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Arlikatti Formation
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Arlikatti Fm base reconstruction

Arlikatti Fm


Period: 
Orosirian

Age Interval: 
Late Orosirian


Province: 
Proterozoic S.India Kaladgi Basin

Type Locality and Naming

Upper formation (8 of 9) of Kaladgi Gr and middle of its Simikere Subgroup (2 of 3)


Lithology and Thickness

Slate, chert, dolomite (Fig. – image B).

Figure: Upper part of the Lokapur Subgroup field photographs illustrating lithology and sedimentary structures. (A) Microbial mat structure in Yargatti Fm, dolomite, and limestone. (B) Arlikatti Fm, shale, siltstone, and chert exposed in railway cutting. Width of the photograph is ca. 5 m. (from Saha et al., 2016)]


Lithology Pattern: 
Continental marl


Relationships and Distribution

Lower contact

Underlain by Kundgari Fm sandstone

Upper contact

Overlain by Hoskatti Fm slate

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[74.23,16.22],[75.43,16.48],[76.18,16.14],[76,15.84],[74.49,15.82],[74.23,16.22]]]]}}

Fossils


Age 


Age Span: 

    Beginning stage: 
Orosirian

    Fraction up in beginning stage: 
0.65

    Beginning date (Ma): 
1,887.50

    Ending stage: 
Orosirian

    Fraction up in the ending stage: 
0.7

    Ending date (Ma):  
1,875.00

Depositional setting

Tidal flat with minor fluvial. Development of shallow water carbonate platform with microbial mats on top of fairly deep-water shale points to upbuilding of the carbonate platform, and shallowing up phase of basin development (Fig. – image 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.