Zhujiatai Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous, (14a)
Province:
Gansu, Qinghai
Lithology and Thickness
Not given, but implied to be alluvial fan facies.
Lithology Pattern:
Conglomerate
Relationships and Distribution
Lower contact
The base of the group is exposed incompletely. Shown as unconformity with next older unit being Xiangtang Fm by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China). Next older regional unit might be Upper Jurassic Datonghe Fm (Horton et al., 2004, Mesozoic-Cenozoic evolution of the Xining-Minhe and Dangchang basins, NE Tibetan Plateau; JGR v.109).
Upper contact
Next younger unit is the Yanguoxia Fm (mid-Hauterivian through Aptian)
Regional extent
GeoJSON
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Fossils
Age
Shown as Valanginian through mid-Hauterivian by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China).
Age Span:
Beginning stage:
Valanginian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
137.70
Ending stage:
Hauterivian
Fraction up in the ending stage:
0.5
Ending date (Ma):
129.55
Depositional setting
Depositional pattern:
Additional Information
Compiler: