Eibana Fm
Type Locality and Naming
The type section lies from Aoqu to Eibana, 10 km southeast of Markam, Tibet. It was named by Wen Peiran in 1992.
Lithology and Thickness
Marl, Limestone and Volcaniclastics. The bottom is a thin bed of purple-red shale intercalated with limestone. Lower part is composed of gray-black lime shale interbedded with black carbonaceous marl. Upper part is light-gray and gray-black chert bands-bearing limestone, clayey and siliceous limestones, shale as well as intermediate volcanic breccia and debris. Thickness 114.2 m.
Relationships and Distribution
Lower contact
Disconformable contact with the Aoqu Fm
Upper contact
Conformable contact with the Lower Permian stratum (Mangcuo Fm). Coeval with the Lizha Fm limestone.
Regional extent
Distributed along Markam to Zadoi, and eastward to Jomda and Luna
GeoJSON
Fossils
Lower part yields Fusulinids Triticites bashkirius, T. dictyophyarus and Pseudofusulina zhasuensis; Brachiopod Neochonetes chaoi; Coral Lophocarnophyllum sp. Upper part yields Fusulinids Pseudoschwagerina cheni, P. pavlovi, Paraschwagerina shengi and Pseudofusulina krotowi; Coral Lytvophyllum sp.; Brachiopod Orthotichia chekiangesis
Age
Depositional setting
Additional Information