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

Khadir Fm

Period: 
Jurassic

Age Interval: 
Bathonian to Oxfordian (mid-Jurassic)


Province: 
W.India Kutch Basin

Type Locality and Naming

Local: Type section is exposed at Cheriybet on the north of Kakinida bet near Gadhada (Biswas, 1971)

[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

Formation is consisting of shale, limestone (occasionally oolitic), chert nodules with thick overlying sandstone and thin sandstone in the middle part; subordinate sandstone in upper part. Thick marine sandstone, fossiliferous shale, calcareous sandstone, coquina limestone in the basal part. Granite cobbles conglomerate presents towards the bottom. In the type area, it is +500 m


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Not exposed

Upper contact

Top of formation is marked by the beginning of overlying non-marine rocks of the Wagad Sandstone Fm above a thin fossiliferous conglomerate band near Gedi in north Wagad.

Regional extent

Upper part is equivalent to the Washtawa Fm


GeoJSON

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Fossils

Pelecypods and Gastropods


Age 

Based on the faunal assemblage and presumed stratigraphic superposition, Bathonian to Oxfordian (Middle Jurassic age) has been assigned

Age Span: 

    Beginning stage: 
Bathonian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
168.17

    Ending stage: 
Oxfordian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
158.16

Depositional setting

Piedmont, littoral to sub littoral (Transgression)


Depositional pattern:  


Additional Information


Compiler:  

Modified from Jitendriya Mishra (2009) Kutch-Saurasthra Basin, Chap. 17 in ONGC Bull 44