Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland
A model of three-dimensional shear wave velocity variations in the mantle reveals a tilted low velocity anomaly extending from the core-mantle boundary (CMB) region beneath the southeastern Atlantic Ocean into the upper mantle beneath eastern Africa. This anomaly suggests that Cenozoic flood basalt...
Published in: | Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Association for the Advancement of Science
1999
|
Subjects: | |
Online Access: | https://authors.library.caltech.edu/52078/ https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910 |
id |
ftcaltechauth:oai:authors.library.caltech.edu:52078 |
---|---|
record_format |
openpolar |
spelling |
ftcaltechauth:oai:authors.library.caltech.edu:52078 2023-05-15T16:46:11+02:00 Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland Ritsema, Jeroen van Heijst, Hendrik-Jan Woodhouse, John H. 1999-12-03 https://authors.library.caltech.edu/52078/ https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910 unknown American Association for the Advancement of Science Ritsema, Jeroen and van Heijst, Hendrik-Jan and Woodhouse, John H. (1999) Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland. Science, 286 (5446). pp. 1925-1928. ISSN 0036-8075. doi:10.1126/science.286.5446.1925. https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910 <https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910> Article PeerReviewed 1999 ftcaltechauth https://doi.org/10.1126/science.286.5446.1925 2021-11-11T19:01:17Z A model of three-dimensional shear wave velocity variations in the mantle reveals a tilted low velocity anomaly extending from the core-mantle boundary (CMB) region beneath the southeastern Atlantic Ocean into the upper mantle beneath eastern Africa. This anomaly suggests that Cenozoic flood basalt volcanism in the Afar region and active rifting beneath the East African Rift is linked to an extensive thermal anomaly at the CMB more than 45 degrees away. In contrast, a low velocity anomaly beneath Iceland is confined to the upper mantle. Article in Journal/Newspaper Iceland Caltech Authors (California Institute of Technology) Science 286 5446 1925 1928 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
unknown |
description |
A model of three-dimensional shear wave velocity variations in the mantle reveals a tilted low velocity anomaly extending from the core-mantle boundary (CMB) region beneath the southeastern Atlantic Ocean into the upper mantle beneath eastern Africa. This anomaly suggests that Cenozoic flood basalt volcanism in the Afar region and active rifting beneath the East African Rift is linked to an extensive thermal anomaly at the CMB more than 45 degrees away. In contrast, a low velocity anomaly beneath Iceland is confined to the upper mantle. |
format |
Article in Journal/Newspaper |
author |
Ritsema, Jeroen van Heijst, Hendrik-Jan Woodhouse, John H. |
spellingShingle |
Ritsema, Jeroen van Heijst, Hendrik-Jan Woodhouse, John H. Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
author_facet |
Ritsema, Jeroen van Heijst, Hendrik-Jan Woodhouse, John H. |
author_sort |
Ritsema, Jeroen |
title |
Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
title_short |
Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
title_full |
Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
title_fullStr |
Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
title_full_unstemmed |
Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland |
title_sort |
complex shear wave velocity structure imaged beneath africa and iceland |
publisher |
American Association for the Advancement of Science |
publishDate |
1999 |
url |
https://authors.library.caltech.edu/52078/ https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Ritsema, Jeroen and van Heijst, Hendrik-Jan and Woodhouse, John H. (1999) Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland. Science, 286 (5446). pp. 1925-1928. ISSN 0036-8075. doi:10.1126/science.286.5446.1925. https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910 <https://resolver.caltech.edu/CaltechAUTHORS:20141124-075055910> |
op_doi |
https://doi.org/10.1126/science.286.5446.1925 |
container_title |
Science |
container_volume |
286 |
container_issue |
5446 |
container_start_page |
1925 |
op_container_end_page |
1928 |
_version_ |
1766036304756211712 |