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Balfour Formation
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Balfour Fm base reconstruction

Balfour Fm


Period: 
Triassic, Permian

Age Interval: 
Capitanian – Early Induan


Province: 
Karoo Basin

Type Locality and Naming

Synonym:


Lithology and Thickness

Base (Oudeburg member) consists of fining-upward sandstone-dominated sequences, the middle (Barberskrans Member) is dominantly argillaceous. Near the top the formation changes from mudrock sequences (Palingkloof member) to more siltstone-rich with numerous clay chip-breccia lenses.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Middleton Fm (conformable)

Upper contact

Katberg Fm (conformable)

Regional extent

Karoo Basin


GeoJSON

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Fossils


Age 

Capitanian-early Induan

Age Span: 

    Beginning stage: 
Wordian

    Fraction up in beginning stage: 
0.8

    Beginning date (Ma): 
265.31

    Ending stage: 
Induan

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
250.89

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Rebecca Bobick (and Wen Du), modified from Fig. 2. from Catuneanu, O., et al., "The Karoo basins of south-central Africa", Journal of African Earth Sciences 43 (2005), 211-254