Cailunguoshao Fm
Type Locality and Naming
LOCAL. The type section was not given. It was named by Ding Yunjie et al. in 1972 and quoted formally by Inner Mongolia Team of Regional Geological Survey in 1973 during mapping the Dong Ujimqin Qi Geological Map (the scale is 1:200,000).
Lithology and Thickness
Sandstone. The Lower part of the formation is dominated by clayey siltstone, intercalated with fine-grained feldspathic quartz sandstone and limestone lenses. The Upper part is mainly marked by medium-fine-grained arkose and pebble-bearing sandstone, intercalated with calcareous sandstone lenses. The outcrop thickness is 564 m.
Relationships and Distribution
Lower contact
Unknown: The bottom of the formation here is cut by faults. The next older formation in this region is the Tarbagete Fm.
Upper contact
Unknown: The top of the formation here is cut by faults. The next younger formation in this region is the Honggermiao Fm tuffs.
Regional extent
GeoJSON
Fossils
It yields brachiopods: Cyrtospirifer sp., Spinulicosta sp., Schuchertella sp., Spinatrypa sp. and coral: Stewartophyllum sp.
Age
Depositional setting
Additional Information