Anjuan Fm

Kashi-Yarkand region (NW Tarim). The type section is located nearby the Sheep Breeding Farm (E75°01′, N39°30′), Anjuan town, Ulugqat County, northwestern Tarim Basin in Xinjiang. It was formally named by the Regional Stratigraphic Chart Editorial Group of Xinjiang Uygur Autonomous Region (RSCEGXUAR) (1981).

Synonym: Gao et al. (2014b) treated the abandoned Zase (motley) Bed as a synonym of the Anjuan Fm.

The Anjuan Fm is divided into two members. Its Upper member is characterized by a series of brownish-red, brown, and brownish-grey mudstones, sandstones, and grey sandstones and mudstones. It contains fossil ostracods, foraminifers, charophytes, and sporopollens. Its thickness is in range of 486~2000 m.

Ostrocoda: Cyprideis littoralis, C. punctilata, Limnocythere iliensis, L. aligra, Dawinula stevensoni, Cyprinotus (Heterocypris) daductus, C. (H.) incurvus, Potamocypris sola, P. posneri, Cyclocypris cavernosa, Ilyocypris evidens, I. errabundis, I. dunschanensis, I. cornae, I. valvaetumidus, Parwinula sp., Eucypris sp., E. cf. inflate, E. concinna, E. longa, E. notapilis . Foraminifera: Rotalia beccarii, R. alta, Migros spiritensis, Ammonia beccarii, A. limnetes, Paraotalia umbonata, Melonis formosa, Cibicides borislavensis, Globorotalia sp., Cancris sp..Sporopollen: Pteris sp., Cupressaceae, Glyptostrobus (?) sp.. Ephedra sp., Abies, sp., Tsuga sp., Salix sp., Juglandaceae, Betulaceae, Quercus sp., Castansa sp., Rhus sp., Chenopodiaceae, Patamogetunaceae, Fricaceae, Selagenella sp., Adiantum sp., Pteris sp., Leiotriletes, Cupressaceae, Taxus sp., Ginkgo sp., Larix (?), Pinus sp., Cedrus sp., Conifera sp., Juglans sp., Pterocarya sp., Betula sp., Carpinus sp., Qstrya sp., Fagaceae, Fagus sp., Magnolia sp., Palmae, Ulmus sp., Trichomanes sp., Taxodiaceae.Charophyta: Chara sp..

It is interpreted as a river or riverside depositional environment.