Suining Fm
Period:
Jurassic
Age Interval:
Late Jurassic, (TJ79, TJ81)
Province:
Sichuan
Type Locality and Naming
North Sichuan Basin. Type section at Suining County, Sichuan Province. Named by Lee Y Y, ChenB F, 1939, Geological Review, 4(5): 339.
Synonym: 遂宁组, Suining Shale
Lithology and Thickness
Purplish red, lateritic red muddy shale with interbeds of quartzose sandstone occasionally.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Next older unit is the Shangshaximiao Fm claystone of Late Jurassic.
Upper contact
Regional extent
Central and north Sichuan Basin.
GeoJSON
null
Fossils
Renown for its dinosaur remains.
Age
Schematic strat column in previous "red Chinese Lexicon" implied that the Suining Fm was Tithonian. Diying Huang (2019; Jurassic integrative stratigraphy and timescale of China. Science China: Earth Sciences, v. 62) re-assigns this Suining Fm as Tithonian.
Age Span:
Beginning stage:
Tithonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
149.24
Ending stage:
Tithonian
Fraction up in the ending stage:
0.5
Ending date (Ma):
146.17
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information from Geological Formation Names of China (1866-2000), Springer.