Showing results for: [ Munday, Tim ]
Regolith ASD and XRD data for the Capricorn case study project (RP04-063-M436)
SIEF Distal Footprints - Field Survey and XRD - Published 27 Aug 2020
GSWA Capricorn 2013 Reconnaissance AEM TEMPEST® survey
(GA Project 1265)
FINAL DATA RELEASE — 19 June 2014
The Capricorn 2013 AEM TEMPEST® survey, conducted as part of the Western Australia Explorati... moreon Incentive Scheme and managed by Geoscience Australia on behalf of the Geological Survey of Western Australia (GSWA), is a $2.5 million contribution to the Distal Footprints of Giant Ore Systems: UNCOVER Australia. The Capricorn 2013 AEM survey is Stage 1 of the WA Reconnaissance Airborne Electromagnetic Survey (WARAEM) 2013-20 National Geoscience Agreement project, designed to provide broad-acre, wide line-spacing, airborne electromagnetic (AEM) data over the approximately 70% of the area of Western Australia that is underlain by Precambrian rocks that occur at or within about 300 m of the surface. The Capricorn Orogen is a geologically complex area, the surface expression of which has a surface extent of approximately 240,000 square kilometres (approximately 9 per cent of the area of the State). It is prospective for potentially large discoveries of gold, copper, and other base metals.
The Capricorn 2013 AEM TEMPEST data release includes the final contractor supplied (Phase 1) datasets from the TEMPESTÂ® time domain AEM survey as well as a set of GSWA-produced imagery made from the data.
The data release package includes:
- Point-located, computed B-field EM time-series channel data in ASEG-GDF2 (ASCII) format (also TMI and terrain data)
- Point-located computed conductivity and terrain data in ASCII format
- Data multiplots (EM x- and z-component time series, CDI sections, TMI, altimeter and monitor channels) in PDF format
- CDI stacked sections in PDF format
- Gridded data: EM time constant (x- and z-components); selected conductivity-depth slices (in ER Mapper format, 1 km cell size)
- Geo-referenced images of gridded EM data in JP2 format
- Geo-referenced images of gridded TMI, Ternary Radiometrics, Bouger Gravity and DEM data in JP2 format
- Flight path map in ESRI shapefile format
- Survey operations report in PDF format
- Metadata and License filesless
SIEF Distal Footprints - Airborne Electromagnetics - Published 25 Aug 2020
Regolith Geochemistry - Capricorn case study project (RP04-063-M436)
SIEF Distal Footprints - Field Survey and XRD - Published 25 Aug 2020
Sulfur Isotope Data - Capricorn case study project (RP04-063-M436)
SIEF Distal Footprints - - Published 25 Aug 2020
Theme: Data assimilation and value of information, DEI-FSP
This data represents the results of a three day structural and sedimentological survey conducted south of the township of Kapunda in South Au... morestralia. The field work was performed to assist with the environmental impact assessment of the Copper recovery project planned at the Kapunda historical mining site.less
DEI-FSP Funded Labour - - Published 27 Jul 2020
Titanite geochronology and trace element chemistry across the Capricorn Orogen
SIEF Distal Footprints - Geochemical Analysis of Titanite - Published 24 Jun 2020
Rutile geochronology and trace element chemistry across the Capricorn Orogen
SIEF Distal Footprints - Geochemical Analysis of Rutile - Published 24 Jun 2020
The Capricorn hydrogeochemistry study builds on previous work in the Yilgarn Craton, creating a seamless dataset that covers much of Western Australia. This study has developed a provisional review of... more the mineral prospectivity of the region using groundwater geochemistry, defining areas of interest requiring further investigation.
