Authors / CoAuthors
Champion, D.C. | Bultitude, R.J. | Blevin, P.L.
Abstract
The New England Orogen (NEO) forms the easternmost part of continental Australia, being one of a number of identified orogenic belts within the Tasman Orogenic Zone of eastern Australia. The NEO borders parts of the Lachlan, Thomson and North Queensland Orogens (see Fig. 1), though actual contacts are largely obscured by the Sydney-Gunnedah-Bowen basin system and other cover rocks. The NEO consists of a collage of terranes and has a complex history that stretches from the Neoproterozoic to the Late Mesozoic, although most of the exposed geology is Devonian and younger. A major characteristic of the NEO in this convergent margin setting is the voluminous Carboniferous to Triassic magmatism, which forms a major component of the orogen. Importantly, this magmatism is not confined to the NEO. Carboniferous to mid Triassic felsic magmatism (ca. 350-220 Ma) (Post-Kanimblan Orogeny to Hunter-Bowen Orogeny) forms a major part of the Tasman Orogenic Zone, extending in a wide belt from central New South Wales (the Bathurst region) to islands within the Torres Straits, straddling the Lachlan, Thomson, New England and North Queensland Orogens (Fig. 1), as well as extending into the Proterozoic basement west of the Tasman Orogenic Zone in northern Queensland (Fig. 1). As such, the geochemical and isotopic characteristics of these magmatic rocks, and their regional variations, have the potential to provide significant information regarding the nature and age of the crust in these orogens, as well as to provide constraints on the relationship of the development of the NEO to the neighbouring orogens.
Product Type
nonGeographicDataset
eCat Id
71106
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Custodian
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- External Publication
- ( Theme )
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- geochemistry
- ( Theme )
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- isotopes
- ( Theme )
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- petrology
- ( Theme )
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- geodynamics
- ( Theme )
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- geology
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- AU-NSWAU-QLD
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2010-01-01T00:00:00
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unknown
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geoscientificInformation
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Unknown
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Extents
[-34.0, -15.0, 142.0, 154.0]
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Spatial Resolution
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