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RB 69/00046 South Eastern Freeway geological investigations. Progress report number 4. Bridgewater-Verdun section, STA 290 to STA 448, Hundreds Onkaparinga, Noarlunga.
Published: 11 Aug 1969 Created: 05 Nov 2024 Revised: 05 Nov 2024
Author: Fryar, J.H.

The Bridgewater-Verdun Section of the South Eastern Freeway is 15 800 ft. long, of which 8,500 ft. will be in cut, and the remainder will be mainly on fill. The maximum depth of cut is about 70 ft. (on the centre line). Investigations have...

The Bridgewater-Verdun Section of the South Eastern Freeway is 15 800 ft. long, of which 8,500 ft. will be in cut, and the remainder will be mainly on fill. The maximum depth of cut is about 70 ft. (on the centre line). Investigations have consisted of geological mapping, trenching and seismic refraction surveys. Rocks exposed along the route are mainly sandstone (Aldgate Sandstone) and phyllite of the Torrensian Series. Bedding and main cleavage and joint directions strike about northeast-southwest (that is, roughly normal to the freeway) and dip southeast. Several folds and minor flexures have been observed. It is considered that most of the rocks could be excavated by ripping with some blasting of stronger rocks, likely to be encountered towards the floor of the deeper cuttings. Batters of mainly 1:1 with some steeper angles in less weathered, stronger rocks, are suggested.

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About this record

Record No rb6900046
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Departmental Publication - Hydrogeological Publication
Contributor South Australia. Department of Mines
Sponsor South Australian Highways Department
Tenement
Tenement Holder
Operator
Geological Province
    Mine Name
    Stratigraphy Aldgate Sandstone
    Commodity
      Notes 
      Notes: 65/01219
Geographic Locality: South-East Freeway;Bridgewater;Verdun;Hd Onkaparinga;Hd Noarlunga
Doc No: RB 69/00046
      Notes: 65/01219
Geographic Locality: South-East Freeway;Bridgewater;Verdun;Hd Onkaparinga;Hd Noarlunga
Doc No: RB 69/00046
      Language English
      Metadata Standard ISO 19115-3

      Citations

      Use constraints License
      License Creative Commons Attribution 4.0
      Persistent identifier https://pid.sarig.sa.gov.au/document/rb6900046
      Citation Fryar, J.H. 1969. RB 69/00046 South Eastern Freeway geological investigations. Progress report number 4. Bridgewater-Verdun section, STA 290 to STA 448, Hundreds Onkaparinga, Noarlunga. Departmental Publication - Hydrogeological Publication. Government of South Australia.
      https://pid.sarig.sa.gov.au/document/rb6900046

      Technical information

      Status
      Maintenance and Update Frequency
      Geographic Reference GDA2020 (EPSG:7844)
      Geo bounding box {"type":"Polygon","coordinates":[[[138.5,-35.5],[139,-35.5],[139,-35],[138.5,-35],[138.5,-35.5]]]}
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