Seismic evidence for a lower-mantle origin of the Iceland Plume

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doi: 10.1038/25714
Authors:Shen, Yang; Solomon, Sean C.; Bjarnason, Ingi T.; Wolfe, Cecily J.
Author Affiliations:Primary:
Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States
Carnegie Institution of Washington, United States
University of Iceland, Iceland
Volume Title:Nature (London)
Source:Nature (London), 395(6697), p.62-65. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:1998
Note:In English. 30 refs.; illus.
Summary:Lateral variations in the depths of compressional-to-shear wave conversions at the two seismic discontinuities marking the top and bottom of the mantle transition zone beneath Iceland are reported. The transition zone is 20 km thinner than in the average Earth beneath central and S Iceland, but is of normal thickness beneath surrounding areas due to a hot and narrow thermal plume originating from the lower mantle. [R.K.H.]
Subsections:Igneous petrology
Subjects:410-km discontinuity; 670-km discontinuity; Body waves; Elastic waves; Geophysical methods; Geophysical surveys; Iceland Plume; Lateral heterogeneity; Lower mantle; Mantle; Mantle plumes; P-waves; S-waves; Seismic methods; Seismic waves; Surveys; Thickness; Tomography; Upwelling; Velocity structure
Abstract Numbers:99M/2137
Record ID:1998060425
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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