Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand
Data from New Zealand and northern Victoria Land, Antarctica, indicate that the Cambrian Takaka Terrane intra-oceanic arc/backarc assemblage and the Bowers Terrane intra-oceanic arc/back-arc assemblage were accreted to the Gondwana margin by the Late Cambrian. Compelling similarities between the arc...
Published in: | Australian Journal of Earth Sciences |
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Taylor & Francis
2009
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Online Access: | https://oceanrep.geomar.de/id/eprint/21252/ https://doi.org/10.1080/08120090902806339 |
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ftoceanrep:oai:oceanrep.geomar.de:21252 2023-05-15T14:06:37+02:00 Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand Bradshaw, J. D. Gutjahr, Marcus Weaver, S. D. Bassett, K. N. 2009 https://oceanrep.geomar.de/id/eprint/21252/ https://doi.org/10.1080/08120090902806339 unknown Taylor & Francis Bradshaw, J. D., Gutjahr, M. , Weaver, S. D. and Bassett, K. N. (2009) Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand. Australian Journal of Earth Sciences, 56 (4). pp. 587-594. DOI 10.1080/08120090902806339 <https://doi.org/10.1080/08120090902806339>. doi:10.1080/08120090902806339 info:eu-repo/semantics/closedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1080/08120090902806339 2023-04-07T15:09:13Z Data from New Zealand and northern Victoria Land, Antarctica, indicate that the Cambrian Takaka Terrane intra-oceanic arc/backarc assemblage and the Bowers Terrane intra-oceanic arc/back-arc assemblage were accreted to the Gondwana margin by the Late Cambrian. Compelling similarities between the arc rocks and the immediate post-arc sediments firmly place the two regions in the same tectonic framework and imply close paleogeographic proximity. Currently, the Ross Orogen is thought to be the result of sinistral oblique convergence with west-directed subduction, and accretion of the arc assemblages is attributed to closure of backarc basins. Syntectonic fluvial conglomerates in both regions attest to the development of fluvial systems draining both the accreted arc and the contemporaneous continental margin arc. Trilobite faunas indicate that fluvial sedimentation commenced earlier in New Zealand than in northern Victoria Land. In the context of the widely accepted sinistral oblique convergence model, these data suggest an original position for New Zealand to the south of northern Victoria Land, probably in the region of the southern Ross Sea. Article in Journal/Newspaper Antarc* Antarctica Ross Sea Victoria Land OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Austral Bowers ENVELOPE(164.083,164.083,-85.000,-85.000) New Zealand Ross Sea Victoria Land Australian Journal of Earth Sciences 56 4 587 594 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
unknown |
description |
Data from New Zealand and northern Victoria Land, Antarctica, indicate that the Cambrian Takaka Terrane intra-oceanic arc/backarc assemblage and the Bowers Terrane intra-oceanic arc/back-arc assemblage were accreted to the Gondwana margin by the Late Cambrian. Compelling similarities between the arc rocks and the immediate post-arc sediments firmly place the two regions in the same tectonic framework and imply close paleogeographic proximity. Currently, the Ross Orogen is thought to be the result of sinistral oblique convergence with west-directed subduction, and accretion of the arc assemblages is attributed to closure of backarc basins. Syntectonic fluvial conglomerates in both regions attest to the development of fluvial systems draining both the accreted arc and the contemporaneous continental margin arc. Trilobite faunas indicate that fluvial sedimentation commenced earlier in New Zealand than in northern Victoria Land. In the context of the widely accepted sinistral oblique convergence model, these data suggest an original position for New Zealand to the south of northern Victoria Land, probably in the region of the southern Ross Sea. |
format |
Article in Journal/Newspaper |
author |
Bradshaw, J. D. Gutjahr, Marcus Weaver, S. D. Bassett, K. N. |
spellingShingle |
Bradshaw, J. D. Gutjahr, Marcus Weaver, S. D. Bassett, K. N. Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
author_facet |
Bradshaw, J. D. Gutjahr, Marcus Weaver, S. D. Bassett, K. N. |
author_sort |
Bradshaw, J. D. |
title |
Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
title_short |
Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
title_full |
Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
title_fullStr |
Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
title_full_unstemmed |
Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand |
title_sort |
cambrian intra-oceanic arc accretion to the austral gondwana margin: constraints on the location of proto-new zealand |
publisher |
Taylor & Francis |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/21252/ https://doi.org/10.1080/08120090902806339 |
long_lat |
ENVELOPE(164.083,164.083,-85.000,-85.000) |
geographic |
Austral Bowers New Zealand Ross Sea Victoria Land |
geographic_facet |
Austral Bowers New Zealand Ross Sea Victoria Land |
genre |
Antarc* Antarctica Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica Ross Sea Victoria Land |
op_relation |
Bradshaw, J. D., Gutjahr, M. , Weaver, S. D. and Bassett, K. N. (2009) Cambrian intra-oceanic arc accretion to the austral Gondwana margin: constraints on the location of proto-New Zealand. Australian Journal of Earth Sciences, 56 (4). pp. 587-594. DOI 10.1080/08120090902806339 <https://doi.org/10.1080/08120090902806339>. doi:10.1080/08120090902806339 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/08120090902806339 |
container_title |
Australian Journal of Earth Sciences |
container_volume |
56 |
container_issue |
4 |
container_start_page |
587 |
op_container_end_page |
594 |
_version_ |
1766278611335118848 |