Lalijian Fm
Type Locality and Naming
Anhui Geological Bureau 326 Geological Team named it in 1966. The named section is located at the tip of the plough near Yueshan, Huaining County, Anhui Province.
Synonym:
Lithology and Thickness
It is mainly composed of grayish to grayish-black sandstone, siltstone, sandy shale and grayish black carbonaceous or carbonaceous shale interbedded with unstable coal seam, and locally contains fine gravel, iron nodules or argillaceous nodules. It has horizontal bedding, microwave bedding and worm tube structure. The thickness is 18 to 75 m
Relationships and Distribution
Lower contact
Purplish red and brown yellow breccia at the bottom and underlying Tongtoujian Fm
Upper contact
Pebbled sandstone or conglomerate at the bottom of Jurassic Moshan Fm at the top and overlying are all conformable contacts.
Regional extent
This formation only appears in Wuhu-Anqing area, with stable lithology.
GeoJSON
Fossils
Wuhu to Anqing area contains plants Neocalamites carrerei, Equisetites cf. sarrani, Cladophlebis ichünensis, Cl. gracilis, Dictyophyllum exile, Thaumatopteris sp., Cycadocarpidium erdmanni
Age
Depositional setting
It is the product of weak reduction to oxidation environment.
Additional Information