Journal
ELEMENTS
Volume 1, Issue 5, Pages 265-269Publisher
MINERALOGICAL SOC AMER
DOI: 10.2113/gselements.1.5.265
Keywords
mantle plume; large igneous provinces; uplift; picrite
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Mantle plumes are columns of hot, solid material that originate deep in the mantle, probably at the core-mantle boundary. Laboratory and numerical models replicating conditions appropriate to the mantle show that mantle plumes have a regular and predictable shape that allows a number of testable predictions to be made. New mantle plumes are predicted to consist of a large head, 1000 km in diameter, followed by a narrower tail. Initial eruption of basalt from a plume head should be preceded by similar to 1000 m of domal uplift. High-temperature magmas are expected to dominate the first eruptive products of a new plume and should be concentrated near the centre of the volcanic province. All of these predictions are confirmed by observations.
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