North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle
A thermal model of sea-floor spreading applied to the northern Mid-Atlantic Ridge at several latitudes suggests that lateral variations of upper mantle structure in both the asthenosphere and the lithosphere may exist beneath the ocean, extending from Iceland to the Azores. The variation of ocean ri...
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Oxford University Press
1973
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fthighwire:oai:open-archive.highwire.org:gji:33/4/405 2023-05-15T16:46:47+02:00 North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle Haigh, B. I. R. 1973-10-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/33/4/405 https://doi.org/10.1111/j.1365-246X.1973.tb02376.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/33/4/405 http://dx.doi.org/10.1111/j.1365-246X.1973.tb02376.x Copyright (C) 1973, Oxford University Press Articles TEXT 1973 fthighwire https://doi.org/10.1111/j.1365-246X.1973.tb02376.x 2013-05-28T08:09:22Z A thermal model of sea-floor spreading applied to the northern Mid-Atlantic Ridge at several latitudes suggests that lateral variations of upper mantle structure in both the asthenosphere and the lithosphere may exist beneath the ocean, extending from Iceland to the Azores. The variation of ocean ridge cross-sectional area and the general shallowing of the sea towards the north which occur in the Atlantic may be explained by sea-floor spreading taking place above an asthenosphere whose temperature at a given depth increases northwards, with Iceland perhaps the focus of the thermal field. The relationships between asthenospheric temperatures, lithospheric thicknesses and ocean ridge dimensions derived here should be applicable to studies of other ridges. Text Iceland North Atlantic HighWire Press (Stanford University) Mid-Atlantic Ridge Geophysical Journal International 33 4 405 420 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Articles |
spellingShingle |
Articles Haigh, B. I. R. North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
topic_facet |
Articles |
description |
A thermal model of sea-floor spreading applied to the northern Mid-Atlantic Ridge at several latitudes suggests that lateral variations of upper mantle structure in both the asthenosphere and the lithosphere may exist beneath the ocean, extending from Iceland to the Azores. The variation of ocean ridge cross-sectional area and the general shallowing of the sea towards the north which occur in the Atlantic may be explained by sea-floor spreading taking place above an asthenosphere whose temperature at a given depth increases northwards, with Iceland perhaps the focus of the thermal field. The relationships between asthenospheric temperatures, lithospheric thicknesses and ocean ridge dimensions derived here should be applicable to studies of other ridges. |
format |
Text |
author |
Haigh, B. I. R. |
author_facet |
Haigh, B. I. R. |
author_sort |
Haigh, B. I. R. |
title |
North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
title_short |
North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
title_full |
North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
title_fullStr |
North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
title_full_unstemmed |
North Atlantic Oceanic Topography and Lateral Variations in the Upper Mantle |
title_sort |
north atlantic oceanic topography and lateral variations in the upper mantle |
publisher |
Oxford University Press |
publishDate |
1973 |
url |
http://gji.oxfordjournals.org/cgi/content/short/33/4/405 https://doi.org/10.1111/j.1365-246X.1973.tb02376.x |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/33/4/405 http://dx.doi.org/10.1111/j.1365-246X.1973.tb02376.x |
op_rights |
Copyright (C) 1973, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.1973.tb02376.x |
container_title |
Geophysical Journal International |
container_volume |
33 |
container_issue |
4 |
container_start_page |
405 |
op_container_end_page |
420 |
_version_ |
1766036883994836992 |