Maliuqiao Fm
Type Locality and Naming
It was named by Jin Chuntai et al. (1989). The type section is at the roadside from Longdanxi to Maliuqiao in the east part of the Erlangshan Mt. area in west Sichuan Province.
Synonym: (麻柳桥组)
Lithology and Thickness
It is subdivided into two members. Lower member, 46 m thick, consists of gray thick-bedded calcareous mudstone with limestone lenses. Upper member, over 116 m thick, is composed of gray thick-bedded sandy dolomite, dolomitic limestone, calcareous sandstone intercalated with mudstone; the base is marked by the dark gray medium-bedded limestone.
Relationships and Distribution
Lower contact
The formation rests conformably onto the underlying Sashuiyan Fm
Upper contact
The formation is conformably below the overlying Douniuzi Fm of the Devonian (not in current Devonian lexicon).
Regional extent
The exposures of the formation are distributed on the southern slope of the Erlangshan Mt.
GeoJSON
Fossils
It yields tetracorals Cystiphyllum, Microplasma, Zelophyllum, Cysticonophyllum; tabulate coral Favosites, Mesofavosites and brachiopods Howellella, Eospirifer in the lower member. And the upper member contains conodonts Lonchodina walliseri, Lingonodina silurica, Trichonodella inconstans, etc.
Age
Depositional setting
Additional Information