Authors / CoAuthors
Raymond, O.L. | Liu, S.F. | Kilgour, P. | Retter, A.J. | Stewart, A.J. | Stewart, G.
Abstract
The surface geology of New South Wales comprises rocks ranging in age from the Palaeoproterozoic to recent. The oldest rocks are the strongly deformed and metamorphosed Willyama Supergroup of the Curnamona Craton in far western New South Wales. Neoproterozoic to Cambrian shallow marine to continental sediments and volcanics overlie the margin of the Curnamona Craton. The south-eastern part of New South Wales is dominated by the Palaeozoic sediments, volcanics and granites of the Lachlan Orogen. These rocks occur from the eastern Victorian border to the Cobar region and underlie the southern highlands. North-eastern New South Wales is underlain by the Palaeozoic to Mesozoic rocks of the New England Orogen. The Lachlan and New England Orogens are overlain by sedimentary basins of Permian to Recent age. Permian to Cretaceous sediments of the Sydney-Bowen, Gunnedah and Clarence-Moreton Basins overlie the two orogens in eastern New South Wales. Sediments of the Mesozoic Eromanga, Surat and Berri Basins occur in the north and west of New South Wales; and the Cainozoic Murray Basin covers the majority of the south-west of the state. The Cainozoic regolith units of New South Wales are represented in this dataset according to a simplified classification scheme which is being applied nationally at 1:1 000 000 scale. The dataset was generalised largely from the 2003 version of the New South Wales Department of Mineral Resources (NSWDMR) state digital geology dataset, comprising 1:250 000 to 1:100 000 scale mapping data. Some areas (denoted in the dataset metadata) have been recompiled from more recent mapping data sourced from NSWDMR. In other areas, such as the Broken Hill region and the Murray Basin region, 1:500 000 and 1:1 000 000 scale data was incorporated from published regional maps. Compilation of the seamless state dataset necessarily involved much edgematching of source datasets due to their varying ages and original compilation scales. Adjustment of some older geological datasets was made using geophysical data interpretation where particularly poor edgematching or spatial accuracy (± 1 km) was identified in source data.
Product Type
dataset
eCat Id
65529
Contact for the resource
Custodian
Owner
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GIS DatasetRegional
- ( Theme )
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- geology
- ( Theme )
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- mapping
- ( Theme )
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- regolith
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- AU-NSW
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2007-01-01T00:00:00
Creation Date
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Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
The various data sources for this dataset are detailed in the feature-level attribue metadata attached to the dataset. The dataset was generalised largely from the 2003 version of the New South Wales Department of Mineral Resources (NSWDMR) state digital geology dataset, comprising 1:250 000 to 1:100 000 scale mapping data. Some areas, particularly in the north-east of the state (eg: Moree, Inverell, Tamworth, Manilla) and central-west (eg: Goulburn, Lake Cargellico) were recompiled from more recent data sourced from NSWDMR in 2004-5. The basement geology of the Broken Hill region was compiled from 1996 1:500 000 scale data from the national, NSW and SA geological surveys. Much of the Murray Basin region was compiled from 1991 1:1 000 000 scale data from AGSO, upgraded in some parts from more recent 1:250,000 scale maps from the NSWDMR geodatabase. Compilation of the seamless state dataset necessarily involved much editing of original data along the edges (edgematching) of source datasets due to their varying ages and original compilation scales. Adjustment of some older geological data was made using geophysical data interpretation where particularly poor edgematching or spatial accuracy (± 1 km) was identified in the source data.
Parent Information
Extents
[-37.55, -25.9, 141.0, 171.75]
Reference System
Spatial Resolution
Service Information
Associations
Source Information
Source data not available.