IJSR - International Journal of Scientific Research

R.Guru Bhaskar; Y. Venkatarami Reddy; V. Gope Naik

Volume : VIII, Issue : II, February - 2019

THE STRUCTURE AND GEOMORPHOLOGY OF THE HILLS NARJI LIMESTONE AS REFLECTORS OF THE CEMENT GRADE LIMESTONE IN BANAGANAPALLE AND BETAMCHERLA AREAS OF KURNOOL SUB-BASIN OF THE CUDDAPAH BASIN, ANDHRA PRADESH, INDIA

R. Guru Bhaskar, Y. Venkatarami Reddy, V. Gope Naik

Abstract :

The Kurnool Group of rocks are supposed to be sub–horizontal in disposition without any structure. In fact these formations exhibit dips up to < 5⁰ when observed carefully. Locally, the limestone reflects anticlines and synclines. Occasionally, gently plunging antiforms are also observed. A few joints of open type are noticed that taper down. Further, the hills constituted by the rocks of Kurnool Group reflect 2^nd order / mature topography, i.e., the synclinal hills and anticlinal valleys. This observation has been used to find out the middle massive limestone that is of cement grade especially if the terrain is covered by soil or by agricultural activity. This has been studied in detail in the Betamcherla and Banaganapalle mandals and found to be applicable to other mandals, where the terrain is mostly soil covered like Kolimigundla and other areas. By this study it can be stated whether the sub–crop in the covered terrain is dark grey limestone that has higher percentage of CaCO3 or light grey limestone that has higher to good percentage of CaCO3, i.e., is above the cut–off grade of 79% of CaCO3. The details are presented