Crustal architecture of central Victoria: results from the 2006 deep crustal reflection seismic survey
| Autor: | Phillip B Skladzien, R. A. Cayley, Peter John O'Shea, V. J. Morand, David Moore, Timothy J Rawling, Ross Costelloe, Aki Nakamura, R. J. Korsch, C. E. Willman |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Australian Journal of Earth Sciences. 58:113-156 |
| ISSN: | 1440-0952 0812-0099 |
| DOI: | 10.1080/08120099.2011.543151 |
| Popis: | A ∼400 km long deep crustal reflection seismic survey was acquired in central Victoria, Australia, in 2006. It has provided information on crustal architecture across the western Lachlan Orogen and has greatly added to the understanding of the tectonic evolution. The east-dipping Moyston Fault is confirmed as the suture between the Delamerian and western Lachlan Orogens, and is shown to extend down to the Moho. The Avoca Fault, the boundary between the Stawell and Bendigo Zones, is a west-dipping listric reverse fault that intersects the Moyston Fault at a depth of about 22 km, forming a V-shaped geometry. Both the Stawell and Bendigo Zones can be divided broadly into a lower crustal region of interlayered and imbricated metavolcanic and metasedimentary rocks and an upper crustal region of tightly folded metasedimentary rocks. The Stawell Zone was probably part of a Cambrian accretionary system along the eastern Gondwanaland margin, and mafic rocks may have been partly consumed by Cambrian subduction. Muc... |
| Databáze: | OpenAIRE |
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