Sadong Fm
Period:
Carboniferous-Permian
Age Interval:
Middle Carboniferous-Early Permian
Province:
Pyeongam Basin-Central Korea
Type Locality and Naming
Pyeongam Supergroup
Synonym:
Reference section: Source: Geology and Sedimentology of the Korean Peninsula
Lithology and Thickness
Dark gray sandstone and shale with patchy limestone, bioturbated limestone, plant fossils, and coal-bearing intervals.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Underlain by the Hongjeom Fm (Manhang equivalent).
Upper contact
Overlain by the Gobangsan Fm (Hambaeksan equivalent).
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[126.46,39.12],[126.55,39.09],[126.64,39.07],[126.65,39.04],[126.59,38.98],[126.57,38.88],[126.54,38.81],[126.53,38.78],[126.62,38.77],[126.67,38.74],[126.75,38.74],[126.82,38.78],[126.9,38.85],[126.97,38.91],[127.01,38.96],[127.05,38.96],[127.06,38.92],[127.07,38.89],[127.14,38.9],[127.19,38.94],[127.24,38.98],[127.25,39.05],[127.27,39.12],[127.28,39.18],[127.28,39.28],[127.24,39.37],[127.26,39.43],[127.28,39.46],[127.32,39.49],[127.33,39.54],[127.3,39.57],[127.26,39.58],[127.23,39.58],[127.19,39.61],[127.18,39.63],[127.06,39.66],[126.98,39.67],[126.88,39.67],[126.82,39.6],[126.77,39.61],[126.74,39.66],[126.74,39.71],[126.71,39.75],[126.66,39.79],[126.6,39.81],[126.53,39.83],[126.42,39.83],[126.32,39.83],[126.24,39.82],[126.16,39.79],[126.08,39.72],[126.01,39.65],[125.94,39.59],[125.9,39.55],[125.89,39.48],[125.95,39.39],[125.98,39.29],[125.98,39.23],[125.89,39.16],[125.82,39.09],[125.74,39.02],[125.67,38.95],[125.56,38.87],[125.53,38.83],[125.58,38.75],[125.69,38.71],[125.81,38.67],[125.99,38.7],[126.02,38.74],[126.05,38.79],[126.12,38.82],[126.19,38.83],[126.35,38.83],[126.4,38.87],[126.43,38.94],[126.42,39.03],[126.45,39.08],[126.46,39.1],[126.46,39.1],[126.46,39.1],[126.46,39.12]]]]}}
Fossils
plant fossils and fusulinids used in the historical Geumcheon-Jangseong subdivision; crinoid stems and marine bioclasts also occur in limestone facies.
Age
Age Span:
Beginning stage:
Middle Carboniferous
Fraction up in beginning stage:
0.5
Beginning date (Ma):
329.10
Ending stage:
Early Permian
Fraction up in the ending stage:
0.4
Ending date (Ma):
280.09
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Source：Chough, S. K. (2013). Geology and sedimentology of the Korean Peninsula. Elsevier.