Qiketai Formation

The Qiketai Formation is a geological formation in Xinjiang, China. It is found within the Turpan-Hami Basin. It is roughly equivalent in age to the nearby Toutunhe Formation and Wucaiwan Formation of the Southern and Northern Junggar Basin, respectively. Tuffites within the unit have been dated to the Callovian stage of the Jurassic approximately 164.6 ± 1.4 ma.[1] The dinosaur Xinjiangtitan is known from the formation.[2]

Qiketai Formation Stratigraphic range: Callovian,164.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Unnamed formation equivalent to the Qigu Formation
Overlies	Sanjianfang Formation
Lithology
Primary	Sandstone
Other	Tuffite
Location
Region	Xinjiang
Country	China
Extent	Turpan-Hami Basin
Type section
Named for	Qiketai

References

1. Wu, Wen-hao; Zhou, Chang-Fu; Wings, Oliver; Toru, Sekiya; Dong, Zhi-ming (2013). "A new gigantic sauropod dinosaur from the Middle Jurassic of Shanshan, Xinjiang" (PDF). Global Geology (in Chinese). 32 (3): 437–446. doi:10.3969/j.issn.1004-5589.2013.03.002.
2. Maisch, Michael W.; Matzke, Andreas T. (2019-01-01). "First record of a eusauropod (Dinosauria: Sauropoda) from the Upper Jurassic Qigu-Formation (southern Junggar Basin, China), and a reconsideration of Late Jurassic sauropod diversity in Xinjiang". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 291 (1): 109–117. doi:10.1127/njgpa/2019/0792. ISSN 0077-7749.