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Fujin Formation

Fujin Fm


Period: 
Neogene

Age Interval: 
Miocene, N1, (13b,e)


Province: 
Heilongjiang

Type Locality and Naming

Songliao Basin. The type section is the well ZK16 section at the Erlongshan County in Fujin City, Heilongjiang Province. It was named by the Redaction Group of Strata Table of Heilongjiang Province in 1979 and was surveyed by a geological team of the Third Region of Heilongjiang Province in 1974.

Synonyms: It is synonymous with Huanan Fm.


Lithology and Thickness

It is characterized by the greyish-green, greyish-yellow, and grey sandy conglomerates, fine sandstones, siltstones, mudstones, and brown coals. The thickness is 332 m in the type section and various from 21 m to 465 m in the district.


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

The Fujin Fm is in faulted contact with the underlying Baoquanling Fm.

Upper contact

The Fujin Fm is in faulted contact with the overlying Chuandishan Fm.

Regional extent

The formation is distributed in the Fujin City, Heilongjiang Province.


GeoJSON

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Fossils

Mammals (Zygolophodon sp.), fish, sporopollens, diatoms, and plants (including Quercus, Populus, and Betula).


Age 


Age Span: 

    Beginning stage: 
Aquitanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
23.04

    Ending stage: 
Serravallian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
11.63

Depositional setting

Fluvio-lacustrine deposits in warm and wet environment.


Depositional pattern:  

Additional Information


Compiler:  

Tao Deng, Sukuan Hou, J.Z. Qigao, Q. Li, Q.Q. Shi, B.Y. Sun, S.Q. Wang, F.X. Wu