The Zhiluo Formation is a geological formation in China, it is also alternatively considered a geological group under the name Zhiluo Group (formerly known as the Chiloo Group). It dates to the Middle Jurassic. It consists of sandstone, mudstone and siltstone of varying colours. It has received scientific attention for its uranium ore bodies present in the lower part of the formation.[1] Fossil theropod tracks have been reported from the formation.[2] These were described from two footprints found in Jiaoping Coal Mine by C. C. Young in 1966 as Shensipus tungchuanensis. These were in 2015 suggested to belong to Anomoepus.[3] The dinosaur Lingwulong has been suggested to have come from the strata of this formation, previously having been attributed to the underlying Yanan Formation.[4]
| Zhiluo Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Sub-units | Lower, Upper units |
| Underlies | Lower Cretaceous Dongsheng Formation |
| Overlies | Yanan Formation |
| Thickness | 100-200 metres |
| Lithology | |
| Primary | Sandstone, siltstone mudstone |
| Location | |
| Region | Shaanxi |
| Country |  China |
| Extent | Ordos Basin |
Fossil content
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Footnotes
edit- ^ Jin, Ruo-shi; Feng, Xiao-xi; Teng, Xue-ming; Nie, Feng-jun; Cao, Hai-yang; Hou, Hui-qun; Liu, Hong-xu; Miao, Pei-sen; Zhao, Hua-lei; Chen, Lu-lu; Zhu, Qiang (2020). "Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization". China Geology. 3 (1): 52–66. doi:10.31035/cg2020002. ISSN 2096-5192.
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Xing, Lida; Lockley, Martin G.; Tang, Yonggang; Klein, Hendrik; Zhang, Jianping; Persons, W. Scott; Dai, Hui; Ye, Yong (2015-01-02). "Theropod and Ornithischian Footprints from the Middle Jurassic Yanan Formation of Zizhou County, Shaanxi, China". Ichnos. 22 (1): 1–11. doi:10.1080/10420940.2014.985670. ISSN 1042-0940. S2CID 129509962.
- ^ Dai, Hui; Tan, Chao; Xiong, Can; Ma, Qingyu; Li, Ning; Yu, Haidong; Wei, Zhaoying; Wang, Ping; Yi, Jian; Wei, Guangbiao; You, Hailu; Ren, Xinxin (2022). "New macronarian from the Middle Jurassic of Chongqing, China: phylogenetic and biogeographic implications for neosauropod dinosaur evolution". Royal Society Open Science. 9 (11): 220794. doi:10.1098/rsos.220794. PMC 9627447. PMID 36340515.
References
edit- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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