Huazhuang Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous, (14a)
Province:
Gansu, Qinghai
Lithology and Thickness
Not given, but implied to be lacustrine/fluvial to deltaic facies. Pending additional information, arbitrary shown as sandy claystone temporarily.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Next older unit is the lower Albian Hongkucheng Fm.
Upper contact
The top is bounded by the unconformable termination of tangerine mudstone and the appearance of conglomeratic sandstone of the Gansu Gr. Shown as unconformity with next younger unit being Minhe Fm by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China).
Regional extent
GeoJSON
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Fossils
Age
Shown as middle Albian by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China).
Age Span:
Beginning stage:
Albian
Fraction up in beginning stage:
0.25
Beginning date (Ma):
110.03
Ending stage:
Albian
Fraction up in the ending stage:
0.65
Ending date (Ma):
104.95
Depositional setting
Depositional pattern:
Additional Information
Compiler: