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Braga Formation
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Braga Fm base reconstruction

Braga Fm

Period: 
Carboniferous, Permian

Age Interval: 
Kasimovian?-Sakmarian?


Province: 
Nepal Tethyan Himalaya

Type Locality and Naming

Upper-middle formation in Thini Chu Gr. Type area is east Manang.


Lithology and Thickness

Sandstone and claystone, including glacial-derived diamictites. Lithoclasts include sedimentary, granitoid and subordinate bimodal volcaniclastics. Up to 120 m thick.


Lithology Pattern: 
Glacial till


Relationships and Distribution

Lower contact

Overlies Bangba Fm of similar facies

Upper contact

Unconformity below Puchenpra Fm. "at the top of the Thini Chu Gr. a major regional unconformity correlatable with the unconformity separating in the N.W. Himalaya the Po Series [Po Gr] and Fenestella Shales [Fenestella Shales Fm] from the overlying Kuling Gr.

Regional extent

Diamictites characterize the Upper Carboniferous to lowermost Permian section of eastern Manang (Bordet et al., 1975), whereas in S. Tibet glacial deposits – indicating that Gondwana had begun to drift towards higher southern latitudes – occur already in the Lower Carboniferous (Garzanti and Sciunnach, 1997).


GeoJSON

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Fossils


Age 

Uncertain; within Kasimovian-Sakmarian span?

Age Span: 

    Beginning stage: 
Kasimovian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
307.02

    Ending stage: 
Sakmarian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
292.02

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Extracted from Garzanti (1999, "Stratigraphy and sedimentary history of the Nepal Tethys Himalaya passive margin", Jour. Asian Earth Sci., 17: 805-827]