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Somandevra Quartzite Formation
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Somandevra Quartzite Fm base reconstruction

Somandevra Quartzite Fm

Period: 
Calymmian

Age Interval: 
latest Calymmian


Province: 
Proterozoic S.India Pranhita-Godavari east basin

Type Locality and Naming

Lower formation (1 of 3) of Albaka Gr


Lithology and Thickness

Sandstone. Subarkosic sandstone to quartz arenite with small lenses of pebbly arenite and conglomerate where profuse cross-strata and ripple marks are preserved (Figure – images F and G).

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


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

Unconformable on Po Gutta Sandstone Fm of uppermost Somanpalli Gr

Upper contact

Overlain by Tippapuram Shale Fm

Regional extent

Approximately coeval with Nalla Gutta Sandstone Fm and Pranhita Sandstone Fm of Pengnaga Gr in Pranhita-Godavari west basin


GeoJSON

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Fossils


Age 


Age Span: 

    Beginning stage: 
Calymmian

    Fraction up in beginning stage: 
0.75

    Beginning date (Ma): 
1,450.00

    Ending stage: 
Calymmian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
1,400.00

Depositional setting

Storm-dominated shoreface


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.