In the Capricorn Orogen, groundwater samples were collected from 1035 wells and bores, in most cases the water table was within 20 m of the surface. Samples were also taken from known mineral deposits to provide examples of the geochemical signature associated with mineralisation in the region. Field measurements included pH, Eh, EC and temperature. Separate field prepared sub-samples were collected for cation, anion, alkalinity, and Au/PGE analysis. Robust statistical methods were applied to combine bailed and flowing samples using a derived contamination factor that is tailored to the individual measured parameters. Rescaling normal or log-normal data and the creation of indices for lithology discrimination, Au, U and sulfide mineralisation improved the utility of hydrogeochemical data. All samples were analysed for δ18O, δ2H and selected samples were analysed for δ34S and associated δ18O from SO42.
A number of different parameters can be used to indicate rock types from hydrogeochemical data even when there is deep weathering or transported cover. Higher dissolved concentrations of elements can indicate mafic (Cr, V) or granitic (U, F) rocks and ratios between elements (e.g. K excess, relative to Rb) can differentiate between granitic and sedimentary terrains. These determinations are improved by multi-element indices.
The work tests the utility of previously derived mineral exploration indices, and has resulted in the creation of new indices designed for the geology of the Capricorn Orogen. Hydrogeochemical exploration for Au using Au, Ag, As and combined element indices such as AuMin was able to delineate areas of known mineralisation and target new areas of interest. The FeS index developed in the north Yilgarn Craton did not prove to be very effective in the Capricorn Orogen, but the AcidS index has anomalism linked to most of the known deposits and provides new areas of interest. There are several areas in the Capricorn Orogen that have U concentrations greater than those in close proximity to known deposits in the north Yilgarn. Spatially, the carnotite saturation index predicts most of the known U prospects and provides new targets in the Capricorn Orogen.
The utility of groundwater as a sample medium able to ‘see through’ cover was tested in two case study regions. In the Bryah Basin, groundwater possesses the chemical signature of mafic rocks but due to the thickness of transported cover soil sample chemistry does not reflect the underlying lithologies. At the polymetallic Abra deposit groundwater possesses anomalous Pb and W concentrations related to the buried deposit, whilst soil samples are proven to be an ineffective at targeting mineralisation.
Oxygen and hydrogen isotopes highlight groundwater samples that have a composition suggestive of a water source other than meteoric water. This water source has mixed with meteoric water and may be linked to faults, mineralisation or hydrothermal alteration. Light δ34S values and associated light δ18O successfully identified mineralisation at Paulsens Au deposit and have the potential to target new areas of mineralisation.
This research further demonstrates the value of groundwater chemistry for defining lithology, hydrothermal alteration and mineralisation in areas with and without cover. Stable isotopes have been used systematically across the region to assist in delineating new areas of interest.less
SIEF Distal Footprints - Geochemical Analysis of Groundwater - Published 24 Jun 2020
This repository houses the raw data files for a 1.7 km long seismic reflection profile that was collected in 2018. The data are in seg2 format (Geometrics software) and some geometry files might need ... moreto be fixed. The data are organized in the order they were collected. Each roll has 48 channels. There is a text file in each directory that has the shot location and file name. Check the notes, but for the most part we collect 10 shots at each location. These files will need to be stacked together prior to using.less
Goyder Finding Long-term Outback Water Solutions: Stage-3 (G-Flows Stage-3) - - Published 14 Nov 2019
