Kangma Fm
Period:
Permian
Age Interval:
P
(54b), Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)
(54b), Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)
Province:
Xizang (Tibet)
Type Locality and Naming
The type section is located in the area of Baidingpu to the east of the Kangma County town, Tibet. It was named by Zhang Binggao in 1974.
Lithology and Thickness
Claystone. Grey knotted slate. Thickness is about 100 m.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Next older regional unit is the Bilong Fm.
Upper contact
Conformable contact with the overlying Baidingpu Fm.
Regional extent
Distributed in the area of Kangma County.
GeoJSON
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Fossils
Yields a small amount of brachiopods as represented by Martinia, Attenuatella, Linoproductus, Stenoscisma, etc., whose stratigraphic horizon is corresponding to that of the Qubu Fm in the Himalayan stratigraphic region, belonging to the Qixia’an Subepoch of the Yangsingian Epoch.
Age
Qixia’an Subepoch of the Yangsingian Epoch = Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)
Age Span:
Beginning stage:
Kungurian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
283.30
Ending stage:
Kungurian
Fraction up in the ending stage:
0.4
Ending date (Ma):
279.73
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wang Yujing
GeoJSON estimate by Longgang Ye and Yuyin Li (Chengdu Univ. Tech. students)