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Jafarabad Formation
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Jafarabad Fm base reconstruction

Jafarabad Fm

Period: 
Paleogene

Age Interval: 
Paleocene-Ypresian


Province: 
W.India Mumbai Offshore, W.India Saurashtra Basin

Type Locality and Naming

SUBSURFACE: Its type section is in Well SS-1, interval of 3884 to 4502 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.]. Reference well: Well OS-2-G-1, interval of 1648 to 1883 m.

Synonym: Jafrabad Fm (spelling)

[Figure: Lithostratigraphy in Mumbai Offshore blocks (from NDRDGH.gov.in; after Jitendra Misra, 2009)]


Lithology and Thickness

In Saurashtra Basin, it consists of alternating sequence of limestone/shale with few quartzite sandstone layers in lower parts. In OS-2-G-1 its thickness is 165 m, and increase towards Diu Arch. NDRDGH.gov Mumbai stratigraphic chart indicates claystone. Raju's chart had as marl.

[Figure 1: Formations and their reference sections in Mumbai Offshore Basin (after Pandey and Dave, 1998)]


Lithology Pattern: 
Shallow-marine marl


Relationships and Distribution

Lower contact

Overlies the Deccan Traps Fm volcanics / Laterities

Upper contact

Disconformity (upper Ypresian-lower Lutetian), overlain by Belapur Fm; or disconformity continues upward to base of Pipavav Fm or Diu Fm.

Regional extent

Saurashtra Basin and the Diu Block of northern Mumbai basin.


GeoJSON

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Fossils

N. burdigaliensis- Lokhartia hunti occurs in the upper part. The lower part of the formation is poorly fossiliferous.


Age 

NDRDGH.gov Mumbai stratigraphic chart indicates earliest-Danian to mid-Ypresian. Chart for Saurashtra Basin

Age Span: 

    Beginning stage: 
Danian

    Fraction up in beginning stage: 
0.4

    Beginning date (Ma): 
64.29

    Ending stage: 
Ypresian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
52.04

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

D.S.N Raju (Saurashtra basin); NDRDGH.gov Mumbai stratigraphic chart