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Rajaram Formation
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Rajaram Fm base reconstruction

Rajaram Fm

Period: 
Calymmian

Age Interval: 
early Calymmian


Province: 
Proterozoic S.India Pranhita-Godavari west basin

Type Locality and Naming

Upper formation (4 of 4) of Mulag Gr


Lithology and Thickness

Limestone with algal laminations (Fig. - image D)

[Figure: Pranhita-Godavari valley basin Field photographs illustrating lithology and sedimentary structures. (A) Bollapalli Fm - Sandstones. (B) Pandikunta Limestone Fm - Stromatolites. (C) Jakaram Conglomerate Fm (Damala Gutta Conglomerate Fm) in lower part of Mulug Gr lower part of Mulug Gr - Intercalated conglomerate and sandstone. (D) Rajaram Fm - Limestones. (E) Sullavai Gr Venkatpur Sandstone Fm - Large aeolian cross-strata. (F) Albaka Gr - Cross-stratified sandstone. (G) Somandevara Quartzite Fm - Rippled unit. (H) Bodela Vagu Fm - Laminated lime mudstone. (from Saha et al., 2016)]


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Upper contact

Unconformity, overlain by Nalla Gutta Sandstone Fm conglomerate at base of Pengnaga Gr

Regional extent

Approximately coeval with Kopela Shale Fm and Po Gutta Sandstone Fm of Somanpalli Gr in Pranhita-Godavari east basin


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Calymmian

    Fraction up in beginning stage: 
0.18

    Beginning date (Ma): 
1,564.00

    Ending stage: 
Calymmian

    Fraction up in the ending stage: 
0.25

    Ending date (Ma):  
1,550.00

Depositional setting

Back-lagoon, tidal flat


Depositional pattern:  


Additional Information


Compiler:  

From: Saha D. (Dilip), Patranabis-Deb, S., and Colllins, A.S. (2016) Proterozoic stratigraphy of southern Indian cratons and global context. In: Stratigraphy & Timescales, 1: 1-59.