Petrography and Geochemistry of Dolerite Dykes at Gingee Area, Villupuram District, Tamilnadu, India

Abstract
Dykes intrusives of the Gingee area, Villupuram district, Tamilnadu, South India are chiefly composed of the clusters of mafic dykes found emplaced crisscrossing the entire district. They represent a significant phase of basic magmatism in the Southern Granlitic Terrain (SGT), which forms the Precambrian crust of the Southern Indian shield. Precambrian crust of the Earth constitutes nine cratons, namely regions in Asia and Indian subcontinent, Europe, Greenland, North America, South America, Africa, Australia and Antarctica. In this study reveals on dolerites in Gingee area based on petrography and geochemical analyzes. Petrography of the samples relects on ophitic to sub ophitic texture. IUGS classification shows basaltic nature.

201705025M.Petrography and Geochemistry of Dolerite Dykes at Gingee Area, Villupuram District, Tamilnadu, India pdf.

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