Longwangzhang Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous, K1lwz (27a)
Province:
Shandong
Type Locality and Naming
Jiaolai Basin. The Longwangzhang 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 at north side of the Longwangzhang Village of Laiyang (120°49', 36°57').
Lithology and Thickness
The Longwangzhang Formation is a group of grayish purple, grayish white, grayish green and grayish yellow sandstone, siltstone and sandy conglomerate.
[Figure: Longwangzhuang Formation in north side of Doushan Village, east to Laiyang City]
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
The Longwangzhang Formation is conformably overlying the Shuinan Fm.
Upper contact
Shown in Xi et al. (2019) strat column as underlying the Houkuang Fm and/or the Qugezhuang Fm.
Regional extent
GeoJSON
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Fossils
None listed
Age
Age Span:
Beginning stage:
Barremian
Fraction up in beginning stage:
0.6
Beginning date (Ma):
123.44
Ending stage:
Aptian
Fraction up in the ending stage:
0.1
Ending date (Ma):
120.58
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wan Xiaoqiao