Qugezhuang Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous, K1qg (27a)
Province:
Shandong
Type Locality and Naming
Jiaolai Basin. The Qugezhuang Formation was named by the No 1 Petroleum Exploration Team in 1962. The type locality is in the Longwangzhang Town of the Laiyang City. The key section is the Longwangzhang- Dataozhang section in Longwangzhang Village of Laiyang (120°48', 36°57').
Lithology and Thickness
The Qugezhuang Formation is a group of purple grey and purple red conglomerate, gravel-bearing sandstone and siltstone, intercalated with andesitic or rhyolitic rocks. It is 60 to 400 m thick.
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
The Qugezhuang Formation unconformably overlies the Longwangzhuang Fm or Yanjiazhuang Fm.
Upper contact
The Qugezhuang Formation unconformably underlies the Bamudi Fm.
Regional extent
GeoJSON
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Fossils
None listed
Age
Age Span:
Beginning stage:
Aptian
Fraction up in beginning stage:
0.1
Beginning date (Ma):
120.58
Ending stage:
Aptian
Fraction up in the ending stage:
0.3
Ending date (Ma):
118.94
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wan Xiaoqiao