphically into four conodont zones, viz, Chosonodina herfurthi-Rossodus manitouensis, Glyptoconus quadraplicatus, Paracordylodus gracilis, and Triangulodus dumugolensis zones in ascending order. These zones are correlated with those of the early Ordovician conodont faunas of North America, northern Europe, China, Australia, and Iran. The Dumugol Formation ranges from late Tremadocian to early Arenigian in age. The boundary between these two series lies between 70 and 100 m above the base of the Dumugol Formation in each of the sections.

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An, T. X., Zhang, F., Xiang, W., Zhang, Y., Zhang, W., Xu, W., Zhang, H., Jiang, D., Yang, C., Lin, L., Cui, Z., and Yang, X. 1983. The Conodonts of North China and the Adjacent Regions. Science Publishing Company, Beijing, 223 p. [in Chinese].
An, T. X., et al. 1987. Lower Paleozoic Conodonts from Southern China. Science Publishing Company, Beijing, 238 p. [in Chinese].
Barnes, C. R., and Poplawski, M. L. S. 1973. Lower and Middle Ordovician conodonts from the Mystic Formation, Quebec, Canada. Journal of Paleontology, 47:760790.
Bergström, S. M. 1977. Early Paleozoic biostratigraphy in the Atlantic Borderland, p. 85110. In Swain, F. M. (ed.), Stratigraphic Micropaleontology of Atlantic Basin and Borderlands. Elsevier Science Publishing Company, Amsterdam.
Bergström, S. M., Epstein, A. G., and Epstein, J. B. 1972. Early Ordovician North Atlantic Province conodonts in eastern Pennsylvania. U.S. Geological Survey Professional Paper, 800:D37D44.
Branson, E. B., and Mehl, M. G. 1933. Conodonts from the Jefferson City (Lower Ordovician) of Missouri. University of Missouri Studies, 8:5364.
Choi, D. K., and Lee, Y. I. 1988. Invertebrate fossils from the Dumugol Formation (Lower Ordovician) of the Dongjeom area, Korea. The Journal of the Geological Society of Korea, 24:289305.
Druce, E. C., and Jones, P. J. 1971. Cambro-Ordovician conodont from the Burke River Structural Belt, Queensland. Australia Bureau of Mineral Resources Bulletin, 110:1167.
Epstein, A. G., Epstein, J. B., and Harris, L. D. 1977. Conodont color alteration: an index to organic metamorphism. U.S. Geological Survey Professional Paper 995, 27 p.
Ethington, R. L. 1972. Lower Ordovician (Arenigian) conodonts from the Pogonip Group, central Nevada. Geologica et Palaeontologica, Sonderdruck, 1:1728.
Ethington, R. L., and Clark, D. L. 1964. Conodonts from the El Paso Formation (Ordovician) of Texas and Arizona. Journal of Paleontology, 38:658704.
Ethington, R. L., and Clark, D. L. 1971. Lower Ordovician conodonts in North America, p. 6382. In Sweet, W. C. and Bergström, S. M. (eds.), Symposium on Conodont Biostratigraphy. Geological Society of America, Memoir 127.
Ethington, R. L., and Clark, D. L. 1982. [date of imprint 1981]. Lower and Middle Ordovician conodonts from the Ibex area, western Millard County, Utah. Brigham Young University Geology Studies 28, 127 p.
Ethington, R. L., and Repetski, J. E. 1984. Paleobiogeographic distribution of the early Ordovician conodonts in central and western United States. Geological Society of America, Special Paper, 196:89101.
Fåhraeus, L. E. 1966. Lower Viruan (Middle Ordovician) conodonts from the Gullhogen Quarry, south-central Sweden. Sveriges Geologiska Undersokning, Series C, Number 610, 40 p.
Fåhraeus, L. E., and Nowlan, G. S. 1978. Franconian (Late Cambrian) to early Champlainian (Middle Ordovician) conodonts from the Cow Head Group, western Newfoundland. Journal of Paleontology, 52:444471.
Furnish, W. M. 1938. Conodonts from the Prairie du Chien Beds of the Upper Mississippi Valley. Journal of Paleontology, 12:318340.
