Albaka Gr

Traditionally, a thick succession of shelf sandstone, named as the Albaka Sandstone, was thought to be restricted to the eastern Proterozoic belt in the Pranhita-Godavari valley. The Albaka Sandstone unconformably overlies a deformed succession recognized as the Somanpalle Gr in the eastern belt. The sub-Albaka unconformity was also later traced in the western belt, and based on distinct lithostratigraphy and depositional motif the sandstoneshale succession overlying the Mulug Subgroup comprising Mulug Orthoquartzite - Mulug Shale Fm succession in the Mallampalli-Mulug area has been assigned to the Albaka Group

Sandstone, Claystone. Upward succession of Somandevra Quartzite Fm, Tippapuram Shale Fm, and Chalamala Sandstone Fm. The cumulative thickness is about 3200 m.

[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. (H) Bodela Vagu Fm - Laminated lime mudstone. (I) Somnur Fm - Heterolithic sandstone-shale with profuse desiccation crack in-fills. (J) Tarur Nala Fm - Ash beds of Kotturu Somanpalli. (K) Tarur Nala Fm - Graywacke-shale turbidite with cherty intervals. (from Saha et al., 2016)]

Storm-and-tide dominated shelf. The depositional environment varies from storm-dominated shoreface in the lower part through muddy inner shelf to storm-and-tide dominated shallow shelf.