Qiangge Fm
Period:
Devonian
Age Interval:
D32 (32),
Province:
Xizang (Tibet)
Type Locality and Naming
The type section is located at Qiangge of Taoba, Changdu County of Xizhang. It was named by No 3 Regional Geological Team of Sichuan in 1972 and was published by Regional Geological Survey of Sichuan in 1982.
Lithology and Thickness
Limestone. The Qiangge Formation is composed of grayish-black to black limestone and clayey limestone intercalated with biogenetic limestone and calcareous mudstone. It is 380 m in thickness.
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
It has a conformable contact to the underlying Zhuogedong Fm
Upper contact
It has a conformable contact to the overlying Wuqingna Fm (Silurian)
Regional extent
GeoJSON
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Fossils
It yields abundant brachiopods: Yunnanella hsikuangshanensis, Tenticospirifer tenticulum, Cyrtospirifer sp.
Age
Late Devonian.
Age Span:
S
Beginning stage:
Famennian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
371.10
Ending stage:
Famennian
Fraction up in the ending stage:
1.0
Ending date (Ma):
359.30
Depositional setting
Depositional pattern:
Additional Information
Compiler:
(Xian Shiyuan)