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Yongqing Formation
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Yongqing Fm base reconstruction

Yongqing Fm

Period: 
Cretaceous

Age Interval: 
mid-Cretaceous; (20)


Province: 
Heilongjiang

Type Locality and Naming

Jiayin Basin. The Yongqing Formation was named by Sui Liancheng et al. (1981). It is limited in the Yiwuling District of Yichun City.


Lithology and Thickness

The Yongqing Formation is a group of volcanic clastic and sedimentary rocks. It is composed of yellowish brown, grayish white tuffaceous breccias, tuffaceous sandstone, grayish black tuffaceous mudstone and feldspar sandstone. It is 26-434 m thick in different localities.


Lithology Pattern: 
Volcanic ash


Relationships and Distribution

Lower contact

The formation unconformably overlies the Ganhe Fm or the Banzifang Fm; or the Meifeng Fm (as shown in the Jianyin column by Kosenko et al. (2021). [Note: the publications provided when compiling this entry were confusing.]

Upper contact

The top of the formation is shown as a discontinuity contact under the Fuminhe Fm volcanics.

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[128.41,49.48],[129.07,49.23],[129.9,48.71],[129.88,48.46],[129.85,48.17],[130.17,47.87],[130.14,47.68],[129.85,47.56],[129.32,47.54],[128.56,47.74],[127.99,47.92],[127.43,48.18],[126.91,48.4],[126.36,48.84],[126.23,49.29],[126.27,49.56],[126.65,49.73],[127.08,49.56],[127.61,49.5],[128.41,49.48]]]]}}

Fossils

Spore and pollen yield in the grayish black tuffaceous mudstone. They are gymnosperm Pinuspollenites, P. elongatus, Abietineaepollenite, Piceaepollenites, Piceites, Pinites, Parvisaccites, Keteleeria, Cedripites, Podocarpidites; Fern spore Deltoidospora hallii, Hsuisporites rugatus, Gleicheniidites senonicus, Densosisporites perinatus, Lycopdiumsporites ausyroclavatidites, Schizaeoisporites certus, Cicatricosisporites dorogensis.


Age 


Age Span: 

    Beginning stage: 
Aptian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
121.40

    Ending stage: 
Albian

    Fraction up in the ending stage: 
0.2

    Ending date (Ma):  
110.66

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Igor N. Kosenko, Jingeng Sha and Boris N. Shurygin (2021). Upper Mesozoic stratigraphy of Sikhote-Alin (Russian Far East) and northeastern China: Non-marine and marine correlations. Part 1: Upper Jurassic-Hauterivian AND 2. Barremian-Aptian. Cretaceous Research, 124: articles 104811 (https://doi.org/10.1016/j.cretres.2021.104811) AND 104812 (https://doi.org/10.1016/j.cretres.2021.104812)