Xiguayuan Formation
| Xiguayuan Formation | |
|---|---|
| Stratigraphic range: Barremian ~ | |
| Type | Geological formation |
| Underlies | Quaternary sediments |
| Overlies | Zhangjiakou Formation |
| Thickness | Up to 2,500 m (8,200 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, siltstone, mudstone |
| Other | Volcanic and pyroclastic sediments |
| Location | |
| Coordinates | 45°54′N 117°18′E / 45.9°N 117.3°E |
| Approximate paleocoordinates | 48°48′N 117°24′E / 48.8°N 117.4°E |
| Region | Hebei |
| Country |  China |
   Xiguayuan Formation (China)  Xiguayuan Formation (Hebei) | |
The Xiguayuan Formation is an Early Cretaceous (Barremian) geologic formation in Hebei Province of China. Fossil ornithopod tracks have been reported from the formation.[1] It was deposited in a shallow lacustrine setting and is noted for its hyperpycnite facies.[2]
Fossil content
The formation has provided the following fossils:
- Ichnofossils
- Insects
- Bivalves
See also
References
Bibliography
- Dou, Luxing; Hou, Jiagen; Song, Suihong; Zhang, Li; Liu, Yuming; Sun, Shuang; Li, Yongqiang; Wang, Xixin; Ren, Ying Tang and Heng Tian, Xiaoxu (2020), "Sedimentary characteristics of hyperpycnites in a shallow lacustrine environment: A case study from the Lower Cretaceous Xiguayuan Formation, Luanping Basin, Northeast China", Geological Journal, 55 (5): 3344–3360, Bibcode:2020GeolJ..55.3344D, doi:10.1002/gj.3599, ISSN 0072-1050
- Lockley, M. G.; Matsukawa, M. (1998), "Lower Cretaceous vertebrate tracksites of East Asia. In S. G. Lucas, J. I. Kirkland, and J. W. Estep (eds.), Lower and Middle Cretaceous Terrestrial Ecosystems", New Mexico Museum of Natural History and Science Bulletin, 14: 135–142
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21