Abstract
Formation comprises a distinctive set of sedimentary layers, which can be traceable laterally and mapped as a unit. It is a fundamental unit for stratigraphic position in a regional scale and provides an important basis for the interpretation of depositional processes and environments. This paper reviews the occurrence of the Jangsan Formation at the base of the Taebaek Group (Cambrian-Ordovician) in the Taebaeksan Basin and refines the geologic map unit for sedimentary characteristics and stratigraphic position. The refined Jangsan Formation comprises a set of distinctive sandstone (quartzite) with a number of sedimentary facies, including conglomerate, conglomeratic sandstone, and mudstone. The “Myeonsan Formation” is limited to a localized set, and leads it fallen into disuse. The refined Jangsan Formation can be reliably correlated with the equivalent early Cambrian sandstone unit (Liguan Formation) in Shandong Province, China about a thousand kilometers apart and elsewhere in the northeast Asian continent.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cho, M., Cheong, W., Ernst, W.G., Kim, Y., and Yi, K., 2021, U-Pb detrital zircon ages of Cambrian-Ordovician sandstones from the Taebaeksan Basin, Korea: provenance variability in platform shelf sequences and paleogeographic implications. Bulletin of the Geological Society of America, 133, 488–504.
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.
Chough, S.K., 2013, Geology and Sedimentology of Korean Peninsula. Elsevier Insights, Amsterdam, 363 p.
Chough, S.K., Kwon, S.T., Ree, J.-H., and Choi, D.K., 2000, Tectonic and sedimentary evolution of the Korean peninsula: a review and new view. Earth-Science Reviews, 52, 175–235.
Chough, S.K., Lee, D.J., Ree, J.-H., Choh, S.-J., and Woo, J., 2016, Comment on “Depositional age and petrological characteristics of the Jangsan Formation in the Taebaeksan Basin, Korea-revisited” by Lee, Y.I., Choi, T., and Lim, H.S., Journal of the Geological Society of Korea, 52 (2016), 67–77. Journal of the Geological Society of Korea, 52, 961–967.
Geological Investigation Corps of Taebaegsan Region (GICTR), 1962, Geologic Atlas of Taebaegsan Region.
KIGAM, 2021, 1:50,000 geologic map of Korea. Geo Big Data Open Platform, https://data.kigam.re.kr/mgeo/map/main.do?process=geology_50k [Accessed on 30 June 2021].
Kim, H.S., Hwang, M.K., Ree, J.H., and Yi, K., 2013, Tectonic linkage between the Korean Peninsula and mainland Asia in the Cambrian: insights from U-Pb dating of detrital zircon. Earth and Planetary Science Letters, 368, 204–218.
Kim J.H., Yoon, W.S., Choi, J.W., Kwon, H.S., Bae, G.H., and Cheong, S.W., 2000, Geological structures in the Tongri-Dogye and Sang-deog areas in the eastern part of the Samcheog Coalfield, Korea, Geosciences Journal, 4, 153–163.
Kim, J.Y., 1991, Stratigraphy of the Myeonsan Formation in Samcheog-gun, Kangwondo and Ponghwagun, Kyongsangbukdo. Journal of the Geological Society of Korea, 27, 225–245.
Kim, J.Y. and Cheong, C.H., 1987, The Precambrian-Cambrian boundary in the east of the Dongjeom Fault, Gangweon-do, Korea. Journal of the Geological Society of Korea, 23, 145–158.
Kwon, Y.K., Chough, S.K., Choi, D.K., and Lee, D.J., 2006, Sequence stratigraphy of the Taebaek Group (Cambrian-Ordovician), mid-east Korea. Sedimentary Geology, 192, 19–55.
Lee, C., Kwon, Y.K., Yeo, J.M., Kwon, Y.J. and Han, H.-C., 2020, U-Pb ages of detrital zircons in lower Palaeozoic quartzites of the Taebaeksan Basin, eastern Sino-Korean Block: sediment provenance response to relative sea-level changes. International Geology Review, 63, 2129–2145.
Lee, H.S., Chen, J., Han, Z., and Chough, S.K., 2018, Depositional processes and environmental changes during initial flooding of an epeiric platform: Liguan Formation (Cambrian Series 2), Shandong Province, China. Geosciences Journal, 22, 903–919.
Lee, Y. and Cho, M., 2020, Fluid-present partial melting of Paleoproterozoic Okbang Amphibolite in the Yeongnam Massif, Korea. Lithosphere, 2020, 8854615. https://doi.org/10.2113/2020/8854615
NACSN (North American Commission on Stratigraphic Nomenclature), 1983, North American stratigraphic code. American Association of Petroleum Geologists Bulletin, 67, 841–875.
Woo, J., Shinn, Y.J., Kwon, Y.K., and Chough, S.K., 2006, The Jangsan and Myeonsan Formations (Early Cambrian) of the Taebaek Group, mideast Korea: depositional processes and environments. Geosciences Journal, 10, 35–57.
Yun, S., 1979, Petrography, chemical composition, and depositional environments of the Cambro-Ordovician sedimentary sequence in the Yeonhwa I Mine area, southeastern Taebaegsan Region, Korea. Journal of the Geological Society of Korea, 14, 145–174.
Acknowledgments
The authors gratefully acknowledge discussion with Dr. W.-S. Kee on the stratigraphic position of the Jangsan Formation. We thank Dr. M. Cho and an anonymous reviewer for their helpful comments on the manuscript. This research was supported by the Ministry of Science and ICT (MIST) to JW (NRF No. 2019R1G1A100693). This work was also supported to HSL by the Basic Research Program of the Korea Institute of Geoscience and Mineral Resources (GP 2020-006) funded by MIST.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Chough, S.K., Kwon, Y.K., Lee, H.S. et al. The Jangsan Formation refined. Geosci J 26, 545–554 (2022). https://doi.org/10.1007/s12303-022-0006-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12303-022-0006-1