Qingshuiying Fm
Period:
Paleogene
Age Interval:
Oligocene (7)
Province:
Ningxia
Type Locality and Naming
Liupanshan-Helanshan region.
Lithology and Thickness
Thick saline lacustrine deposits marked by red mudstone, siltstone and gypsum horizons with fibrous gypsum veins (Jiang et al., 2007; Lin et al., 2010; Wang et al., 2011)
Lithology Pattern:
Gypsiferous claystone
Relationships and Distribution
Lower contact
Overlies the Eocene Sikouzi Fm
Upper contact
It unconformably underlies the late-Early and Middle Miocene Zhangenbao Fm.
Regional extent
GeoJSON
null
Fossils
Age
T. Deng et al. (2019; Neogene chapter of China Integrated Stratigraphy and Timescale) indicate a span of latest Eocene (?) through lower Oligocene
Age Span:
Beginning stage:
Priabonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
37.71
Ending stage:
Chattian
Fraction up in the ending stage:
0.25
Ending date (Ma):
26.22
Depositional setting
Depositional pattern:
Additional Information
Compiler: