Nangang Fm
Type Locality and Naming
Northernmost Taiwan. The type section is located at Houlongxi in Chuhuangkeng Anticline along the bank of Longxi River, Miaoli County, Taiwan Province. It was named by Ishikawa Y. in 1931 and re-surveyed by He C. et al. in 1956.
Lithology and Thickness
It is characterized by the cinerous, thick to thin, calcareous fine sandstone and dark grey shale or siltstone. Foraminifera, Bivalves and Calcareous nannofossils are yielded. The thickness is 700-750 m.
Relationships and Distribution
Lower contact
It is conformable in contact to the underlying Shidi Fm.
Upper contact
It is conformable in contact to the overlying Nanzhuang Fm.
Regional extent
The formation is distributed in area around Miaoli County.
GeoJSON
Fossils
Foraminifera, Bivalvia, Calcareous nannofossils.
Age
Depositional setting
It is interpreted as an epicontinental marine environment.
Additional Information