| Miaogou Formation | |
|---|---|
| Stratigraphic range: late Early Cretaceous, | |
| Type | Geological formation |
| Unit of | Yangtaiwatan Basin[1] |
| Underlies | Baiyanghe Formation[2] |
| Lithology | |
| Primary | Sandstone, mudstone, muddy limestone and sandy conglomerate[1] |
| Location | |
| Coordinates | 40°12′N 105°44′E / 40.200°N 105.733°E |
| Region | Inner Mongolia |
| Country |  China |
  Miaogou Formation (China)  Miaogou Formation (Inner Mongolia) | |
The Miaogou Formation is a geological formation in Inner Mongolia, north China. While its absolute age is uncertain, it has been estimated to represent Early Cretaceous (around Aptian–Albian) sediments based on the faunal composition. Dinosaur remains are among the fossils that have been recovered from the formation.
- ^ a b Zhang, Shuai; Liu, Lihui; Liu, Qinfu; Zhang, Bingjie; Qiao, Zhichuan; Teppen, Brian J. (February 2021). "Genesis of Palygorskite in the Neogene Baiyanghe Formation in Yangtaiwatan Basin, Northwest China, Based on the Mineralogical Characteristics and Occurrence of Enriched Trace Elements and Ree". Clays and Clay Minerals. 69 (1): 23–37. doi:10.1007/s42860-020-00104-7. ISSN 0009-8604.
- ^ Liu, Lihui; Zhang, Shuai; Liu, Qinfu; Liu, Linsong; Deng, Youjun (September 2021). "Palaeoclimate, palaeosalinity and redox conditions control palygorskite claystone formation: an example from the Yangtaiwatan Basin, northwest China". Clay Minerals. 56 (3): 210–221. doi:10.1180/clm.2022.1. ISSN 0009-8558.