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

Mangrol Fm

Period: 
Quaternary

Age Interval: 
Middle Miocene to Recent.


Province: 
W.India Saurashtra Basin

Type Locality and Naming

LOCAL SUBSURFACE: Its type section is in well OS-II-D-1, interval 0-3600 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.]

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


Lithology and Thickness

Claystone. It consists predominantly of claystone units along with thin beds/stringers of sandstone/ siltstone and bioclastic debris. Sandstone is carbonaceous and rarely glauconitic. Its thickness is ca. 3600 m in OS-II-D-1; and thickness reduces towards Saurashtra Arch.

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


Lithology Pattern: 
Claystone


Relationships and Distribution

Lower contact

Lower boundary has not been encountered till the drilled depth of well OS-II-D-1.

Upper contact

Upper boundary is sea water.

Regional extent


GeoJSON

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Fossils

Praeorbulina sicanus, Globorotalia archeomenardii.


Age 

Middle Miocene to Recent.

Age Span: 

    Beginning stage: 
Tortonian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
11.63

    Ending stage: 
Holocene

    Fraction up in the ending stage: 
0.0

    Ending date (Ma):  
0.01

Depositional setting

Inner to outer shelf.


Depositional pattern:  


Additional Information


Compiler:  

D.S.N Raju