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: | English |
Published: |
2016
|
Subjects: | |
Online Access: | https://doi.org/10.1126/science.286.5446.1925 https://ora.ox.ac.uk/objects/uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 |
id |
ftuloxford:oai:ora.ox.ac.uk:uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 |
---|---|
record_format |
openpolar |
spelling |
ftuloxford:oai:ora.ox.ac.uk:uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 2023-05-15T16:46:11+02:00 Complex shear wave velocity structure imaged beneath Africa and Iceland Ritsema, J van Heijst, H Woodhouse, J 2016-07-29 https://doi.org/10.1126/science.286.5446.1925 https://ora.ox.ac.uk/objects/uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 eng eng doi:10.1126/science.286.5446.1925 https://ora.ox.ac.uk/objects/uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 https://doi.org/10.1126/science.286.5446.1925 info:eu-repo/semantics/embargoedAccess Journal article 2016 ftuloxford https://doi.org/10.1126/science.286.5446.1925 2022-06-28T20:20:02Z 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 ORA - Oxford University Research Archive Science 286 5446 1925 1928 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
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, J van Heijst, H Woodhouse, J |
spellingShingle |
Ritsema, J van Heijst, H Woodhouse, J Complex shear wave velocity structure imaged beneath Africa and Iceland |
author_facet |
Ritsema, J van Heijst, H Woodhouse, J |
author_sort |
Ritsema, J |
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 |
publishDate |
2016 |
url |
https://doi.org/10.1126/science.286.5446.1925 https://ora.ox.ac.uk/objects/uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
doi:10.1126/science.286.5446.1925 https://ora.ox.ac.uk/objects/uuid:a2c7cdc3-4a6e-4702-a385-94ceaf5e25b6 https://doi.org/10.1126/science.286.5446.1925 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
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_ |
1766036298663985152 |