Xiguayuan Formation

Xiguayuan Formation
Stratigraphic range: Barremian
~129–125 Ma

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Xiguayuan Formation; Stratigraphic range: Barremian; ~129–125 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
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	45.9°N 117.3°E
Approximate paleocoordinates	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:

Dou, Luxing; Jiagen Hou; Suihong Song; Li Zhang; Yuming Liu; Shuang Sun; Yongqiang Li; Xixin Wang, and Xiaoxu Ren, Ying Tang and Heng Tian. 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. 3344–3360. doi:10.1002/gj.3599 ISSN 0072-1050
Lockley, M. G., and M. Matsukawa. 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.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2

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