• Siddaraju M.S
• Basavarajappa H.T
• Maruthi N.E

The Dharwar Craton in Southern India is divided into two parts- the Western Dharwar Craton (WDC), Estern Dharwar Craton (EDC) separated by the Closepet Granite which was emplaced during the assembly of the EDC and WDC at -2.5 Ga and also the Dharwar craton is noticed in the centre of the craton where in adjacent all along the granites have melted during the emplacement of granite and granitoids along with the Chitradurga throust fault zoneis called Central Dharwar Craton (CDC). The formation and evolution of granitic provinces and batholiths are being increasingly studied, because of their importance for crustal evolution. Rayadurga area comes to Ananthapura District, having five kinds of litho units with economically viable minerals including Iron particularly in zones of gray granite, hornblende Gneiss, pegmatite and dyke rocks. Study area generally consist of several contemporaneous intrusions displaying common or similar geochemical and petrological features that are interpreted as cogenetic, but showing continuous batholith structures in Root zone to intrusion zone. The Closepet Granite has long been recognized as a unique magmatic body. However, most work was focused on its southern part of Closepet granite, near the amphibolite-granulite transition and less work has been performed on its central part which the area of Gap between Rayadurga and Kalyandurga area, this area is focused on not only granitic intrusion and composed of metamorphosed gneissic rocks, Amphibolites, Pegmatites and Pilitic zones, migmatites and Iron formations with lot of soil cover in Precambrian basement rocks of Darwar Craton. The study area belonging to the Andhra Pradesh composed of active and dynamic geological settings with economic mineral deposits. These deposits were noticed all along the lithological contacts of Basins and Schist Belts, adjesent to younger granites and granitoids of Dharwar Cratonin parts of Andhra Pradesh. The final result of this paper highlights the petrochemical Characteristics, better discrimination and detailed Geological mapping and geochemical signatures interprets the crustal evolution including evolution of Granitic rocks in the study area.

Petrography, Geochemistry, Rayadurga, Ananthapura district.

"Petro – Chemical Characteristics And Crustal Evolution Around Rayadurga Area, Eastern Dharwar Craton, Ananthpura District, Andhra Pradesh, South India.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.390-405, June 2019, Available :http://www.jetir.org/papers/JETIR1906W51.pdf

"Petro – Chemical Characteristics And Crustal Evolution Around Rayadurga Area, Eastern Dharwar Craton, Ananthpura District, Andhra Pradesh, South India.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp390-405, June 2019, Available at : http://www.jetir.org/papers/JETIR1906W51.pdf