Arc evolution: a magnetic perspective from the Antarctic Peninsula
The Antarctic Peninsula is a Mesozoic–Cenozoic magmatic arc built on Palaeozoic and younger basement. It was formed by processes related to the subduction of Pacific ocean floor at its western margin, although subduction has now ceased along most of its length. The peninsula features all the tectoni...
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Cambridge University Press
1996
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Online Access: | http://nora.nerc.ac.uk/id/eprint/515162/ https://doi.org/10.1017/S0016756800024511 |
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ftnerc:oai:nora.nerc.ac.uk:515162 2024-02-11T09:58:55+01:00 Arc evolution: a magnetic perspective from the Antarctic Peninsula Johnson, A. C. 1996 http://nora.nerc.ac.uk/id/eprint/515162/ https://doi.org/10.1017/S0016756800024511 unknown Cambridge University Press Johnson, A. C. 1996 Arc evolution: a magnetic perspective from the Antarctic Peninsula. Geological Magazine, 133 (6). 637-644. https://doi.org/10.1017/S0016756800024511 <https://doi.org/10.1017/S0016756800024511> Publication - Article PeerReviewed 1996 ftnerc https://doi.org/10.1017/S0016756800024511 2024-01-26T00:03:24Z The Antarctic Peninsula is a Mesozoic–Cenozoic magmatic arc built on Palaeozoic and younger basement. It was formed by processes related to the subduction of Pacific ocean floor at its western margin, although subduction has now ceased along most of its length. The peninsula features all the tectonic components commonly associated with a developing arc system: basement, accretionary complex, magmatic arc, arc-related basins, intra-arc extension and post-subduction volcanism. Seventeen thousand kilometres of high resolution aeromagnetic data have recently been collected in a transect across part of the arc, covering an area 290 by 230 km and incorporating examples of most of the above tectonic components. The new map reveals distinct magnetic signatures, which can now be related to each of these components in a way that was not possible with reconnaissance data sets. A characteristic magnetic anomaly pattern for each component is described and comparisons drawn with magnetic studies of other arc regions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Pacific Geological Magazine 133 06 637 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
The Antarctic Peninsula is a Mesozoic–Cenozoic magmatic arc built on Palaeozoic and younger basement. It was formed by processes related to the subduction of Pacific ocean floor at its western margin, although subduction has now ceased along most of its length. The peninsula features all the tectonic components commonly associated with a developing arc system: basement, accretionary complex, magmatic arc, arc-related basins, intra-arc extension and post-subduction volcanism. Seventeen thousand kilometres of high resolution aeromagnetic data have recently been collected in a transect across part of the arc, covering an area 290 by 230 km and incorporating examples of most of the above tectonic components. The new map reveals distinct magnetic signatures, which can now be related to each of these components in a way that was not possible with reconnaissance data sets. A characteristic magnetic anomaly pattern for each component is described and comparisons drawn with magnetic studies of other arc regions. |
format |
Article in Journal/Newspaper |
author |
Johnson, A. C. |
spellingShingle |
Johnson, A. C. Arc evolution: a magnetic perspective from the Antarctic Peninsula |
author_facet |
Johnson, A. C. |
author_sort |
Johnson, A. C. |
title |
Arc evolution: a magnetic perspective from the Antarctic Peninsula |
title_short |
Arc evolution: a magnetic perspective from the Antarctic Peninsula |
title_full |
Arc evolution: a magnetic perspective from the Antarctic Peninsula |
title_fullStr |
Arc evolution: a magnetic perspective from the Antarctic Peninsula |
title_full_unstemmed |
Arc evolution: a magnetic perspective from the Antarctic Peninsula |
title_sort |
arc evolution: a magnetic perspective from the antarctic peninsula |
publisher |
Cambridge University Press |
publishDate |
1996 |
url |
http://nora.nerc.ac.uk/id/eprint/515162/ https://doi.org/10.1017/S0016756800024511 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Pacific |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Pacific |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
Johnson, A. C. 1996 Arc evolution: a magnetic perspective from the Antarctic Peninsula. Geological Magazine, 133 (6). 637-644. https://doi.org/10.1017/S0016756800024511 <https://doi.org/10.1017/S0016756800024511> |
op_doi |
https://doi.org/10.1017/S0016756800024511 |
container_title |
Geological Magazine |
container_volume |
133 |
container_issue |
06 |
container_start_page |
637 |
_version_ |
1790594738421760000 |