Tongguling Fm
Period:
Cretaceous
Age Interval:
Late Cretaceous, K2tg, (42e)
Province:
Guangdong
Type Locality and Naming
The name of Tongguling Formation was given by the Maoming Geological Company of Guangdong in 1973. The type locality is the Tongguling area of the Maoming basin. Type section is down the No 13 borehole of Maoming (110º55', 21º41').
Lithology and Thickness
The formation is composed of brownish red conglomerate, sandy conglomerate, sandstone, siltstone and silty mudstone. It is 38 to 843 m thick.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
The formation is unconformably overlying the Sanyajiang Fm.
Upper contact
The formation is underlying the Shangtong Fm.
Regional extent
GeoJSON
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Fossils
The formation yields ostracods Talicypridea parallela, T. quadrata and T. tumida.
Age
Not given; put as late-Late Cret for graphic purposes.
Age Span:
Beginning stage:
Coniacian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
89.39
Ending stage:
Campanian
Fraction up in the ending stage:
1.0
Ending date (Ma):
72.17
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wan Xiaoqiao