Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica)
Occurring in the Early Palaeozoic palaeomargin of the East Antarctica Craton, the Tonalite Belt of North Victoria Land is a narrow linear magmatic belt up to 200 km long, made up of strongly foliated tonalitic and granodioritic intrusions. They were synkinematically emplaced into the Lanterman-Murch...
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ftunivpisairis:oai:arpi.unipi.it:11568/161306 2024-04-14T08:03:12+00:00 Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) MUSUMECI, GIOVANNI Musumeci, Giovanni 1999 STAMPA http://hdl.handle.net/11568/161306 https://doi.org/10.1144/gsjgs.156.1.0177 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000078137000018 volume:156 firstpage:177 lastpage:189 numberofpages:13 journal:JOURNAL OF THE GEOLOGICAL SOCIETY http://hdl.handle.net/11568/161306 doi:10.1144/gsjgs.156.1.0177 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0032923956 terrane accretion syntectonic magmatism crustal deformation North Victoria Land Antarctica info:eu-repo/semantics/article 1999 ftunivpisairis https://doi.org/10.1144/gsjgs.156.1.0177 2024-03-21T18:34:04Z Occurring in the Early Palaeozoic palaeomargin of the East Antarctica Craton, the Tonalite Belt of North Victoria Land is a narrow linear magmatic belt up to 200 km long, made up of strongly foliated tonalitic and granodioritic intrusions. They were synkinematically emplaced into the Lanterman-Murchison Shear Zone, a major tectonic structure across which different tectono-metamorphic terranes were accreted during the Late Cambrian Ross Orogeny. The deformational and kinematic features of the intrusions indicate that strain and displacement during terrane accretion were partitioned into oblique thrust, high-angle thrust and strike-slip shear zones. From this it is deduced that a transpressional regime prevailed during Early Palaeozoic deformation and terrane accretion. This and other magmatic belts which exploited major tectonic structures in collisional margins, such as the Coast Plutonic Complex of NW America, are basic keys for understanding deformational processes and kinematic regimes during terrane accretion. Moreover, the occurrence of such types of magmatic belts might be regarded as a reliable indication of large scale strike-slip motion between accreting terranes in an oblique convergent setting. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa East Antarctica Murchison ENVELOPE(144.250,144.250,-67.317,-67.317) Victoria Land Journal of the Geological Society 156 1 177 189 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
terrane accretion syntectonic magmatism crustal deformation North Victoria Land Antarctica |
spellingShingle |
terrane accretion syntectonic magmatism crustal deformation North Victoria Land Antarctica MUSUMECI, GIOVANNI Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
topic_facet |
terrane accretion syntectonic magmatism crustal deformation North Victoria Land Antarctica |
description |
Occurring in the Early Palaeozoic palaeomargin of the East Antarctica Craton, the Tonalite Belt of North Victoria Land is a narrow linear magmatic belt up to 200 km long, made up of strongly foliated tonalitic and granodioritic intrusions. They were synkinematically emplaced into the Lanterman-Murchison Shear Zone, a major tectonic structure across which different tectono-metamorphic terranes were accreted during the Late Cambrian Ross Orogeny. The deformational and kinematic features of the intrusions indicate that strain and displacement during terrane accretion were partitioned into oblique thrust, high-angle thrust and strike-slip shear zones. From this it is deduced that a transpressional regime prevailed during Early Palaeozoic deformation and terrane accretion. This and other magmatic belts which exploited major tectonic structures in collisional margins, such as the Coast Plutonic Complex of NW America, are basic keys for understanding deformational processes and kinematic regimes during terrane accretion. Moreover, the occurrence of such types of magmatic belts might be regarded as a reliable indication of large scale strike-slip motion between accreting terranes in an oblique convergent setting. |
author2 |
Musumeci, Giovanni |
format |
Article in Journal/Newspaper |
author |
MUSUMECI, GIOVANNI |
author_facet |
MUSUMECI, GIOVANNI |
author_sort |
MUSUMECI, GIOVANNI |
title |
Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
title_short |
Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
title_full |
Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
title_fullStr |
Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
title_full_unstemmed |
Magmatic belts in accretionary margins, a key for tectonic evolution: the Tonalite Belt of North Victoria Land (East Antarctica) |
title_sort |
magmatic belts in accretionary margins, a key for tectonic evolution: the tonalite belt of north victoria land (east antarctica) |
publishDate |
1999 |
url |
http://hdl.handle.net/11568/161306 https://doi.org/10.1144/gsjgs.156.1.0177 |
long_lat |
ENVELOPE(144.250,144.250,-67.317,-67.317) |
geographic |
East Antarctica Murchison Victoria Land |
geographic_facet |
East Antarctica Murchison Victoria Land |
genre |
Antarc* Antarctica East Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica East Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000078137000018 volume:156 firstpage:177 lastpage:189 numberofpages:13 journal:JOURNAL OF THE GEOLOGICAL SOCIETY http://hdl.handle.net/11568/161306 doi:10.1144/gsjgs.156.1.0177 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0032923956 |
op_doi |
https://doi.org/10.1144/gsjgs.156.1.0177 |
container_title |
Journal of the Geological Society |
container_volume |
156 |
container_issue |
1 |
container_start_page |
177 |
op_container_end_page |
189 |
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1796299450708131840 |