This web service delivers metadata for onshore active and passive seismic surveys conducted across the Australian continent by Geoscience Australia and its collaborative partners. For active seismic this metadata includes survey header data, line location and positional information, and the energy source type and parameters used to acquire the seismic line data. For passive seismic this metadata includes information about station name and location, start and end dates, operators and instruments. The metadata are maintained in Geoscience Australia's onshore active seismic and passive seismic database, which is being added to as new surveys are undertaken. Links to datasets, reports and other publications for the seismic surveys are provided in the metadata.

The Layered Geology of Australia web map service is a seamless national coverage of Australia’s surface and subsurface geology. Geology concealed under younger cover units are mapped by effectively removing the overlying stratigraphy (Liu et al., 2015). This dataset is a layered product and comprises five chronostratigraphic time slices: Cenozoic, Mesozoic, Paleozoic, Neoproterozoic, and Pre-Neoproterozoic. As an example, the Mesozoic time slice (or layer) shows Mesozoic age geology that would be present if all Cenozoic units were removed. The Pre-Neoproterozoic time slice shows what would be visible if all Neoproterozoic, Paleozoic, Mesozoic, and Cenozoic units were removed. The Cenozoic time slice layer for the national dataset was extracted from Raymond et al., 2012. Surface Geology of Australia, 1:1 000 000 scale, 2012 edition. Geoscience Australia, Canberra.

The Vlaming Sub-Basin CO2 Storage Potential Study web service includes the datasets associated with the study in the Vlaming Sub-basin, located within the southern Perth Basin about 30 km west of Perth. The data in this web service supports the results of the Geoscience Australia Record 2015/009 and appendices. The study provides an evaluation of the CO2 geological storage potential of the Vlaming Sub-basin and was part of the Australian Government's National Low Emission Coal Initiative.

Here we present 3D and 2D resistivity models of the lithosphere beneath an area of southeast Australia, derived from Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) data and a subsequent infill broadband MT transect collected in October 2020. The Flinders Ranges, South Australia, is a zone that has been weakened by multiple Precambrian rift cycles related to the breakup of Rodinia, which may have led to the utilisation of this lithosphere for the focussing of fluid alteration causing high conductivities at crust and upper mantle depths in this region, as imaged in the AusLAMP 3D resistivity models. The northwestern end of a 100 km MT transect traverses this region and its 1.5 km MT site spacing resolves high conductivity pathways that broadly correlate with previously identified mineral prospects. These pathways straddle the resistive granodiorite rocks of the Anabama pluton, known to host porphyry-style mineralisation. To the southeast, the transect images the onlapping Mesozoic Murra Abstract presented at Australasian Exploration Geoscience Conference (AEGC), 15-17 September 2021, Brisbane, Australia

Integrated datasets (airborne magnetic and gamma-ray spectrometric imagery, Landsat Thematic Mapper imagery, a digital elevation model, and water-bore logs) have contributed to an investigation of Cainozoic geology and hydrogeology, and their ecological impact on the habitat of a vulnerable species of marsupial, in a -2600-km2 area of semiarid central Australia in and around the Uluru-Kata Tjuta National Park. They show that a heterogeneous basement topography of domes and basins with 100 m of vertical relief (a buried 'mini-Kata Tjuta') underlies the Dune Plains, an extensive tongue-shaped sand plain between Kata Tjuta, Uluru, and Yulara. A significant feature of this buried landscape is a palaeodrainage valley, now the setting for a compound bedrock-Cainozoic-sediment aquifer system which is a major source of water supply for the inhabitants and tourists of this World Heritage Area. Major faults traverse the basement beneath the Dune Plains area, and a local elevation of bedrock causes a subsurface constriction near Yulara; both these features are important aquifer influences. The palaeovalley was originally a closed valley with discrete depocentres in which lacustrine and alluvial-fan sediments accumulated. Later, a river evolved, and flowed north to Lake Amadeus, not eastward as previously mapped. North of Yulara the palaeoriver spread out in a broad deltaic braid plain to the lake. The braid plain has received recent episodic floodwaters that have disrupted the Quaternary dunefields. Groundwater calcrete, and a sheetwash landscape unit composed of red earth, are important Quaternary geological units. The sheetwash landscape unit forms broad, gently sloping aprons around outcrops and supports banded mulga shrub land. During rainfall, surface run-off from this unit constitutes a distinctive 'sheetflow recharge' mechanism that maximises water conservation and infiltration for the underlying aquifer. The sheetwash landscape unit appears to have an important bearing on the ecosystem of the mulgara, a vulnerable marsupial that inhabits the Dune Plains. Whereas mulgara populations elsewhere in the Park contract during droughts, the Dune Plains population historically has survived. The transitional zone between the sheetwash red earth-mulga shrubland and the adjacent sandplain-spinifex association coincides with this core mulgara habitat. The hydrodynamic processes of the sheetwash unit carry concentrated nutrients to this zone, at the base of the slope, where infiltration occurs; these processes may be favourable to the mulgara's survival in the Dune Plains. Research into the soil, water, and nutrient cycles and processes in the sheetwash red earth-mulga shrubland and its adjacent transitional zone is recommended because of the interpreted importance of the surface and near-surface hydrodynamics to the distinctive ecosystem and to the recharge of the aquifer system. Further investigation of the locally complex hydrogeology is required, and a review of the groundwater resources in the Dune Plains aquifer system is recommended.

