Seismic evidence for small-scale heterogeneity throughout the Earth's mantle
Article Abstract:
Geophysics research indicates low energy wave-velocity earth mantle perturbations reaching approximately eight-kilometer distances can be reduced using the amplitude structure of short-period precursors in the seismic core phase PKP. The hypothesis assumes that short-wavelength topography at the core-mantle boundary is present rather than around the mantle base as suggested in other scientific hypotheses.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Seismological detection of a mantle plume?
Article Abstract:
A survey conducted of the mantle below the Bowie volcano spot, western Canada, shows a zone where the seismic velocities are low. At approximately 700 km depth, the central point of the plume is 150 km northeast away from the vertically projected Bowie seamount. A mantle plume with an amplitude of the anomaly with a temperature contrast of about 300 K was discovered in the lower mantle below Bowie.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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The chemical structure of the Hawaiian mantle plume
Article Abstract:
Electron microphobe and laser ablation inductively coupled plasma source mass spectrometry were used for examining major and trace element compositions of olivine-hosted melt inclusions from Hawaiian shield lavas. Results indicate the consistent representation of two mantle source components in all lavas and the domination of a single lava flow by one-mantle source component.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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