Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania
Maintenance and Update Frequency: unknown Statement: Unknown Crustal architecture in formerly contiguous basement terranes in SE Australia, Tasmania and northern Victoria Land is a legacy of late Neoproterozoic-Cambrian subduction-related processes, culminating in formation of the Delamerian-Ross or...
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Online Access: | https://researchdata.edu.au/arc-continent-collision-western-tasmania/687559 https://pid.geoscience.gov.au/dataset/ga/70061 https://doi.org/10.1016/j.gr.2010.11.020 |
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ftands:oai:ands.org.au::687559 2024-09-15T17:46:25+00:00 Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania Commonwealth of Australia (Geoscience Australia) (owner) Commonwealth of Australia (Geoscience Australia) (pointOfContact) EGD (hasAssociationWith) GGIBSON (custodian) Gibson, G.M. (author) Ireland, T.R. (author) Manager Client Services (distributor) Manager Client Services (custodian) Morse, M.P. (author) Nayak, G. (author) Spatial: westlimit=140.0; southlimit=-44.0; eastlimit=156.0; northlimit=-28.0 https://researchdata.edu.au/arc-continent-collision-western-tasmania/687559 https://pid.geoscience.gov.au/dataset/ga/70061 https://doi.org/10.1016/j.gr.2010.11.020 unknown Australian Ocean Data Network https://researchdata.edu.au/arc-continent-collision-western-tasmania/687559 a05f7892-ef87-7506-e044-00144fdd4fa6 https://pid.geoscience.gov.au/dataset/ga/70061 doi:10.1016/j.gr.2010.11.020 EGD Commonwealth of Australia (Geoscience Australia) geoscientificInformation External Publication Article continental margins cultural boundaries structural geology marine AU-NSW AU-TAS AU-VIC EARTH SCIENCES Published_External publication ftands https://doi.org/10.1016/j.gr.2010.11.020 2024-08-06T01:59:00Z Maintenance and Update Frequency: unknown Statement: Unknown Crustal architecture in formerly contiguous basement terranes in SE Australia, Tasmania and northern Victoria Land is a legacy of late Neoproterozoic-Cambrian subduction-related processes, culminating in formation of the Delamerian-Ross orogen. Structures of Delamerian-Ross age were subsequently reactivated during late Mesozoic-Cenozoic Gondwana breakup, strongly influencing the geometry of continental rifting and providing clues about the origins and configuration of the pre-existing basement structures. An ocean-continent transform boundary developed off western Tasmania follows the trace of an older Paleozoic strike-slip structure (Avoca-Sorell fault) optimally oriented for reactivation during final separation of Australia from Antarctica. This boundary cuts across rocks preserving an earlier record of arc-continent collision during the course of which continental crust was subducted to mantle depths and Cambrian mafic-ultramafic island arc rocks were emplaced westwards over late Neoproterozoic passive margin sequences deposited during Rodinia breakup. Following a change to transcurrent motion along the Gondwana margin, Tasmania migrated northward along the Avoca fault system. This process arrested with entry of continental crust (Selwyn block) into a subduction zone located along the Heathcote-Governor fault systems, precipitating a second collision event accompanied by south-vergent thrusting, blueschist facies metamorphism and tectonic reworking of the already accreted Cambrian arc-forearc complex and underlying passive margin sequences. Text Antarc* Antarctica Victoria Land Research Data Australia (Australian National Data Service - ANDS) Gondwana Research 19 3 608 627 |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation External Publication Article continental margins cultural boundaries structural geology marine AU-NSW AU-TAS AU-VIC EARTH SCIENCES Published_External |
spellingShingle |
geoscientificInformation External Publication Article continental margins cultural boundaries structural geology marine AU-NSW AU-TAS AU-VIC EARTH SCIENCES Published_External Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
topic_facet |
geoscientificInformation External Publication Article continental margins cultural boundaries structural geology marine AU-NSW AU-TAS AU-VIC EARTH SCIENCES Published_External |
description |
Maintenance and Update Frequency: unknown Statement: Unknown Crustal architecture in formerly contiguous basement terranes in SE Australia, Tasmania and northern Victoria Land is a legacy of late Neoproterozoic-Cambrian subduction-related processes, culminating in formation of the Delamerian-Ross orogen. Structures of Delamerian-Ross age were subsequently reactivated during late Mesozoic-Cenozoic Gondwana breakup, strongly influencing the geometry of continental rifting and providing clues about the origins and configuration of the pre-existing basement structures. An ocean-continent transform boundary developed off western Tasmania follows the trace of an older Paleozoic strike-slip structure (Avoca-Sorell fault) optimally oriented for reactivation during final separation of Australia from Antarctica. This boundary cuts across rocks preserving an earlier record of arc-continent collision during the course of which continental crust was subducted to mantle depths and Cambrian mafic-ultramafic island arc rocks were emplaced westwards over late Neoproterozoic passive margin sequences deposited during Rodinia breakup. Following a change to transcurrent motion along the Gondwana margin, Tasmania migrated northward along the Avoca fault system. This process arrested with entry of continental crust (Selwyn block) into a subduction zone located along the Heathcote-Governor fault systems, precipitating a second collision event accompanied by south-vergent thrusting, blueschist facies metamorphism and tectonic reworking of the already accreted Cambrian arc-forearc complex and underlying passive margin sequences. |
author2 |
Commonwealth of Australia (Geoscience Australia) (owner) Commonwealth of Australia (Geoscience Australia) (pointOfContact) EGD (hasAssociationWith) GGIBSON (custodian) Gibson, G.M. (author) Ireland, T.R. (author) Manager Client Services (distributor) Manager Client Services (custodian) Morse, M.P. (author) Nayak, G. (author) |
format |
Text |
title |
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
title_short |
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
title_full |
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
title_fullStr |
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
title_full_unstemmed |
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
title_sort |
arc-continent collision and orogenesis in western tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western tasmania |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/arc-continent-collision-western-tasmania/687559 https://pid.geoscience.gov.au/dataset/ga/70061 https://doi.org/10.1016/j.gr.2010.11.020 |
op_coverage |
Spatial: westlimit=140.0; southlimit=-44.0; eastlimit=156.0; northlimit=-28.0 |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_source |
EGD Commonwealth of Australia (Geoscience Australia) |
op_relation |
https://researchdata.edu.au/arc-continent-collision-western-tasmania/687559 a05f7892-ef87-7506-e044-00144fdd4fa6 https://pid.geoscience.gov.au/dataset/ga/70061 doi:10.1016/j.gr.2010.11.020 |
op_doi |
https://doi.org/10.1016/j.gr.2010.11.020 |
container_title |
Gondwana Research |
container_volume |
19 |
container_issue |
3 |
container_start_page |
608 |
op_container_end_page |
627 |
_version_ |
1810494541948518400 |