Phreatomagmatic eruptive centre from the Deccan Trap Province, Jabalpur, Central India

Abstract

Three volcanic vents in the Deccan Trap Province have been found 15 km SE of Jabalpur near Barela. They are close to a ENE striking lineament in the Narbada valley. The small diameter of the vents (60 to 80 m), low relief, highly granulated nature of the pyroclastic fill of the vents, lapilli and coarse to fine, ash grain size, nonvesicularity of the lapilli fragments, abundance of sideromelane over tachylite - all suggest that these vents represent sites of phreatomagmatic eruption.