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Nabibandar Formation
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Nabibandar Fm base reconstruction

Nabibandar Fm

Period: 
Neogene

Age Interval: 
Early Miocene


Province: 
W.India Saurashtra Basin

Type Locality and Naming

SUBSURFACE: Its type section is well in OS-2-1, interval of 2300 to 3444 m. [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.]

Synonym: Nabibandar Fm (spelling version is used by Directorate of Hydrocarbons)

[Figure 1: Index Map of Saurashtra Basin (from dghindia.gov.in)]


Lithology and Thickness

Limestone. Consists of white buff to grey moderately hard mudstone and wackestone, fossiliferous and pyritiferous. In OS-2-G-1, it is 283 m thick and increase further south and westward in deeper shelf.

[Figure 2: Generalized Stratigraphy of Saurashtra Basin (from dghindia.gov.in)]


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Lower boundary is unconformable with the Narayan Sarovar Fm. It coincides with the high gamma peak in well OS-2-G-1.

Upper contact

Upper boundary is conformable with the Dwaraka Fm.

Regional extent


GeoJSON

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Fossils

M. (L.) droogeri


Age 

Early Miocene.

Age Span: 

    Beginning stage: 
Aquitanian

    Fraction up in beginning stage: 
0.6

    Beginning date (Ma): 
21.49

    Ending stage: 
Langhian

    Fraction up in the ending stage: 
0.4

    Ending date (Ma):  
15.12

Depositional setting

Inner shelf.


Depositional pattern:  


Additional Information


Compiler:  

D.S.N Raju