Academic Journal
Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania
| العنوان: | Arc-continent collision and orogenesis in western Tasmanides: insights from reactivated basement structures and formation of an ocean-continent transform boundary off western Tasmania |
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| المساهمون: | 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) |
| المصدر: | EGD Commonwealth of Australia (Geoscience Australia) |
| بيانات النشر: | Australian Ocean Data Network |
| المجموعة: | Research Data Australia (Australian National Data Service - ANDS) |
| مصطلحات موضوعية: | geoscientificInformation, External Publication, Article, continental margins, cultural boundaries, structural geology, marine, AU-NSW, AU-TAS, AU-VIC, EARTH SCIENCES, Published_External |
| جغرافية الموضوع: | Spatial: westlimit=140.0, southlimit=-44.0, eastlimit=156.0, northlimit=-28.0 |
| الوصف: | 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. |
| نوع الوثيقة: | text |
| اللغة: | unknown |
| 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 |
| الاتاحة: | 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 |
| رقم الانضمام: | edsbas.D2F42A75 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.gr.2010.11.020 |
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