Metamorphic Rocks (National Geoscience Dataset)

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

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Dataset citation

ANZLIC unique identifier: ANZCW0703002401

Title: Metamorphic Rocks (National Geoscience Dataset)

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Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia

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This map, first published by BMR in 1983, displays the distribution of metamorphic facies in Australia. The original map was compiled between 1972 and 1983 by T.G. Vallance, G.W. DAddario, A.J. Stewart, J.E. Mitchell, J.F. Stirzaker, and A.S.Mikolajczak using data supplied by BMR, State and Territory Geological Surveys,Universities and the Geological Society of Australia. As a digital data set the attributes have been revised to allow relational analysis of the data within.

Included is a GIF image file of the metamorphic grades legend for the dataset.

ANZLIC search words:

GEOSCIENCES
GEOSCIENCES Geology

Spatial domain:

locality map

Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia

Geographic extent polygon: 113 -11, 154 -11, 154 -44, 113 -44, 113 -11,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:: North bounding latitude: -11 °; South bounding latitude: -44 °; East bounding longitude: 154 °; West bounding longitude: 113 °

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Data currency

Beginning date: Not Known

Ending date: 1998-09-01

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Dataset status

Progress: Complete

Maintenance and update frequency: Not Known

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Access

Stored data format:: DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic WGS84

Available format type:: DIGITAL - dat Data file MapInfo Geographic WGS84; DIGITAL - shp ArcView shape file ArcView Geographic WGS84; DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic WGS84

Access constraints:

Free to download

Free Data Download

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Data quality

Lineage:

This map was produced by scanning and vectorising the published 1 : 5 000 000 Metamorhic Map of Australia (Bureau of Mineral Resources, Geology and Geophysics, Australia, 1983). This original digital version (1995) contained several coverages: geological boundaries and coastline, major faults and trends. In 1996, these individual coverages were re-projected to comply with the current national dataset projections and were combined into one dataset in which the linework and the polygons were fully attributed as per the original 1983 edition. The attributes of the dataset encompass all the map surrounds but have been subsequently revised and tailored to facilitate better use in the GIS environment. As such the major attribute of the dataset is the "rock_class" which can be used to distinguish metamorphic and igneous rocks. For metamorphic rocks the items fac_series and metagrade apply and for igneous the ig_class, era and lith_desc apply.

Positional accuracy:

Nominal Scale 1:5,000,000

Variable due to the variety of sources of the data.

Attribute accuracy:

Variable due to the various sources of the original information.

Logical Consistency:

A geoscientist visually inspected the finished dataset to make sure the attributes were accurate and the data were consistent spatially with current scientific information. Tests are also carried out on these data for data completeness, correct spatial representation, attribute accuracy, logical consistency and correctness, and where appropriate for compliance with Geoscience Australia's GIS data dictionary available at http://www.ga.gov.au/standards/datadict.html.

Completeness:

The dataset coverage is complete for the whole of continental Australia.

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