Songjiazhai Fm
Period:
Devonian
Age Interval:
D22 (30), Givetian (late Middle Devonian)
Province:
Yunnan
Type Locality and Naming
The type section is located at Songjiazhai of Jinping County, Yunnan Province.
It was named by the Sixth Team of Second Geological Survey of Yunnan Province (unpublished).
Lithology and Thickness
Shale. The formation, 240-300 m thick, is characterized by dark-gray to black shale intercalated with black thin-bedded limestone.
Lithology Pattern:
Pelagic marl
Relationships and Distribution
Lower contact
It rests conformably on the Maludong Fm.
Upper contact
It has an unknown upper boundary.
Regional extent
It is distributed in an area of Songjiazhai-Jingping Counties.
GeoJSON
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Age
Givetian (late Middle Devonian)
Age Span:
Beginning stage:
Givetian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
385.30
Ending stage:
Givetian
Fraction up in the ending stage:
1.0
Ending date (Ma):
378.90
Depositional setting
It is interpreted as a relatively deep-water facies.
Depositional pattern:
Additional Information
Compiler:
(Xian Shiyuan)