Early alkaline magmatism in the Deccan Traps: Implications for plume incubation and lithospheric rifting

Details Early alkaline magmatism in the Deccan Traps: Implications for plume incubation and lithospheric rifting Early alkaline magmatism in the Deccan Traps: Implications for plume incubation and lithospheric rifting

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pepi..104..371s&link_type=abstract

Physics of the Earth and Planetary Interiors, v. 104, p. 371-376.

Physics

4

Scientific paper

Significant lithospheric extension, which usually accompanies continental flood volcanism, has been generally thought to always follow the main volcanic episode. However, plume-derived, uncontaminated, early alkaline magmas from the Deccan Traps, India, indicate considerable lithospheric extension ~ 3 million yrs (MY) before the main tholeiitic phase. Indeed, such early alkaline magmatism known from many flood-basalt provinces of the world seems a necessary and natural consequence of plume head incubation, with lithospheric doming and rifting.

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