Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Early Ordovician (Tremadocian) Graptolites from the Mungok Formation, Yeongwol, Korea: Biostratigraphy and Correlation

  • Kim, Jeong-Yul (Department of Earth Science Education, Korea National University of Education) ;
  • Cho, Hyun-Su (Department of Earth Science Education, Korea National University of Education) ;
  • Jin, Yeong-Pil (Department of Earth Science Education, Korea National University of Education)
  • Published : 2006.12.30
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Abstract

Early Ordovician graptolites from the Mungok Formation of Yeongwol area, Korea comprise seven species belonging to six genera: Callograptus curvithecalis, Callograptus sinicus, Aspidograptus lotolatzensis, Dendrograptus suni, Dictyonema uniforme, Adelograptus cf. tenellus, and Psigraptus jacksoni. Two graptolite zones with three subzones are recognized in the eight sections of the Mungok Formation. The Adelograptus Zone is correlated with (1) La 1b of the Lancefield Formation of Victoria, Australia, (2) the Adelograptus-Clonograptus Zone of the Yehli Formation of Jilin, China, and (3) the Adelograptus Zone of the Road River Formation of Yukon, Canada. It suggests that the upper part of the Mungok Formation corresponds to early Late Tremadocian of Early Ordovician.

Keywords

References

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