MELTING OF THE SIBERIAN MANTLE PLUME

Authors
BASU AR HANNIGAN RE JACOBSEN SB
Citation
Ar. Basu et al., MELTING OF THE SIBERIAN MANTLE PLUME, Geophysical research letters, 25(12), 1998, pp. 2209-2212
Citations number
17
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
25
Issue
12
Year of publication
1998
Pages
2209 - 2212
Database
ISI
SICI code
0094-8276(1998)25:12<2209:MOTSMP>2.0.ZU;2-X
Abstract
The Putorana basalts, comprising similar to 90% of the Siberian Traps (ST), have had their chemistry modified from primary tholeiitic picrit ic magmas by similar to 12% crystallization of olivine. Major-trace el ement ratios, and Nd isotopes of these lavas are consistent with their origin from a relatively undepleted plume by 12-16% rapid decompressi onal melting at similar to 50-80 km depths within the lithosphere.