Tangjiawu Fm
Type Locality and Naming
Shu Wenbo (1930) proposed the Tangjiawu Sandstone. The type section is located at Tangjiawu Village, Fuyang County, Zejiang Province.
Synonym: (唐家坞组); Tangchianu Fm
Lithology and Thickness
The Tangjiawu Fm is dominated by purplish red sandstone and grayish green fine-to-medium-grained quartzose sandstone, intercalated with silty pelite. The thickness varies considerably from 670-1300 m.
Relationships and Distribution
Lower contact
The purplish red sandstone at the base of the formation represents the index bed of conformable contact of the formation with the underlying Kangshan Fm
Upper contact
The top of the formation is pseudo-conformably overlain by the Xihu Fm of the Upper Devonian.
Regional extent
The formation is distributed in Changhua-Anji, where the purplish red beds at the lower part of the formation are rather thick, and is also exposed in Changshan-Hangzhou, where those purplish red beds are less developed and reduced in thickness. The formation northwards may progressively be facies-changed into the Maoshan Fm, but the exact boundaries are difficult to be defined.
GeoJSON
Fossils
The main fossils are represented by microplants, such as Eupoikilofusa cabotti, Domasia elongata, Deunffia brevispinosa, etc., and, in addition, some fish detritus as well.
Age
Depositional setting
It belongs to near-shore littoral delta and river-bed clastic deposits.
Additional Information