Lushan Fm
Type Locality and Naming
Central Taiwan. The type section is located at Lushan Therma to east of Renai Town, Nantou County, Taiwan Province. It was named by Zhang L in 1963 and introduced by He C in 1975.
Lithology and Thickness
The uppermost part of Neogene strata of Jiliangshan Mountain. It is characterized by the interbeds of black-dark grey mud slate, phyllite and meta-sandstone intercalated with lenticular basalt and small amount of marl block. Foraminifera and calcareous nannofossils are yielded. The thickness is more than 2000 m.
Relationships and Distribution
Lower contact
Lushan Fm is conformable in contact to underlying Liguan Fm, and unconformable in contact to the underlying Dananao Gr.
Upper contact
Lushan Fm is unconformable in contact to overlying Bilushan Fm.
Regional extent
The formation appears in Lanyang Plain and extend southwards along Central Range.
GeoJSON
Fossils
Praeorbulina glomerosa, Orbulina universa, Globigerina praebulloides, Globoquadrina venzuelana, Globigerinoides sicanus, Helicosphaera ampliaperta, Sphenolithus heteromorphus, Catinaster coalitus, Discoaster exilis.
Age
Depositional setting
It is interpreted as an abysmal marine mud environment.
Additional Information