Early and Late Alkali Igneous Pulses and a High-<sup>3</sup>He Plume Origin for the Deccan Flood Basalts

R. Basu, Asish; R. Renne, Paul; K. DasGupta, Deb; Teichmann, Friedrich; J. Poreda, Robert

doi:10.1126/science.261.5123.902

Public

Early and Late Alkali Igneous Pulses and a High-3He Plume Origin for the Deccan Flood Basalts

Published in Science • Aug 13, 1993

Authors:

Asish R. Basu

Paul R. Renne

Deb K. DasGupta

Abstract

Several alkalic igneous complexes of nephelinite-carbonatite affinities occur in extensional zones around a region of high heat flow and positive gravity anomaly within the continental flood basalt (CFB) province of Deccan, India. Biotites from two of the complexes yield (40)Ar/(39)Ar dates of 68.53...

Subject

Flood basalt

Deccan Traps

Basalt

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