Chumphon Redbeds Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous (4)
Province:
Sibumasu: Upper Peninsula
Type Locality and Naming
Type area:
Chumphon basin in Chumphon province
Synonym: หมวดหินสีแดงชุมพร
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Lithology and Thickness
Red sandstone interbedded with siltstone and shale, few bivalves and plant remains. Thickness: 350 m
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Implied to be unconformable on the Khao Lak Fm of middle Jurassic in this Chumphon Basin.
Upper contact
Need clarification. Might be the Sam Chom Fm conglomerates of mid-Cretaceous if it is the same succession as in the in the Thung Yai Gr in the nearby Nakhon Si Thammarat Basin.
Regional extent
Chumphon Basin
GeoJSON
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Fossils
Few bivalves and plant remains
Age
It is thought by Raksaskulwong (1994) to correlate with and be synonymous with the Lam Thap Fm of early Cretaceous in the Nakhon Si Thammarat Basin (nearby in the Lower Peninsula region); therefore the same age span is applied here.
Age Span:
Beginning stage:
Berriasian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
145.73
Ending stage:
Barremian
Fraction up in the ending stage:
1.0
Ending date (Ma):
126.30
Depositional setting
Depositional pattern:
Compiler:
Compiler Wen Du - modified from Lexicon of Stratigraphic Names of Thailand of 2013; Assanee Meesook, 2011, Chapter 8 Cretaceous in Ridd, M.F., Barber, A.J., and Grow, M.J., editors, The Geology of Thailand, Geol. Soc. of London.