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Report on a detailed gravity survey over the Mount Salt, Mount Schank, Summer Hill and Tantanoola areas of the Gambier Sunklands, South Australia.
Published: 01 Jan 1957 Created: 13 Nov 2024 Revised: 15 Dec 2024
Author: Richards, K.A.

Describes instrument, techniques, practical difficulties encountered, and correction factors used. Interpretation as follows: (1) Mount Salt - Mount Schank Survey. Little agreement with OMara's surface geology. Dixon's structural features do not...

Describes instrument, techniques, practical difficulties encountered, and correction factors used. Interpretation as follows: (1) Mount Salt - Mount Schank Survey. Little agreement with OMara's surface geology. Dixon's structural features do not show up on gravity map. Sediment cover could thin to south. Hypothetical depths to Knight Group - Jurassic boundary are 2,300 - 5,000'. (2) Summer Hill Survey. Summer Hill Anticline (Dixon) does not appear to extend below Gambier Limestone. Gravity work confirms Nelson Fault (again higher gravity values on downthrown side based on surface geology). (3) Tantanoola Survey. Supports evidence of an E dip and small fault (but this has higher gravity values on downthrown side). Slight support for anticline. Conclusions: Gambier Limestone structures cannot be relied on to continue at depth. Faults dominate structure rather than folds. Evidence favours reverse faulting, possibly with reversal of plunge at depth. Seismic work is recommended.

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About this record

Record No mesac33632
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Geophysical Report - Final
Contributor
Sponsor
Tenement OEL 9
Tenement Holder Frome Broken Hill Co. Pty Ltd
Operator Frome Broken Hill Co. Pty Ltd
Geological Province Otway Basin
Mine Name
Stratigraphy
Commodity
    Notes 
    Notes: Company report no. 7200-p-5.
Geographic Locality: Mount Schank;Tantanoola;Summer Hill
Doc No: Env 00037
Drillhole: Mount Salt 1
    Notes: Company report no. 7200-p-5.
Geographic Locality: Mount Schank;Tantanoola;Summer Hill
Doc No: Env 00037
Drillhole: Mount Salt 1
    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/mesac33632
    Citation Richards, K.A. 1957. Report on a detailed gravity survey over the Mount Salt, Mount Schank, Summer Hill and Tantanoola areas of the Gambier Sunklands, South Australia. Geophysical Report - Final
    https://pid.sarig.sa.gov.au/document/mesac33632

    Technical information

    Status
    Maintenance and Update Frequency
    Geographic Reference GDA2020 (EPSG:7844)
    Geo bounding box {"type":"Polygon","coordinates":[[[140,-38.5],[141,-38.5],[141,-37.5],[140,-37.5],[140,-38.5]]]}
    Purpose 
    
                    
                    
    
                    
                      		
                
    
              
                
                
    
                  
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