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Kerur Formation
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Kerur Fm base reconstruction

Kerur Fm


Period: 
Tonian

Age Interval: 
late Tonian


Province: 
Proterozoic S.India Kaladgi Basin

Type Locality and Naming

Lower formation (1 of 2) of Badami Gr


Lithology and Thickness

Conglomerate, red-brown sandstone, shale. Texturally and mineralogically mature sandstone of the Kerur Formation, popularly known as Temple Arenite, points to an environment where rate of sediment input was in balance with the rate of creation of accommodation.

[Figure: Kerur Fm, Badami Gr, field photographs illustrating lithology and sedimentary structures (A) Temple arenite. (B) Closeup view of the sandstone showing widely varying palaeocurrent direction. Lens cap as scale in the center of photo. (from Saha et al., 2016)]


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

Angular unconformity on Hoskatti Fm (uppermost formation of Kaladgi Gr) pelagic shale, overlain by Kerur Fm conglomerate at base of Badami Gr = Basement uplift, folding and a hiatus in deposition follow the first cycle (Kaladgi Gr) of sedimentation in the Kaladgi Basin.

Upper contact

Overlain by Katageri Fm

Regional extent


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Tonian

    Fraction up in beginning stage: 
0.7

    Beginning date (Ma): 
804.00

    Ending stage: 
Tonian

    Fraction up in the ending stage: 
0.77

    Ending date (Ma):  
784.40

Depositional setting

Fluvial to tidal. Paleocurrent analysis of the Ramdurg Fm at base of the underlying Kaladgi Gr indicates northwest to westerly flow. However, during deposition of the Kerur Formation (Temple arenite) of the Badami Gr, the flow pattern changed a little with strong bimodality toward northeast and southwest indicating tidal activity, which played a major role in sorting and sculpturing the Temple arenite (Fig. A and B).


Depositional pattern:  


Additional Information


Compiler:  

From: Saha D. (Dilip), Patranabis-Deb, S., and Colllins, A.S. (2016) Proterozoic stratigraphy of southern Indian cratons and global context. In: Stratigraphy & Timescales, 1: 1-59.