This map is part of the AUSTopo - Australian Digital Topographic Map Series. It covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 516 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of approximately 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and at least 110 kilometres from north to south. The topographic map shows approximate coverage of the sheets. The map may contain information from surrounding map sheets to maximise utilisation of available space on the map sheet. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. Coordinates: Geographical and MGA Datum: GDA94, GDA2020, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Digital PDF download.

Assessing the accuracy of predictive models is critical because predictive models have been increasingly used across various disciplines and predictive accuracy determines the quality of resultant predictions. Pearson product-moment correlation coefficient (r) and the coefficient of determination (r2) are among the most widely used measures for assessing predictive models for numerical data, although they are argued to be biased, insufficient and misleading. In this study, geometrical graphs were used to illustrate what were used in the calculation of r and r2 and simulations were used to demonstrate the behaviour of r and r2 and to compare three accuracy measures under various scenarios. Relevant confusions about r and r2, has been clarified. The calculation of r and r2 is not based on the differences between the predicted and observed values. The existing error measures suffer various limitations and are unable to tell the accuracy. Variance explained by predictive models based on cross-validation (VEcv) is free of these limitations and is a reliable accuracy measure. Legates and McCabe’s efficiency (E1) is also an alternative accuracy measure. The r and r2 do not measure the accuracy and are incorrect accuracy measures. The existing error measures suffer limitations. VEcv and E1 are recommended for assessing the accuracy. The applications of these accuracy measures would encourage accuracy-improved predictive models to be developed to generate predictions for evidence-informed decision-making. <b>Citation:</b> Li J (2017) Assessing the accuracy of predictive models for numerical data: Not r nor r2, why not? Then what? <o>PLoS ONE</i> 12(8): e0183250. https://doi.org/10.1371/journal.pone.0183250

This map is part of the AUSTopo - Australian Digital Topographic Map Series. It covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 516 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of approximately 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and at least 110 kilometres from north to south. The topographic map shows approximate coverage of the sheets. The map may contain information from surrounding map sheets to maximise utilisation of available space on the map sheet. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. Coordinates: Geographical and MGA Datum: GDA94, GDA2020, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Digital PDF download.

This map is part of the AUSTopo - Australian Digital Topographic Map Series. It covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 516 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of approximately 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and at least 110 kilometres from north to south. The topographic map shows approximate coverage of the sheets. The map may contain information from surrounding map sheets to maximise utilisation of available space on the map sheet. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. Coordinates: Geographical and MGA Datum: GDA94, GDA2020, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Digital PDF download.

Hydrogen for energy storage and transport is a key part of the energy transition. Caverns in salt formations can provide high integrity and large-scale storage (>200 GWh). Australia has several basins with thick salt in the subsurface that are prospective for underground hydrogen storage and Geoscience Australia's archive of digital data and physical samples is a crucial resource in assessing these deposits and finding more. New models for the deposition of giant salt deposits, new technologies and the new energy landscape make salt and hydrogen an exciting research frontier.