Dujiacun Gr
Period:
Devonian
Age Interval:
D3 (29), Late Devonian
Province:
Yunnan
Type Locality and Naming
The type section is located at Dujiacun Village near Heyuanzhai in Shidian County, Yunnan Province. It was named by Fang Runsen in 1976 (unpublished).
Lithology and Thickness
Limestone. The Group is composed of gray to yellowish-pink medium-bedded crystalline limestone. The thickness is 200 m.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
The formation lies conformably on the underlying marl of the Heyuanzhai Fm.
Upper contact
Disconformably overlain by the gray sandy limestone with crinoid stems of the Lower Carboniferous.
Regional extent
The group is restrictly distributed in the Baoshan and Zhenkang areas.
GeoJSON
null
Fossils
It contains brachiopods, stromatopora and corals. The representative brachiopod is Tenticospirifer.
Age
Late Devonian
Age Span:
Beginning stage:
Frasnian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
378.90
Ending stage:
Frasnian
Fraction up in the ending stage:
1.0
Ending date (Ma):
371.10
Depositional setting
Depositional pattern:
Additional Information
Compiler:
(Xian Siyuan)