Koikuntla Limestone Fm
Lithology and Thickness
Cherty limestone. Thin-bedded gray micritic limestone with marly intercalations constitute the Koilkuntla Limestone with common development of cherty nodules (Fig. image H). Local development of algal laminate is also seen.
[Field photographs showing lithology and sedimentary features in the Kurnool Group. Banganapalle Quartzite Fm – (A) basal conglomerate of overlying granitic basement, and (B) thick matrix supported polymict conglomerate with apparent size grading. Narji Limestone Fm - (C) lower part with thin wavy bedded impure limestone, and (D) glauconitic sandstone interbeds in limestone; note pockets of lime pebble conglomerate. Owk Shale Fm - (E) Thinly laminated ash beds, and (F) transition from Owk Shale (lower half of photo) to Paniam Quartzite Fm. Paniam Quartzite Fm - (G) truncated wavy lamination. Koilkuntla Limestone Fm - (H) thin bedded argillaceous limestone, and (I) impure limestone-shale intercalation within the Koilkuntla Limestone Fm to Nandyal Shale Fm transition. (from Saha et al., 2016)]
Relationships and Distribution
Lower contact
Underlain by Paniam Quartzite Fm with a sharp transition.
Upper contact
The Koilkuntla Limestone grades upward into a brown-gray, color-laminated shale-calcareous Nandyal Shale Fm (Fig. image I).
Regional extent
GeoJSON
Fossils
Age
Depositional setting
Shallow marine
Additional Information