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dc.contributor.authorPedersen, CPen_US
dc.date.accessioned2013-10-23T04:23:36Z-
dc.date.issued1974en_US
dc.identifier.govdocCR1974-0037en_US
dc.identifier.urihttps://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/60336en_US
dc.description.abstractThe main aim of the 1973 field programme was to delineate the most prospective areas for retention when reductions were required at year's end. It was therefore planned to continue regional geological mapping, supplementing surface data by auger drilling. Increasing knowledge of the geology of the new uranium discoveries in the Alligator Rivers region had suggested that rocks near the margins of the Nanambu Complex, particularly a lithological unit currently termed 'Koolpin Equivalent' by BMR geologists, are favourable host rocks for uranium mineralisation. Efforts were therefore made to identify these and trace them along strike. Extensive geochemical sampling of stream sediments and auger cuttings was carried out in conjunction with the geological work. One anomaly, Anomaly 95, not previously examined in detail was mapped and evaluated by auger and percussion drilling. Late in the season an airborne radiometric and magnetic survey was flown over an area of approximately ninety square miles in the eastern part of the Exploration Licence. The survey was flown at a flight line spacing of about one thousand feet utilising more sophisticated radiometric equipment than had been available for previous surveys. This survey covered Nanambu Complex margins, previously indicated by auger drilling. Conclusions - Prospecting in Exploration Licence 281 during 1973 failed to locate any economic mineralisation. Geological and radiometric investigations, however, have outlined a potentially uranium-bearing zone within the Koolpin Equivalent rocks close to the Nanambu Complex contact. The Koolpin Formation rocks which outcrop in the western part of the Exploration Licence may also be a favourable host for uranium mineralisation.en_US
dc.subject.classificationUraniumen_US
dc.subject.classificationZincen_US
dc.subject.classificationCopper explorationen_US
dc.subject.classificationLeaden_US
dc.subject.classificationGold explorationen_US
dc.subject.classificationNickelen_US
dc.subject.classificationStream sediment samplingen_US
dc.subject.classificationRock chip samplingen_US
dc.subject.classificationAerial magnetic surveysen_US
dc.subject.classificationAerial radiometric surveyen_US
dc.subject.classificationScintillometersen_US
dc.subject.classificationAuger drillingen_US
dc.titleReport on 1973 investigations EL 281 Nourlangie and Goanna Creeken_US
dc.relation.isatmap100Cahill 5472en_US
dc.relation.isatmap250Alligator River SD5301en_US
dc.relation.isatgeolprovincePine Creek Orogenen_US
dc.description.stratnameKoolpin Formationen_US
dc.description.stratnameNanambu Complexen_US
dc.description.stratnameMount Partridge Groupen_US
dc.description.stratnameKombolgie Formationen_US
dc.description.stratnameZamu Doleriteen_US
dc.description.geochemicalsamplingStream sediment sampling 200 mesh for uranium, copper, lead & zinc.13 stream sediment samples were collected and assayed for gold. 42 rock chip samples were collected and analysed or uranium & base metals.en_US
dc.description.drillingEighty three auger holes totalling 1, 923 feet were drilled at 1,000 feet and 500 feet intervals. Percussion drilling was carried out in November 1973 comprising a footage of 2,400 feet in 12 drill holes.en_US
dc.description.mineprospectnameAnomaly 95en_US
dc.description.mineprospectnameGoanna Creeken_US
dc.description.mineprospectnameGoanna Creek Southen_US
dc.description.mineprospectnameGoanna Creek Easten_US
dc.description.mineprospectnameGoanna Creek Centralen_US
dc.description.mineprospectnameNourlangie Junction South Groupen_US
dc.description.mineprospectnameNourlangie Junction East Groupen_US
dc.identifier.tenureEL281en_US
dc.description.modifyhistory12/01/2009en_US
dc.description.modifyhistory01/12/2015en_US
dc.description.modifyhistory14/06/2016en_US
dc.description.modifyhistory04/09/2023en_US
dc.contributor.holderNoranda Australiaen_US
dc.identifier.collectionnameMinerals Exploration Reports (MEX)en_US
dc.identifier.govdocprefixCR1974en_US
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Appears in Collections:Minerals Exploration Reports (MEX)

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