Yangliujing Formation
The Yangliujing Formation is a Middle Triassic geologic unit found in southern China. Most of the formation is represented by massive dolomites, indicative of a shallow-water depositional environment. Fossils are generally rare, but conodonts from the Anisian-Ladinian boundary (namely several species of Neogondolella) are known from the lower part of the formation. Some marine reptiles have been found in dolomitic limestone near Dingxiao, an area of Guizhou sometimes considered to preserve the upper part of the Yangliujing Formation. However, under a more restrictive definition of the Yangliujing Formation, the fossils of Dingxiao would instead belong to the overlying Zhuganpo Formation.[1][2]
| Yangliujing Formation Stratigraphic range: Upper Anisian - Ladinian | |
|---|---|
| Type | Geological formation |
| Underlies | Zhuganpo Formation |
| Overlies | Guanling Formation |
| Lithology | |
| Primary | dolostone |
| Other | limestone |
| Location | |
| Region | Guizhou Province, Yunnan Province |
| Country |  |
References
- Benton, Michael J.; Zhang, Qiyue; Hu, Shixue; Chen, Zhong-Qiang; Wen, Wen; Liu, Jun; Huang, Jinyuan; Zhou, Changyong; Xie, Tao; Tong, Jinnan; Choo, Brian (2013-10-01). "Exceptional vertebrate biotas from the Triassic of China, and the expansion of marine ecosystems after the Permo-Triassic mass extinction". Earth-Science Reviews. 125: 199–243. doi:10.1016/j.earscirev.2013.05.014. ISSN 0012-8252.
- Sun, Zuoyu; Jiang, Dayong; Ji, Cheng; Hao, Weicheng (2016-03-15). "Integrated biochronology for Triassic marine vertebrate faunas of Guizhou Province, South China". Journal of Asian Earth Sciences. 118: 101–110. doi:10.1016/j.jseaes.2016.01.004. ISSN 1367-9120.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.