Sarabop Fm
Period:
Paleogene
Age Interval:
late Oligocene (6)
Province:
Sibumasu: Central Plain
Type Locality and Naming
Phitsanulok Basin (northern Central Plain). Lowest of 8 formations in the Phitsanulok Gr
Synonym:
[Figure: Map showing the Tertiary basins of Thailand, with Phetchabun basin highlighted. The solid black lines onshore are the principal rivers draining Northern and Central Thailand and the Khorat Plateau (Morley and Racey, 2011, page 224).]
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Lithology and Thickness
Alluvial fan coarse clastics
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
Overlies Paleozoic – boundary fault contact on west side of the basin.
Upper contact
Overlain by the Nnng Bua Fm
Regional extent
Phitsanulok Basin (northern Central Plain) is the largest individual rift basin complex in Thailand. Sukhothai and Kamphaeng Phet provinces.
GeoJSON
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Fossils
Age
Late Oligocene
Age Span:
Beginning stage:
Chattian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
28.09
Ending stage:
Aquitanian
Fraction up in the ending stage:
0.0
Ending date (Ma):
23.04
Depositional setting
Alluvial fans
Depositional pattern:
Additional Information
Compiler:
Wen Du - modified from Christopher K. Morley & Andrew Racey, 2011, Chapter 10 Tertiary stratigraphy in: Ridd, M.F., Barber, A.J., and Grow, M.J., editors, The Geology of Thailand, Geol. Soc. of London.; and Lexicon of Stratigraphic Names of Thailand of 2013.