groundwater
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In this study, two hyperspectral instruments were used on sonic-cored drillhole materials to assess the value of hyperspectral methods for hydrogeological investigations: (1) the Hylogger core scanner; and (2) the Portable Infrared Mineral Analyser (PIMA). The hylogger provides continuous coverage down the logged sonic cores in the visible to near-infrared (VNIR), short wavelength infrared (SWIR), and thermal infrared (TIR) bands. The PIMA is used on individual samples, and was used to cross-check SWIR results from the Hylogger. Further validation of the methods was carried out using XRD analysis of selected samples. The hylogging method successfully mapped the distribution of clays and oxides in both the aquitards and aquifers. The Coonambidgal Formation shallow aquifer is dominated by montmorillonite, and the Menindee Formation and Blanchetown Clay aquitard by kaolinite with lesser montmorillonite. Clay mineralogy in the Calivil Formation was strongly controlled by sedimentary facies, with muddy units predominantly kaolinite, with lesser nontronite, and clays in sandy units either kaolinite-dominant or smectite-dominant. The two clay mineral associations were also found to correlate with different hydraulic conductivity trends in the Nuclear Magnetic Resonance logging of the aquifer. The underlying Renmark Group contained mixed kaolinite and smectite. Mapping of oxide species (and Munsell colours) was also informative in terms of mapping overprinting redox zones, with goethite found to be ubiquitous in all formations. Haematite was however, detected only locally in the Calivil Formation and Renmark Group. Overall, we conclude that hyperspectral logging of drillcore is a powerful tool for use in detailed hydrogeological investigations.
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Legacy product - no abstract available
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This Geocat record is a CD of presentations delivered as part of the 4th Technical Advisory Group workshop for the Palaeovalley Groundwater Project. The workshop was held in Canberra at Geoscience Australia on 5 and 6 April 2011 and involved ~20 people including GA staff and invited guests from state government water resource and geological survey organisations in SA, NT and WA. The CD has been compiled as a record of the workshop and will be delivered to the workshop participants as a record of the event.
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Legacy product - no abstract available
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Legacy product - no abstract available
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Poster describing how GA made the WASANT palaeovalley map (GEOCAT #73980).
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Legacy product - no abstract available
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The purpose of this Record is to document the written material issued at the Groundwater School held 29 March - 9 April 1965 in Adelaide. Record 1965/85 deals with the organisation, syllabus, and general scope of the School and it is not necessary to repeat these aspects in this record. The material is issued in two parts: Part 1: Hydrogeology, Geophysics, Hydraulics, and Pumping Tests. Part 2: Drilling, Bore Construction, Chemistry of Groundwater, Utilisation. No attempt was made to edit the material which was written by the lecturer in most cases as lecture notes and not for publication.
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Legacy product - no abstract available
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Legacy product - no abstract available