Phun Phin Fm
Period:
Cretaceous
Age Interval:
Upper Cretaceous (3)
Province:
Sibumasu: Lower Peninsula
Type Locality and Naming
At Km 10 of road no 4038 from Lam Thap to Khlong Thom (Teerarungsigul and others, 1999). Parent unit: Thung Yai Gr (Trang Group).
Synonym: หมวดหินพุนพิน
[Figure: Geological map of the Thung Yai Gr in Khlong Thom-Bang Khan area, Peninsular Thailand (Meesook, 2011)]
Lithology and Thickness
Predominantly of red to reddish-brown, fine-grained sandstone, siltstone (up to 73 m thick at type section); overlain by conglomerate/breccias with both clast-supported and matrix supported. Thickness: 102-770 m to over 1,000 m.
[Figure: Generalized lithological column of the Thung Yai Gr in southern Peninsular Thailand (modified after Teerarungsigul et al. 1999). The upper three formations are Cretaceous while the lowest, the Khlong Min Fm, is Jurassic. Arrows indicate current directions determined from cross-bedding. (Meesook, 2011)]
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Sam Chom Fm (conformable)
Upper contact
Krabi Gr (unconformable)
Regional extent
Lower Peninsula: Nakhon Si Thammarat, Surat Thani, Krabi, and Trang provinces.
GeoJSON
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Fossils
Age
Uncertain. If the Thung Yai Gr spans entire Cretaceous, then this formation is late Cretaceous.
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
100.50
Ending stage:
Danian
Fraction up in the ending stage:
0.0
Ending date (Ma):
66.04
Depositional setting
Debris flows and Fluviatile (braided)
Depositional pattern:
Additional Information
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.