Central Island Fm
Period:
Permian
Age Interval:
P2-3 (95), Guadalupian Epoch (Middle Permian)
Province:
Hong Kong
Type Locality and Naming
The type section is on the Central Island of the Dapu Sea, Xinjie, Hong Kong. It was named by Li Zuoming in 1985.
Lithology and Thickness
Clastics: Interbeds of black shale and siltstone, intercalated with quartz-sandstone. Exposed thickness is 30 m.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Uncertain relationship with underlying strata.
Upper contact
Uncertain relationship with overlying strata.
GeoJSON
null
Fossils
Land plants: Gigantopterides of Pecopteris cf. norinii, Cordaites cf. schenkii, Compsopteris cf. contracta, etc.
Age
It belongs to the Maokou’an Subepoch till the Lopingian Epoch = Guadalupian Epoch (Middle Permian). [Note: Carboniferous lexicon chart column suggests (dotted) that it might be younger than the Tulugang Fm siltstone]
Age Span:
Beginning stage:
Capitanian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
264.34
Ending stage:
Wuchiapingian
Fraction up in the ending stage:
0.5
Ending date (Ma):
256.89
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Shang Qinghua