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Babaguru Formation
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Babaguru Fm base reconstruction

Babaguru Fm

Period: 
Neogene

Age Interval: 
Aquitanian (earliest Miocene)


Province: 
W.India Cambay Basin

Type Locality and Naming

OUTCROP: Named after Babaguru Dongri. Exposed near Babaguru Dongri and Well Broach-6 (interval 2430-2687 m). 257 m thickness in Well Broach-6 [Original Publication: Sudhakar, R. and Roy, T.K. (1959) Progress report on the geology of the tertiary formations of Broach and Surat Districts (1958-59). Unpublished ONGC report.]. Surface name proposed by Sudhakar and Roy (1959), extended into the sub surface by Chandra and Chowdhary (1969). Reference well: Well Nandej-3 (interval 885-1095 m), 210 m thickness.


Lithology and Thickness

Sandstone. In the type section, lithology consists of ferruginous current-bedded sandstone, conglomerate and clay. Maximum thickness about 130 m in outcrops and variable in deeper parts of the basin from 300 to 580 m.

[Figure 1: Rock units and their reference sections in Cambay Basin, (after Pandey et al., 1993)]

[Figure 2: Generalized stratigraphy of the Cambay Basin. (from Jaiswal and Bhattacharya, 2018, J.EarthSyst.Sci., 127:65)]


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

Its lower boundary is unconformable with the Tarapur Fm in the north and the Tarkeswar Fm in the southern part of the basin.

Upper contact

The upper boundary is conformable with the Kand Fm. [However, on Dr. Raju's chart for this basin, it underlies the Jhagadia Fm in these central-basin sections.]

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[71.47,24.96],[72.04,25.03],[72.95,23.89],[73.42,22.76],[73.38,22.06],[72.46,21.01],[71.47,24.96]]]]}}

Fossils

This formation is devoid of fauna but palynofossils like Cicatricosisporites venustus, Magnastriatites cauveriensis and Plypodisporites formosus are present.


Age 

Early Miocene

Age Span: 

    Beginning stage: 
Aquitanian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
23.04

    Ending stage: 
Burdigalian

    Fraction up in the ending stage: 
0.8

    Ending date (Ma):  
16.88

Depositional setting


Depositional pattern:  

Additional Information


Compiler:  

D.S.N Raju