Gouhudug Fm
Type Locality and Naming
The type section is located at Gouhudug, Aomugen, Sonid Left Banner, Inner Mongolia. It was named by Yang Daorong in 1983.
Lithology and Thickness
Sandstone and Siltstone. A suite of clastic rocks. The bottom is composed of purple-gray conglomerate; the middle and upper parts, purple-gray medium-fine-grained greywacke interbedded with calcareous siltstone; the top, interbeds of purple sandstone and siltstone. Thickness 163 m.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Upper Devonian Seribayanaobao Fm (not in Lexicon)
Upper contact
Conformable contact with the overlying Ulanhudug Fm
Regional extent
Distributed around Sailinwule to Alatate at the intersection of the Sonid Right and Left Banners, its features are close to those of the Hongshuiquan Fm in the Ergun Right Banner
GeoJSON
Fossils
The fossils in Lower part are dominated by Brachiopods Plicatifera? sp., Waagenoconchus nungermiaoensis, Camarotoechia turanica, Cyrtospirifer calcaratus, etc.; and in the Uppe part by Fusella ussiensis, F. kondonensis, Spirifer tornacensis, Camarotoechia acutirugata, etc.
Age
Depositional setting
It is interpreted as littoral-deltaic deposits
Additional Information