Guifeng Gr
Period:
Cretaceous
Age Interval:
Late Cretaceous – Paleocene, K2-E1gG, (39a)
Province:
Jiangxi
Type Locality and Naming
The Guifeng Group was named by Li Zhonghong (1961) in the Xinjiang basin. The type locality is at Guifeng of Yiyang.
Lithology and Thickness
The Guifeng Group consists of volcanic clastic rocks, with intercalations of reddish brown conglomerate, sandstone, a layer of gravel-bearing sandstone on the top.
Lithology Pattern:
Volcanics
Relationships and Distribution
Lower contact
The Guifeng Group is unconformably overlying the Huobashan Gr and/or the Ganhou Gr.
Upper contact
The Guifeng Group is unconformably underlying the Yangmeiling Fm.
Regional extent
GeoJSON
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Fossils
None listed; but "distinction of yielding dinosaur eggs"
Age
Age Span:
Beginning stage:
Coniacian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
88.65
Ending stage:
Maastrichtian
Fraction up in the ending stage:
1.0
Ending date (Ma):
66.04
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wan Xiaoqiao