Pernatty Lagoon. Progress reports and final report to licence full surrender, for the period 5/9/1974 to 7/7/1975.

Created: 28 Oct 2024 Revised: 18 Dec 2024

Author: Kennedy, H.D.;Cowan, B.M.;Irvine, J.L.

Base metal exploration in an area lying immediately to the east of Pernatty Lagoon targeted stratiform deposits within Late Proterozoic metasediments, seeking shallowly-occurring favourable stratigraphic facies associations based on the Zambian Copperbelt model. A qualitative and quantitative interpretation of aeromagnetic data revealed a complex basement structure that appeared to be related to known mineralisation in the region, and which offered potential for finding mineralised sabkha - type beds pinching out on the flanks of basement highs. Twelve widely-spaced vertical rotary/percussion holes totalling 570 m were drilled in May 1975 in the western and southern parts of the licence area to test the prospective Whyalla Sandstone - Pandurra Formation interface, but all of the drillholes failed to penetrate to this objective, or to intersect anomalous base metals. It was concluded that any possible Mount Gunson style mineralisation existing in this portion of the Stuart Shelf would be at too great a depth to mine by economical open cut methods, and so the ground was surrendered.

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About this record

Record No	mesac1285
Topic	Geoscientific Information
Type of Resource	Document
Category Type	Basement Geology Drilling Engineering Earth Sciences Electrical And Electromagnetic Methods In Geophysics Engineering Exploration Geochemistry Geochemistry Geology Geomatic Engineering Geophysics Gravity Historical Geology Magnetics Mineral Exploration Mineral Resource Geology Mineral System Geology Petroleum System Geology Policy And Administration Primary Mining And Extraction Of Mineral Resources Regional Geology Resource Geology Resources Engineering Sedimentology Stratigraphy
Document Type	Mineral Company Report - Mineral Exploration
Contributor
Sponsor	Otter Exploration NL
Tenement	EL 154
Tenement Holder	Otter Exploration NL
Operator
Geological Province	Gawler Craton Stuart Shelf
Mine Name
Stratigraphy	Pandurra Formation Tent Hill Formation Tregolana Shale Member Whyalla Sandstone Woocalla Dolomite Member
Commodity	carbonaceous material
Notes	Notes: Includes: - Irvine, J.L., 1974. An aeromagnetic interpretation of the Pernatty - Windabout area, SA (geophysical consultant's report for Otter Exploration). Appendix 1 of EL 154 final surrender report. 8 fig. See also previous... Notes: Includes: - Irvine, J.L., 1974. An aeromagnetic interpretation of the Pernatty - Windabout area, SA (geophysical consultant's report for Otter Exploration). Appendix 1 of EL 154 final surrender report. 8 fig. See also previous exploration data for SML 315 referred to herein (held in Env 1230). Geographic Locality: Mount Gunson;Pernatty Lagoon;Lake Windabout;Pond Dam;Cattleyard Dam;Pernatty Creek;"Old Pernatty" ruins;Whitata Homestead Doc No: Env 02484 Drillhole: OEP1 - OEP12;(139560);(139721 - 139731) Drillhole Unit No: 6334 00083;6334 00147;THROUGH;6334 00155;6335 00136;6335 00137 More +
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/mesac1285
Citation	Kennedy, H.D.;Cowan, B.M.;Irvine, J.L. Pernatty Lagoon. Progress reports and final report to licence full surrender, for the period 5/9/1974 to 7/7/1975. Mineral Company Report - Mineral Exploration https://pid.sarig.sa.gov.au/document/mesac1285

Technical information

Status
Maintenance and Update Frequency
Geographic Reference	GDA2020 (EPSG:7844)
Geo bounding box	{"type":"Polygon","coordinates":[[[137.301338,-31.748524],[137.601337,-31.748524],[137.601337,-31.448522],[137.301338,-31.448522],[137.301338,-31.748524]]]}
Purpose
Lineage