Taoshuyuanzi Fm
Type Locality and Naming
Turpan-Hami region. Named the Taoshuyuanzi Series by the Xinjiang Petroleum Administration in 1956 and in the subsequent literature some geologists called it the Taoshuyuanzi Group or Taoshuyuanzi Formation. The naming section is located at Taoshuyuanzi northwest of Turpan County at the southern foot of Bogda Mountain, Xinjiang.
Synonym: Taoshuyuanzi Gr
Lithology and Thickness
This formation consists chiefly of a sequence of lacustrine red sandy mudstone and sandstone, except in mountainous areas and piedmont areas where conglomerate predominates. Near Taoshuyuanzi, Lower part is light brown and brownish yellow conglomerate, Middle part is white gypsum beds with red gypsiferous mudstone, Upper part is composed of brownish red mudstone and sandy mudstone with calcareous concretions. The total thickness is 368 m.
Relationships and Distribution
Lower contact
Disconformable contact with the Eocene Liankan Fm.
Upper contact
Disconformable contact with the Neogene Putaogou Fm.
Regional extent
The formation is best developed in the vicinity of Lianmuqin near Shanshan. This formation is of quite wide distribution. In the Turpan area it is mainly found in the Huoyanshan area, Qiketai, Shisanjianfang, Sanjianfang, Luotuofeng, Nandahu, Yandun, Wutongwoze, etc.; in the piedmont zone in the northern part it is seen at Taoshuyuanzi, Meiyaogou, Qijiaojing, etc.; in the piedmont zone of the southern part it is present in Yila Lake and the northwestern part of Kanggurta.
GeoJSON
Fossils
Except at the base where there occurs late Eocene to early Oligocene Cadurcodon ardynensis, most fossil mammals found are common mid-late Oligocene elements in Asia, of which the important ones are Amphechinus cf. rectus, Sinolagomys kansuensis, Tataromys cf. sigmodon, Didymoconus berkeyi, etc.
Age
Depositional setting
It is interpreted as lacustrine sediments
Additional Information