Melting of the Siberian mantle plume

Details Melting of the Siberian mantle plume Melting of the Siberian mantle plume

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.2209b&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 12, p. 2209-2212

Physics

3

Mineralogy And Petrology: Igneous Petrology, Mineralogy And Petrology: Major Element Composition, Geochemistry: Composition Of The Mantle, Planetology: Solid Surface Planets: Volcanism

Scientific paper

The Putorana basalts, comprising ~90% of the Siberian Traps (ST), have had their chemistry modified from primary tholeiitic picritic magmas by ~12% crystallization of olivine. Major-trace element ratios, and Nd isotopes of these lavas are consistent with their origin from a relatively undepleted plume by 12-16% rapid decompressional melting at ~50-80 km depths within the lithosphere.

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