This service has been created specifically for display in the National Map and the chosen symbology may not suit other mapping applications. The Australian Topographic web map service is seamless national dataset coverage for the whole of Australia. These data are best suited to graphical applications. These data may vary greatly in quality depending on the method of capture and digitising specifications in place at the time of capture. The web map service portrays detailed graphic representation of features that appear on the Earth's surface. These features include the administration boundaries from the Geoscience Australia 250K Topographic Data, including state forest and reserves.

Geoscience Australia carried out a marine survey on Carnarvon shelf (WA) in 2008 (SOL4769) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Australian Institute of Marine Science (AIMS) Research Vessel Solander. Bathymetric mapping, sampling and video transects were completed in three survey areas that extended seaward from Ningaloo Reef to the shelf edge, including: Mandu Creek (80 sq km); Point Cloates (281 sq km), and; Gnaraloo (321 sq km). Additional bathymetric mapping (but no sampling or video) was completed between Mandu creek and Point Cloates, covering 277 sq km and north of Mandu Creek, covering 79 sq km. Two oceanographic moorings were deployed in the Point Cloates survey area. The survey also mapped and sampled an area to the northeast of the Muiron Islands covering 52 sq km. cloates_3m is an ArcINFO grid of Point Cloates of Carnarvon Shelf survey area produced from the processed EM3002 bathymetry data using the CARIS HIPS and SIPS software

The Historical Bushfire Boundaries service represents the aggregation of jurisdictional supplied burnt areas polygons stemming from the early 1900's through to 2022 (excluding the Northern Territory). The burnt area data represents curated jurisdictional owned polygons of both bushfires and prescribed (planned) burns. To ensure the dataset adhered to the nationally approved and agreed data dictionary for fire history Geoscience Australia had to modify some of the attributes presented. The information provided within this service is reflective only of data supplied by participating authoritative agencies and may or may not represent all fire history within a state.

Fluid escape features and their correlation with subsurface geology have been studied in the Capel and Faust basins, offshore Eastern Australia, as part of the petroleum prospectivity assessment of these frontier basins. New high resolution 2D seismic, gravity, magnetic and multibeam bathymetry data significantly improved the geological understanding of the area through imaging of the deeper structure of sedimentary depocentres and exposure of a wide range of seafloor features. Integration of seafloor features identified on multibeam bathymetry data with subsurface fluid flow pathways interpreted from seismic data provides insights into the nature of fluid flow mechanisms and seal integrity in the Capel and Faust basins. Seafloor features identified include mega-pockmarks, polygonal faults, buried mud-volcanoes, forced-folds above saucer-shape sills, and slope failures with associated debrites along basement bounding faults. The correlation between the distributions of modern bathymetric features and subsurface fluid flow pathways indicate that fluid flow has been mainly driven by Cenozoic igneous activity. The magmatism and fluid flow activity have implications for petroleum prospectivity. Ongoing magmatism, fluid flow and fault reactivation during the Cenozoic adds to the risk of hydrocarbon charge relative to regional seal formation and structure emplacement. Hydrocarbon accumulations that may have formed within the deeper syn-rift and the pre-rift sections are less likely to have been affected by the Cenozoic magmatic and fluid flow processes and, therefore, may represent lower-risk exploration targets.

No abstract available

Geoscience Australia has recently completed a marine survey in the offshore northern Perth Basin, off Western Australia (Jones et al., 2011b; Jones, 2011c, Upton and Jones, 2011). One of the principal aims of the survey was the collection of evidence for natural hydrocarbon seepage. The survey formed part of a regional reassessment of the basin's petroleum prospectivity in support of frontier exploration acreage Release Area W11-18. This reassessment was initiated under the Australian Government's Offshore Energy Security Program and formed part of Geoscience Australia's continuing efforts to identify a new offshore petroleum province. The offshore northern Perth Basin was identified as a basin with new frontier opportunities. New data demonstrated that proven onshore-nearshore petroleum system is also effective and widespread in the offshore (Jones et al., 2011a). Evidence for a Jurassic petroleum system was also demonstrated in the Release Area W11-18 (Jones et al., 2011a). The marine survey results provide additional support for the presence of an active petroleum system in the northern Perth Basin.

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

A regional assessment of the Petrel Sub-basin has identified Mesozoic formations highly prospective for CO2 storage. The CO2 storage play comprises the Lower to Middle Jurassic Plover Formation and Lower Cretaceous Sandpiper Sandstone reservoirs, which are sealed by the Late Jurassic Frigate Formation and Cretaceous Bathurst Island Group respectively; the latter forming the regional seal.   The study comprised a sequence stratigraphic approach through the integration of biostratigraphic, well log and seismic data to produce a new stratigraphic framework. Lithological, laboratory, petrophysical and seismic data were utilised to identify facies, with a focus on reservoir quality and sealing capacity for geosequestration. It was concluded that the reservoirs were generally good quality and across the basin overall there were effective seals. A series of palaeogeographic maps summarise this geological and geophysical data, which was utilised for geological models and 3D dynamic simulation models. A fault study and geological modelling indicate that major faults do not affect the containment prospects of the total storage play; this conclusion can also be applied to salt diapirism.   This multi-disciplinary geological assessment has identified several CO2 storage prospects due to their good reservoir and sealing potential, which will be described in this presentation.