Nankangzhuang Fm
Type Locality and Naming
It was named by the No. 2 Reconnaissance Survey Party under the former Ministry of Geology. The naming section is located in the area of the Nankangzhuang Village of Dadianzi Township, Tieling County, Liaoning Province, with its reference section being situated at Songshu Gully of Dadianzi Township.
Synonym: （南康庄组）
Lithology and Thickness
Composed mainly of purple and yellow-brown shales, intercalated with thin-bedded siltstones and marls, with a thickness of the formation being of 1145 m.
Relationships and Distribution
Lower contact
It overlies disconformably the Songshugou Fm
Upper contact
No directly covering strata cover above it having been found. Regionally, the schematic strat column indicates the next younger unit as Houjiatun Fm
Regional extent
The formation is distributed essentially in the Dadianzi Basin.
GeoJSON
Fossils
In the Songshu-Gully and Nankangzhuang-Village sections the lower part of the formation yields spinicaudatans such as Tielingia reticulata, T. multicostata and T. cuizhenbuensis; Ostracods as represented by Cetacella sp., Darwinula changxinensis, D. giganinpudica, D. yangshulingensis, D. submagna and D. contracta; while its upper part yields such spinicaudatan fossils as Eosestheria brevis, E. cf. elliptica, E. cf. chii and E. cf. linjiangensis. To the north of Qiaotou area of Dadianzi Township the formation yields plant fossils as represented by Conipteris hymenophylloides, in addition to a small amount of bivalve and Gastropod fossils.
Age
Depositional setting
The formation belongs to deposits of alluvial-flat and lacustrine facies.
Additional Information