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Mesoproterozoic

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Taxidaban Gr

Taxidaban Gr


Period: 
Mesoproterozoic

Age Interval: 
Jixianian (Calymmian) Jx (9)


Province: 
Xinjiang

Type Locality and Naming

SE Tarim Basin. The Taxidaban Gr was named by Li Ximing et al. in 1958 and pub-lished by Gao Zhisheng et al. in 1961. The type locality is around Taxidaban in Altun Mts. at the juncture between Qinghai Province. and Xinjiang Weiwuerzhu Zizhiqu (Xinjiang Uygur Autonomous Region). The major reference section is in Kumutashilik, east of Qiemo on the north slope of Altun Mountain, Xinjiang.

Synonym: (塔昔大坂群)


Lithology and Thickness

For details see the entries on the component formations in the group (i.e., lower Muzisayi Fm and upper Jinyanshan Fm).


Lithology Pattern: 
Dolomitic limestone


Relationships and Distribution

Lower contact

The base is an unconformable contact onto the underlying the Beiketan Fm of the Baxkorgan Gr.

Upper contact

The top is unconformably overlain by the Surkuli Gr

Regional extent

SE Tarim Basin. The Taxidaban Gr is distributed mainly at Annanba, south slope of Taxidaban and Ruoqiang County in Altun Mountain at the juncture of Qinghai Province and Xinjiang


GeoJSON

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Fossils


Age 

Schematic stratigraphic column assigns it to Jixianian (Calymmian).

Age Span: 

    Beginning stage: 
Calymmian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
1,600.00

    Ending stage: 
Calymmian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
1,400.00

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Extracts from The Mesoproterozoic Erathem (chapter in Stratigraphic Lexicon of China, draft of 2022) by Gao Linzhi, Ding Xiaozhong, Zhang Chuanheng, Zhang Heng.