Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints
The lithospheric and crustal structure of the Victoria Land continental block (Antarctica) has been studied by geological and geophysical surveys. Among them magnetovariational investigations (MV) have been addressed to highlight the deep electrical conductivity patterns which contribute to the unde...
Published in: | Annals of Geophysics |
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Online Access: | http://hdl.handle.net/11567/244533 https://doi.org/10.4401/ag-3640 |
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ftunivgenova:oai:iris.unige.it:11567/244533 2024-04-14T08:01:13+00:00 Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints ARMADILLO, EGIDIO BOZZO, EMANUELE FERRACCIOLI F. CANEVA G. CANEVA A. Armadillo, Egidio Ferraccioli, F. Bozzo, Emanuele Caneva, G. Caneva, A. 2000 STAMPA http://hdl.handle.net/11567/244533 https://doi.org/10.4401/ag-3640 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000087024300009 volume:43(2) firstpage:279 lastpage:288 numberofpages:10 journal:ANNALI DI GEOFISICA http://hdl.handle.net/11567/244533 doi:10.4401/ag-3640 info:eu-repo/semantics/article 2000 ftunivgenova https://doi.org/10.4401/ag-3640 2024-03-21T02:22:07Z The lithospheric and crustal structure of the Victoria Land continental block (Antarctica) has been studied by geological and geophysical surveys. Among them magnetovariational investigations (MV) have been addressed to highlight the deep electrical conductivity patterns which contribute to the understanding of continental rifting and tectonic setting of the region. The hypothetical event map for H linearly polarized perpendicular to the coast indicates a possible broad coast parallel conductivity anomaly zone. Despite the coast effect, this feature could be related to the deep upper mantle thermal anomaly leading to Cenozoic uplift of the Transantarctic Mountains rift flank. However, both the hypothetic event map polarized parallel to the coast and the induction arrows suggest that the area of enhanced conductivity may be confined to the Deep Freeze Range crustal block along the western flank of the Mesozoic Rennick Graben. We also discuss the possible association between increased conductivity over the Southern Cross block and extensive Cenozoic alkaline plutonism. Article in Journal/Newspaper Antarc* Antarctica Victoria Land Università degli Studi di Genova: CINECA IRIS Victoria Land Transantarctic Mountains Rennick ENVELOPE(161.500,161.500,-72.000,-72.000) Deep Freeze Range ENVELOPE(163.750,163.750,-74.250,-74.250) Annals of Geophysics 43 2 |
institution |
Open Polar |
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Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
The lithospheric and crustal structure of the Victoria Land continental block (Antarctica) has been studied by geological and geophysical surveys. Among them magnetovariational investigations (MV) have been addressed to highlight the deep electrical conductivity patterns which contribute to the understanding of continental rifting and tectonic setting of the region. The hypothetical event map for H linearly polarized perpendicular to the coast indicates a possible broad coast parallel conductivity anomaly zone. Despite the coast effect, this feature could be related to the deep upper mantle thermal anomaly leading to Cenozoic uplift of the Transantarctic Mountains rift flank. However, both the hypothetic event map polarized parallel to the coast and the induction arrows suggest that the area of enhanced conductivity may be confined to the Deep Freeze Range crustal block along the western flank of the Mesozoic Rennick Graben. We also discuss the possible association between increased conductivity over the Southern Cross block and extensive Cenozoic alkaline plutonism. |
author2 |
Armadillo, Egidio Ferraccioli, F. Bozzo, Emanuele Caneva, G. Caneva, A. |
format |
Article in Journal/Newspaper |
author |
ARMADILLO, EGIDIO BOZZO, EMANUELE FERRACCIOLI F. CANEVA G. CANEVA A. |
spellingShingle |
ARMADILLO, EGIDIO BOZZO, EMANUELE FERRACCIOLI F. CANEVA G. CANEVA A. Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
author_facet |
ARMADILLO, EGIDIO BOZZO, EMANUELE FERRACCIOLI F. CANEVA G. CANEVA A. |
author_sort |
ARMADILLO, EGIDIO |
title |
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
title_short |
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
title_full |
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
title_fullStr |
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
title_full_unstemmed |
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints |
title_sort |
assessment of deep electrical conductivity features of northern victoria land (antarctica) under other geophysical constraints |
publishDate |
2000 |
url |
http://hdl.handle.net/11567/244533 https://doi.org/10.4401/ag-3640 |
long_lat |
ENVELOPE(161.500,161.500,-72.000,-72.000) ENVELOPE(163.750,163.750,-74.250,-74.250) |
geographic |
Victoria Land Transantarctic Mountains Rennick Deep Freeze Range |
geographic_facet |
Victoria Land Transantarctic Mountains Rennick Deep Freeze Range |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000087024300009 volume:43(2) firstpage:279 lastpage:288 numberofpages:10 journal:ANNALI DI GEOFISICA http://hdl.handle.net/11567/244533 doi:10.4401/ag-3640 |
op_doi |
https://doi.org/10.4401/ag-3640 |
container_title |
Annals of Geophysics |
container_volume |
43 |
container_issue |
2 |
_version_ |
1796307984219897856 |