Coonawarra. Progress report to licence expiry/full surrender for the period 27/8/1970 to 26/8/1971.
Published: 09 Dec 1970 Created: 28 Oct 2024 Revised: 17 Dec 2024

A large, >23 mGal positive regional gravity centred approximately 6 miles south-southeast of Naracoorte township has been explored for its metallic mineral potential by conducting soil mercury sampling, ground magnetic traverses, a detailed...

A large, >23 mGal positive regional gravity centred approximately 6 miles south-southeast of Naracoorte township has been explored for its metallic mineral potential by conducting soil mercury sampling, ground magnetic traverses, a detailed airborne magnetic survey, and follow-up detailed soil mercury sampling over identified discrete aeromagnetic anomalies. The ground magnetic data appeared to indicate that an extensive low order magnetically anomalous zone coincided with the gravity anomaly, but this assumption was later disproved by the results of the airborne magnetic survey flown over an 18 square mile grid, which showed that the ground traverses had inadvertently followed along narrow magnetic highs which are now believed to arise from a folded rock horizon. A single detailed mercury sampling traverse with samples taken at 200 foot intervals was laid out across three minor magnetic highs revealed by the aeromagnetic survey. The assay results were not sufficiently encouraging for North to want to proceed with drilling at any of these locations.

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About this record

Record No mesac2662
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor
Sponsor
Tenement SML 459
Tenement Holder North Broken Hill Ltd
Operator
Geological Province Otway Basin
Mine Name
Stratigraphy
Commodity
Notes
Notes: See also related exploration reports for North's contemporary SMLs 287 and 288 covering ground to the north of the subject licence, which are held in Envs 1151 and 1153 respectively.
Geographic Locality: Upper...

Notes: See also related exploration reports for North's contemporary SMLs 287 and 288 covering ground to the north of the subject licence, which are held in Envs 1151 and 1153 respectively. Geographic Locality: Upper South-East;Coonawarra;Struan;Naracoorte Range Doc No: Env 01488

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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/mesac2662
Citation Lynch, J.E. 1970. Coonawarra. Progress report to licence expiry/full surrender for the period 27/8/1970 to 26/8/1971. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac2662

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[140.501384,-37.331854],[140.965752,-37.331854],[140.965752,-36.998514],[140.501384,-36.998514],[140.501384,-37.331854]]]}
Purpose

                    
                    

                    
                  
Lineage