| Khok Kruat Formation | |
|---|---|
| Stratigraphic range: Aptian ~ | |
| Type | Geological formation |
| Unit of | Khorat Group |
| Underlies | Maha Sarakham Formation |
| Overlies | Phu Phan Formation |
| Lithology | |
| Primary | Sandstone, siltstone |
| Other | Conglomerate, shale |
| Location | |
| Coordinates | 15°54′N 102°00′E / 15.9°N 102.0°E |
| Approximate paleocoordinates | 16°18′N 105°18′E / 16.3°N 105.3°E |
| Region | Indochina |
| Country |  Thailand |
| Extent | Khorat Plateau |
| Type section | |
| Named by | Ward & Bunnag |
| Year defined | 1964 |
  Khok Kruat Formation (Thailand) | |
The Khok Kruat Formation (Thai: หมวดหินโคกกรวด) is a rock formation found in northeastern Thailand. It is the uppermost formation of the Khorat Group.[1] It is dated to the Aptian stage of the Early Cretaceous period, and is notable for its fossils of dinosaurs. It is equivalent to the Gres superieurs Formation of Laos.[2] The group is a fluvial formation consisting primarily of red siltstones and sandstones.[1]
- ^ a b Eric Buffetaut (2009). Late Palaeozoic and Mesozoic Ecosystems in SE Asia. Geological Society of London. p. 146. ISBN 978-1-86239-275-5.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. ISBN 0-520-24209-2.