Abstract
The Peddavura greenstone Linear Belt, NW-SE trending, is formed in the Eastern part of the Dharwar Craton of south India, extended over 62.5 sq•km in Nalgonda and Guntur districts region. The entire belt is illustrated as Peninsular Gneiss. The Belt Study has attracted geologists for conducting further research to evaluate the crust forming process at the time of early volcanic eruption of Earth’s history. The South Indian Dharwar Craton depicts and exposes the crustal segments where geological activities took place consistently during the Precambrian. The PSB (Peddavura Schist Belt) mostly consists of meta volcanic (meta basalts), amphibolites, granites, dolerites, basaltic andesites, pegmatite and Banded Magnetite Quartzite’s (BMQ) rock types. The 20 represented rock samples made for thin section studies. Based on the Petrological studies minerals are showing uralitization, saussuritization in the granite with mylonite structures, perthite and dolerite are showing heavy metal such as rutile and other opaque minerals (Magnetite, hematite, and typical pyrite crystal) are present in different represented rock samples. The minerals are showing different alteration zones along with microstructures. Using the Petrological studies the minerals and rock types are identified in the study region.
Highlights
IntroductionThe Eastern Dharwar craton (EDC) is characterized by voluminous late Archaean Granitoids of 2.51 - 2.75 Ga, with minor gneisses TTG—Tonalite-TrondhjemiteGranodiorite and Migmatites, dominated by thin Volcanic Lithologies schist belt along Dharwar age
It seems that Chronologic and the Genetic bonds between plate tectonics and mantle thermal processes were Archaean Earth complex stages, while the Schist Belt Craton is metamorphosed of Greenschist to Amphibolites Facies regional metamorphism [1]
The greenstone belts commonly consist of komatiites, tholeiites, felsic volcanic rocks and sedimentary rocks like phyllites, banded iron formation (BIF) and carbonates
Summary
The EDC is characterized by voluminous late Archaean Granitoids of 2.51 - 2.75 Ga, with minor gneisses TTG—Tonalite-TrondhjemiteGranodiorite and Migmatites, dominated by thin Volcanic Lithologies schist belt along Dharwar age. It seems that Chronologic and the Genetic bonds between plate tectonics and mantle thermal processes were Archaean Earth complex stages, while the Schist Belt Craton is metamorphosed of Greenschist to Amphibolites Facies regional metamorphism [1]. Natural impact on the preserved mineral deposit, they formed an integral part of the tectonic process, of Geodynamic Settings, incorporating into any holistic Tectonic Terrain Such restructured constructions offer targeting tool to explore the conceptual requirements to discover and locate new mineral deposits in the provinces under study cover [2]. The Dharwar Craton is the largest craton in Indian peninsular having typical Archean greenstone-granite terranes with most of the major rock units ranging in age from Meso- to Neo-archean [6]
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