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Mundra Formation
Click to display on map of the Ancient World at:
Mundra Fm base reconstruction

Mundra Fm

Period: 
Cretaceous

Age Interval: 
Santonian (Upper Cretaceous)


Province: 
W.India Kutch Basin

Type Locality and Naming

SUBSURFACE. Interval 2415-3055m in well SP-1-1. [Original Publication: Zutshi, P.L., Mittal, S.K and Shah, L. (1993) Lithostratigraphy of Indian Petroliferous Basins, Document IV, Kutch Saurashtra Basin, KDMIPE, ONGC Publication, pp 1-50.]

[Fig. Geological and structural map of Kutch, also showing the onshore and offshore wells drilled for oil exploration. (Map by Rasoul Sorkhabi in GeoExpro Dec2014, based on various sources including S.K. Biswas, Current Science, 25May2005)]


Lithology and Thickness

Clayey sandstone and Basalt. It consists of sandstone, laminated shale, carbonaceous streaks and thin basalt flows. 640 m in the well SP-1-1.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Unconformable with Bhuj Fm, it is marked by occurrences of thin basaltic flows

Upper contact

Disconformable with Deccan Traps Fm.

Regional extent


GeoJSON

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Fossils

Nannoplanktons like Watznaueria cf. barnesae w.cf.bayacki


Age 

Santonian (Upper Cretaceous) [although basalt flows suggest prelude to Deccan Traps in upper part?)

Age Span: 

    Beginning stage: 
Santonian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
84.68

    Ending stage: 
Santonian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
83.65

Depositional setting

Continental to shallow marine


Depositional pattern:  


Additional Information


Compiler:  

D.S.N Raju