Australian Crustal Elements (National Geoscience Dataset)
Note : This dataset description is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.
Dataset citationANZLIC unique identifier: ANZCW0703002384
Title: Australian Crustal Elements (National Geoscience Dataset)
CustodianCustodian: Geoscience Australia
DescriptionAbstract: The Australian Crustal Elements dataset delineates upper crustal elements, primarily based on composite geophysical domains, each of which shows a distinctive pattern of magnetic and gravity anomalies. These elements generally relate to the basement, rather than the sedimentary basins.Boundaries between these elements are interpreted to mark crustal-scale changes in composition or structural pattern, or both. Where feasible, these boundaries are chosen to emphasise their correlation with the outcropping boundaries of geological provinces. The principles used to construct this map are based on the research, in Australia, by a large number of workers including Fraser et al. (1977), Wellman (1976a, 1976b, 1978), Tucker et al. (1979) and Mathur and Shaw (1982). Similar research overseas includes the work of Provodnikov (1975), Thomas et al. (1988) and Rivers (1989). In attempting to build the model for the tectonic framework of the continent, AGSO began by looking for coherence between gravity and magnetic domains to delineate composite geophysical domains. After analysing several portrayals of amalgamated magnetic and gravity data sets, compositional and structural province-scale boundaries were erected that correlate, where possible, with geological features. Such boundaries can then be extrapolated under the sedimentary basins. To give the map an added tectonic flavour, the domains were characterised according to their magnetic and gravity character, in a way that reflects the tectonic significance of their magnetic responses. Further information: Due to the complexity of this data set a Microsoft Word for Windows 95 document (crustel.doc) is also supplied for additional information to what is contained within this metadata. ANZLIC search words and