Chedi Conglomerate Fm
Period:
Triassic
Age Interval:
Middle to Upper Triassic (3)
Province:
Sibumasu: Lower Peninsula
Type Locality and Naming
Type locality: Road cutting on the northern edge of Khuan Chedi, Sabayoi district, Songkhla province.
Synonym: หมวดหินกรวดมนเจดีย์, This formation was named Khuan Chedi Fm by Malaysian-Thai Working Groups (2006).
[Figure 1 : Generalized distribution of different Triassic sedimentary environments and some of the more important lithostratigraphic units, and their relations to the terranes. (The geology of Thailand, 2011) page 146]
Lithology and Thickness
Massive, poorly sorted, light grey to medium grey and brown conglomerate with clasts varying sizes from granule to pebble and sand matrix. Thickness: 250 m
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
Suan Cham Fm (conformably)
Upper contact
Khlong Kon Limestone Fm (conformably)
Regional extent
Na Thawi and Saba Yoi Districts, south and SE of Songkhla province, Sibumasu: Lower Peninsula. Correlation: Semanggol Fm in Malaysia.
GeoJSON
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Fossils
Age
Middle to Upper Triassic (Malaysian-Thai Working Groups, 2006), but originally proposed the Triassic (?); Induan – Anisian (inferred by Chonglakmani, C.P., 2011; Triassic chapter in Ridd et al., Geology of Thailand)
Age Span:
Beginning stage:
Induan
Fraction up in beginning stage:
0.0
Beginning date (Ma):
251.90
Ending stage:
Anisian
Fraction up in the ending stage:
1.0
Ending date (Ma):
241.50
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wen Du - modified from- Chonglakmani, C.P., 2011, Chapter 6 Triassic in Ridd, M.F., Barber, A.J., and Grow, M.J., editors, The Geology of Thailand, Geol. Soc. of London.；Lexicon of Stratigraphic Names of Thailand of 2013.