Hinde, G. J. 1879. On conodonts from the Chazy and Cincinnati group of the Cambro-Silurian and from the Hamilton and Genesee Shale division of the Devonian in Canada and the United States. Geological Society of London, Quarterly Journal, 35:351369.
Hwang, I. S. 1987. Conodonts from the Maggol Formation in the Baegunsan Syncline, Sangdong Area, Kangweondo, Korea. Unpubl. , , Seoul, Korea, 120 p.
Jones, P. J. 1971. Lower Ordovician from the Bonaparte Gulf Basin and the Daily River Basin, northwestern Australia. Bureau of Mineral Resources of Australia Bulletin, 177, 80 p.
Kim, S. H. 1987. Conodonts from the Maggol Formation in the Baegunsan Syncline, Dongjeom, Kangweon-Do, Korea. Unpubl. , , Seoul, Korea, 130 p.
Kobayashi, T. 1960. The Cambro-Ordovician formations and faunas of the South Korea. Part 6, Paleontology 5, Journal of the Faculty of Science, University of Tokyo, 2(12):217277.
Kobayashi, T. 1966. Stratigraphy of the Choson Group in Korea and South Manchuria and its relation to the Cambro-Ordovician formations of other area. Section A, Journal of the Faculty of Science, University of Tokyo, 2(16):181.
Lamont, A., and Lindström, M. 1957. Arenigian and Llandeilian Cherts identified in the southern Uplands of Scotland by means of conodonts, etc. Edinburgh Geological Society Transactions, 17:6070.
Landing, E., Barnes, C. R., and Stevens, R. K. 1986. Tempo of earliest Ordovician graptolite faunal succession, conodont-based correlations from the Tremadocian of Quebec. Canadian Journal of Earth Science, 23:19281949.
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. The Journal of Geological Society of Korea, 24:356375.
Lee, H. Y. 1970. Conodonten aus der Choson-Gruppe (unteres Ordovizium) von Korea. Neues Jahrbuch Für Geologie und Paläontologie Abhandlungen, 136:303344.
Lee, H. Y. 1975. Conodonts from the Dumugol Formation (Lower Ordovician) South Korea. Journal of the Geological Society of Korea, 11:7593.
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. The Journal of the Geological Society of Korea, 7:89101.
Lee, J. H., Lee, H. Y., Yu, K. M., and Lee, B. S. 1989. Discovery of microfossils from limestone pebbles of the Hwanggangri Formation and their stratigraphic significance. The Journal of the Geological Society of Korea, 1:115.
Lee, Y. N., and Lee, H. Y. 1986. Conodont biostratigraphy of the Jigunsan Shale and Duwibong Limestone in the Nokjon-Sangdong area, Yeongweol-Gun, Kangweon-Do, Korea. Journal of the Paleontological Society of Korea, 2:114136.
Lindström, M. 1955. Conodonts from the lowermost Ordovician strata of south-central Sweden. Geologiska Föreningens Stockholm Förhandlingar, 76:517604.
Lindström, M. 1960. A lower–middle Ordovician succession of conodont fauna. Report International Geological Congress, 21st, 7:8896.
Lindström, M. 1971. Lower Ordovician conodonts of Europe, p. 2161. In Sweet, W. C. and Bergström, S. M. (eds.), Symposium on Conodont Biostratigraphy. Geological Society of America, Memoir 127.
Lindström, M. 1976. Conodont paleogeography of the Ordovician, p. 501522. In Bassett, M. G. (ed.), The Ordovician System. Proceedings of a Paleontological Association Symposium, University of Wales Press and National Museum of Wales, Cardiff.
McTavish, R. A. 1973. Prioniodontacean conodonts from the Emanuel, Formation (Lower Ordovician) of western Australia. Geologica et Palaeontologica, 7:2758.
Miller, J. F. 1969. Conodont fauna of the Notch Peak Limestone (Cambro-Ordovician), House Range, Utah. Journal of Paleontology, 43:413439.
Müller, K. J. 1959. Kambrische Conodonten. Zeitschrift der deutschen geologischen Gesellschaft, 111:434485.
