From 1 - 10 / 645
  • This USB has been produced for promotional puposes and will be handed out (free) at domestic and international conferences. The USB contains a selection of reports, flyers, maps and data. Products are grouped into 4 categories: Records and Brochures, Mineral Deposits, Geophysical Data and Surface Geology.

  • Seismic hazard map of Papua New Guinea

  • The geology of the southern Thomson Orogen is poorly understood due to extensive cover of Mesozoic and Cenozoic sedimentary basins and regolith. Small outcrops of the southern Thomson Orogen are exposed along the Eulo Ridge (south Qld) and in the southwest near Tibooburra (NSW). Cover is of varying thickness and overlies a pre-Cretaceous-age palaeotopography with much greater relief than the present-day landscape. Proximal to these regions the thickness of cover is estimated to be < 200 m, which is within current economic exploration and mining depths. The southern Thomson Orogen is true 'greenfields' country. Although the mineral potential of the region is largely unknown, the north-eastern Thomson Orogen is well mineralised (e.g., Thalanga and Charters Towers), as is the Koonenberry region to the southwest (e.g., Tibooburra and Milparinka) and the Lachlan Orogen to the south (e.g., Cadia and Cobar). In order to encourage exploration investment in the southern Thomson Orogen, Geoscience Australia (GA), the Geological Survey of Queensland (GSQ) and the Geological Survey of New South Wales (GSNSW) have commenced a three-year collaborative project (the Southern Thomson Orogen Project - STOP) to synthesise existing and collect new pre-competitive geoscience data. The first stage of the project has synthesised existing geology and geophysics (magnetic, gravity and seismic data) to produce a new, seamless solid geological map of the Paleozoic basement across the state border. This is supported by the collection of new isotopic age dating samples from industry drill holes in the region to assess magmatic, metamorphic and mineralisation ages. These new samples will also be used to assess the potential mineral systems present in the southern Thomson Orogen, the prospectivity of the region and to conduct a gap analysis. Secondly, new surface geochemical samples have been collected over the Eulo Ridge to complement other low sampling density samples collected by the Cooperative Research Centre for Landscape Environments and Mineral Exploration (CRC LEME) and as part of the National Geochemical Survey of Australia (NGSA). Early results from these samples highlight the use of surface samples and weak acid digestion to map the distal dispersion footprints of large mineralisation systems and bedrock terrains. The third stage of the project is to collect new geophysical data across the region to assess the depth of cover over the Eulo Ridge and to map lithospheric architecture. This involves collecting new airborne electromagnetic (AEM), gravity and magnetotelluric (MT) data. To date, 4267 line kilometres of new AEM data have been collected in the area. Over the Eulo Ridge, 3352 line kilometres was collected as a regional survey with east-west flight lines of 5000 m line spacing. This survey was designed to map the basement-cover interface across the Eulo Ridge, map basement geological units and potentially locate conductive targets in the basement. Two AEM traverses were also collected: from Gongolgon (NSW) to Thargomindah (Qld); and from Louth (NSW) to Eulo (Qld), of 915 total line kilometres. These two traverses are complemented by the acquisition of ~3550 new gravity stations at 333 m station spacing and ~200 new broadband MT stations at 5 km station spacing (in progress November - December 2014). The combined AEM, gravity and MT datasets will be used to model the lithospheric architecture of the southern Thomson Orogen and to reassess the Thomson Orogen-Lachlan Orogen boundary. A program of detailed audio frequency MT (AMT) acquisition is also underway to map geological structures across the Eulo Ridge in Queensland. The combined results will be synthesised and integrated into a precompetitive geoscience data package to encourage exploration investment. Interim products and datasets will be released throughout the project, with the final results delivered to industry in 2016.

  • This USB has been produced for promotional puposes and will be handed out (free) at domestic and international conferences. The USB contains a selection of reports, flyers, maps and data. Products are grouped into 4 categories: Records and Brochures, Mineral Deposits, Geophysical Data and Surface Geology.

  • In 2011, as part of National Carbon Infrastructure Plan, the offshore Vlaming Sub-basin in the southern part of the Perth Basin was identified for a detailed study of the CO2 storage potential. During the two year study undertaken by Geoscience Australia new datasets were collected and a range of methodologies and screening techniques were applied to achieve an improved prospectivity assessment of this basin. The new datasets used in the study included biostratigraphy, swath bathymetry, geochemical data and petrophysical results from the core analysis. An integrated approach to acquiring and analysing datasets in the data poor Vlaming Sub-basin helped to develop a better understanding of the reservoir and seal properties, achieve a more accurate estimate of the CO2 storage capacity and select potential storage sites.

  • That knowledge forms an important element of disaster risk reduction is undisputed. Understanding risk and knowing how to better prepare for and mitigate disasters is critical to protecting lives and livelihoods. But does knowledge translate into practice at the community level? Through a series of post-disaster programs in West Sumatra, Indonesia, the Australia-Indonesia Facility for Disaster Reduction (AIFDR) set out to explore this question. Following the implementation of a unique engineering survey directly after the 2009 West Sumatra earthquake, AIFDR supported an innovative public awareness campaign to encourage affected communities to build back better. The campaign engaged Indonesian celebrities and delivered multi-media messages through entertaining and informative formats. A comprehensive evaluation of the Build Back Better campaign found that knowledge had importantly reduced community resistance to change. Despite this, house owners were not moved to action and a significantly low number of people actually used their new knowledge to rebuild homes using earthquake safe construction techniques. Based on the learning that knowledge was not enough, AIFDR designed and implemented a research program to explore the motivations for behaviour change. The findings of this research raise important considerations for governments, donors and program implementers seeking improved DRR outcomes throughout the disaster cycle.

  • A review of mineral exploration trends, activities and discoveries in Australia in 2013.

  • The Australian Geoscience Data Cube (AG-DC) Display Poster explains the key concepts of the AG-DC including the use of high performance comuting to analyse data efficiently across time and space by dicing images along a regular set of geographic 1 degree by 1 degree grid-lines to produce tiles which are then stacked according to time.

  • This report outlines the high precision level survey completed between the SEAFRAME tide gauge and continuous GNSS station in Majuro, Marshall Islands from 12-18 June 2012.