Geotechnical Landscape Map of Australia (National Geoscience Dataset)  

Authors / CoAuthors

Grant, K. | Davis, J.R. | de Visser, C.

Abstract

A geotechnical landscape map of Australia has been drawn depicting regions of constant [geological and physical] (NOT geophysical {Ed}) properties for road construction. The map, drawn at a scale of 1:2 500 000 for clarity, has a true accuracy of a 1:5 000 000 scale map, and is based on the four variables - landform, underlying lithology, soil type and [surficial] lithology - which are the principal [geological and physical] determinants for road construction. The origins and interpretation of the source maps together with a description of the legend of the geotechnical landscape map are described in this Report. Precis {Ed}: A map delineating regions with differing geotechical properties with particular application to road construction.

Product Type

dataset

eCat Id

34855

Contact for the resource

Keywords

• GIS DatasetNational

( Theme )

• GIS

( Theme )

• geology

( Theme )

• landforms

( Theme )

• marine

• AU

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_Internal

Publication Date

1984-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - restricted

Use - license

Status

Purpose

Maintenance Information

notPlanned

Topic Category

geoscientificInformation

Series Information

Lineage

The map was compiled using many sources, such as topographical, geological and soil maps of Australia drawn at various scales, and aerial photographs (again at various scales) of many parts of Australia; some information was derived from the personal knowledge of two of the authors (K.G. and C. de V.) and of colleagues in a number of Divisions of CSIRO and other Australian government institutions. After a preliminary map was prepared, it was found that there was insufficient information available about road building costs in the more remote areas of Australia on which to base a realistic prediction because few, if any, roads had been constructed at that time in those areas. The attempt, therefore, was postponed until such information became available. In the ensuing two decades, many roads were constructed in the more remote areas, either under the Beef or State Roads Programs, to the point where sufficient information became available to make possible a realistic prediction of road building costs in most parts of the continent. Consequently the preliminary Geotechnical Landscape Map of Australia has been revised in the light of this later information. The original printers' blackline separations were scanned, converted to vectors, edited to form polygons, joined to a single coverage and attributed by NRIC. In revision the new dataset was made compatible with the Relief and Landform Map of Australia (Loffler and Ruxton 1969) (scale 1:5 000 000), the Geological Map of Australia (Department of National Development 1966) (scale 1:6 000 000) and the Soil Map of Australia (Stace et al. 1968) (scale 1:10 000 000) and re-drawn at a scale of 1:5 000 000. Because many of the mapping units on the map are small and the legend key is extensive, the map is published at a scale of 1:2 500 000. The accuracy remains, however, that of a map of scale 1:5 000 000.

Parent Information

Extents

[-44.0, -11.0, 113.0, 154.0]

Reference System

Spatial Resolution

Service Information

Associations

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Source Information

Source data not available.