Müller, K. J. 1964. Conodonten aus dem unteren Ordovizium von Sudkorea. Neues Jahrbuch Für Geologie und Palaontologie Abhandlungen, 119:93102.
Müller, K. J. 1973. Late Cambrian and Early Ordovician conodonts from northern Iran. Geological Survey of Iran Report, 30, 70 p.
Nogami, Yasuo. 1967. Kambrische Conodonten von China, Teil 2, Conodonten aus den hoch oberkambrischen Yencho-Schichten. Memoir College of Science, Kyoto University, Series B, 33:211219.
Nowlan, G. S. 1985. Late Cambrian and Early Ordovician conodonts from the Franklinian Miogeosyncline, Canadian Arctic Islands. Journal of Paleontology, 59:96122.
Pander, C. H. 1856. Monographie der fossilen Fische des Silurishen Systems der russisch-baltischen Gouvernements. Akademie de Wissenschaften, St. Petersburg, 91 p.
Pohler, S. L., Barnes, C. R., and James, N. P. 1987. Rconstructing a lost faunal realm: conodonts from mega-conglomerates of the Ordovician Cow Head group, western Newfoundland, p. 341362. In Austin, R. L. (ed.), Conodonts: Investigative Techniques and Applications. British Micropaleontological Series.
Repetski, J. E. 1982. Conodonts from El Paso Group (Lower Ordovician) of westernmost Texas and southern New Mexico. New Mexico Bureau of Mines and Mineral Resources, Memoir 40, 120 p.
Repetski, J. E., and Ethington, R. L. 1977. Conodonts from graptolite facies in the Ouachita Mountains, Arkansas and Oklahoma. Arkansas Geological Commission, Symposium on the Geology of the Ouachita Mountains, 1:92106.
Repetski, J. E., and Ethington, R. L. 1983. Rossodus manitouensis (Conodonta), a new Early Ordovician index fossil. Journal of Paleontology, 57:289301.
Repetski, J. E., and Perry, W. J. 1980. Conodont from structural windows through the Bane Dome, Giles Country, Virginia. Virginia Division of Mineral Resource, Publication 27, 15 p.
Sergeeva, S. P. 1963. Conodonts from the Lower Ordovician in the Leningrad region. Paleontologicheskii Zhurnal, 2:93108.
Serpagli, E. 1974. Lower Ordovician conodonts from Precordilleran Argentina (Province of San Juan). Societa Paleontologica Italiana, Bolletino, 13:1798.
Shaw, A. B. 1964. Time in Stratigraphy. McGraw-Hill, New York, 365 p.
Son, C. M., and Cheong, C. H. 1965. Sedimentary environment and geologic structure of Taebaegsan District. Seoul National University Journal, Science and Technology (A), 15, 31 p. [in Korean].
Stouge, S. 1984. Conodont of the Middle Ordovician Table Head Formation, Newfoundland. Fossils and Strata, 16, 145 p.
Stouge, S., and Bagnoli, G. 1988. Early Ordovician conodonts from Cow Head Peninsula, western Newfoundland. Palaeontographica Italica, 75:89179.
Tipnis, R. S., Chatterton, B. D. E., and Ludvigsen, R. 1978. Ordovician conodont biostratigraphy of the southern District of Mackenzie, Canadian, p. 3991. In Stelck, C. R. and Chatterton, B. D. E. (eds.), Western and Arctic Canadian Biostratigraphy. Geological Association of Canada, Special Paper 18.
Van Wamel, W. A. 1974. Conodont biostratigraphy of the Upper Cambrian and Lower Ordovician of northwestern Öland, south-eastern Sweden. Utrecht Micropaleontological Bulletin, 10, 122 p.
Webby, B. D., and Nicoll, R. S. (compilers). 1989. Australian Phanerozoic timescales: 2. Ordovician biostratigraphic chart and explanatory notes. Bureau of Mineral Resources, Australia, Record 1989/32, 42 p.
Yamanari, F. 1926. On the imbricated structure in Kogendo. Geographical Review, 2:2728[in Japanese].
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