Duluanshan Fm
Type Locality and Naming
Southeast Taiwan. The type section is located at 15 km to north of Taidong County, Taiwan Province. It was named by Ooe Z. in 1939.
Synonyms: Toranzan Fm; Tuluanshan Fm
Lithology and Thickness
It is characterized by the Andesitic volcanic agglomerate, weakly sorted volcanic conglomerate and sandstone with tuff, and small amount of basalt and andesite with quartz. Foraminifera fossils and nannofossils are yielded. The thickness is 1000-1500 m.
Relationships and Distribution
Lower contact
It contacts to the underlying Qimei Igneous Complex (Paleogene) with unclear relation.
Upper contact
It contacts to the overlying Dagangkou Fm with unclear relation.
Regional extent
It is distributed along the whole Haian Range.
GeoJSON
Fossils
Sphenolithus abies, Reticulofenestra pseudoumbilica, Coccolithus pelagicus, Pseudoemiliania lacunose, Discoaster quinqueramus, Sphaeroidinella dehiscens, Orbulina universa, Sphaeroidinellopsis seminulina.
Age
Depositional setting
Additional Information