Opening up greenfields regions for minerals exploration programs is best facilitated through the understanding of regional minerals prospectivity. The Capricorn Orogen is a greenfields region, in whic... moreh a multicommodity mineral systems analysis has been completed forming the basis of prospectivity analyses and mapping data included in this collection. Known mineral occurrences or deposits in the region formed from between the Paleoproterozoic and Neoproterozoic. Mineralisation can in related to basin development and orogenesis in the region, related to periods of supercontinent assembly and breakup that were manifested in the region through the contractional 2005 – 1950 Ma Glenburgh, 1830 –1780 Ma Capricorn, and c. 900 Ma Edmundian orogenies. These periods were preceded, and interspersed with periods of extension that may have included the 1680–1620 Mangaroon Orogeny, and led to the development of volcanosedimentary and sedimentary basins throughout the region. Prospectivity models were generated for several commodity groups of various ages and ore genesis mechanisms within the region that include combinations of Ni, Cu, PGEs, V, Ti, Au, Pb, Zn, channel Fe and U. The work has found a link between key mineral systems and a spatial relationship between disparate styles of mineral deposits in the region. Crustal-scale tectonic architecture was analysed by allying a 2D map view geological-geophysical interpretation with 2.5D magnetic and gravity joint inversions of selected profiles, a 3D Moho gravity inversion (MoGGIE), and inferences derived from 2D and 3D magnetotellurics and 2D reflection seismic and 3D passive seismic experiment conducted in the region. This work clearly illustrates different ‘zones’ of the Capricorn Orogen are prospective for diverse commodity groups due to the tectonic environment in which they developed through time. Major crustal-scale faults or shear zones that intrinsically control the location of known ore deposits in the area, are implied to be sites of fluid migration and proximal to sites of ore deposition. Of these, some are considered to be Archean in their origin, whereas others are thought to have developed during the early Paleoproterozoic and been re-activated through time, influence the formation of basins over them and perhaps the formation of ore deposits.less
SIEF Distal Footprints - Mineral Systems Analysis - Published 02 Aug 2019
Airborne electromagnetic surveys undertaken in the Musgraves Province in South Australia Queensland, Australia. The surveys were flown between the 18th August 2016 and 14th October 2016.
As ... morepart of the Goyder Institutes Facilitating Long-Term Outback Water Solutions Stage 3 (G-FLOWS 3) two airborne electromagnetic (AEM) surveys were flown to assist in a regional groundwater resources assessment in an otherwise data poor area.
For the AEM data acquisition, two different AEM surveys were planned with a relatively wide line spacing of 2km, wide enough to cover a large region, whilst being close enough to provide useful information about the variability of cover, including the location and geometry of the major palaeovalley systems known to be present in the area. Both surveys were flown with a line spacing of 2km in a north-south direction. The western survey was flown with the TEMPEST high moment (HM) system, and the eastern part with the SkyTEM312FAST system. Both systems are time domain AEM systems, one being of a fixed wing configuration (TEMPEST), the other being helicopter borne (SkyTEM). less
Goyder Finding Long-term Outback Water Solutions: Stage-3 (G-Flows Stage-3) - - Published 18 Jun 2019
Supplementary data from CRC LEME open file report 94.
Legacy data - CRC LEME Open File Report Series - Published 25 Sep 2018
AutoIsocon is a standalone application for the rapid construction and comparison of isocon diagrams and mass balance calculations in metasomatic systems. This collection contains the applications for ... more64-bit Windows and Mac OS systems, together with a user guide and an example data set.less
SIEF Distal Footprints - Geochemical analysis software - Published 28 Jun 2017
Derived hydrogeology dataset of the Eyre Peninsula region in South Australia
1212.3 Goyder 1.2.2 FLOWS 2 - Hydrogeology Framework Model - Published 21 Aug 2015
Flight lines of a helicopter electromagnetic survey undertaken in the Flinders River catchment of Northern Queensland, Australia. The survey was flown between the 26th November 2012 and 12th December ... more2012. The dataset contains Electrical Conductivity values (mS/m) at depth intervals between 0 and 225m.less
1211.1 Gulf Agricultural Resource Assess - AEM Survey - Published 31 Mar 2014
1211.1 Gulf Agricultural Resource Assess - AEM Survey - Published 21 Mar 2014
Chemistry analysis results of the sampled bores in the Musgrave province, South Australia
Goyder Flows Project - Chemistry analysis - Published 21 Mar 2014
Derived hydrogeology dataset of the Musgrave Block in South Australia.
Goyder Flows Project - Digitising - Published 10 Aug 2013