Sao Khua Formation
Early Cretaceous geological formation in Thailand / From Wikipedia, the free encyclopedia
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The Sao Khua Formation (Thai: หมวดหินเสาขัว) is a middle member of the Khorat Group. It consists of an alteration of pale red to yellowish-gray, fine to medium-grained sandstone and grayish-reddish brown siltstone and clay. Rare pale red to light gray conglomerates, containing carbonate pebbles, are also characteristic of this formation. This geological formation in Thailand dates to the Early Cretaceous age, specifically the Valanginian through Hauterivian stages.[1]
Quick Facts Type, Unit of ...
Sao Khua Formation | |
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Stratigraphic range: late Valanginian-early Hauterivian ~133.6–132.1 Ma | |
Type | Geological formation |
Unit of | Khorat Group |
Underlies | Phu Phan Formation |
Overlies | Phra Wihan Formation |
Thickness | ~120 m (390 ft) |
Lithology | |
Primary | Sandstone, conglomerate |
Other | Siltstone, claystone |
Location | |
Coordinates | 16.7°N 102.3°E / 16.7; 102.3 |
Approximate paleocoordinates | 14.3°N 112.4°E / 14.3; 112.4 |
Region | Indochina |
Country | Thailand |
Extent | Khorat Plateau |
Type section | |
Named by | Ward & Bunnag |
Year defined | 1964 |
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Dinosaur remains are among the fossils that have been recovered from the formation.[2]