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  • The coverage of this dataset is over the Taree region . The C3 LAS data set contains point data in LAS 1.2 format sourced from a LiDAR ( Light Detection and Ranging ) from an ALS50 ( Airborne Laser Scanner ) sensor . The processed data has been manually edited to achieve LPI classification level 3 whereby the ground class contains minimal non-ground points such as vegetation , water , bridges , temporary features , jetties etc . Purpose: To provide fit-for-purpose elevation data for use in applications related to coastal vulnerability assessment, natural resource management ( especially water and forests) , transportation and urban planning . Additional lineage information: This data has an accuracy of 0.3m ( 95 confidence ) horizontal with a minimum point density of one laser pulse per square metre. For more information on the data's accuracy, refer to the lineage provided in the data history .

  • Extended abstracts from various authors compiled as the Proceedings volume of the 2012 Australian Geothermal Energy Conference, 14-16 November 2012, Crown Plaza, Coogee Beach, Sydney.

  • The conjugate margins of Wilkes Land, Antarctica, and the Great Australian Bight (GAB) are amongst the least understood continental margins. Break up along the GAB-Wilkes Land part of the Australian-Antarctic margin commenced at approximately 83 Ma. Using recent stratigraphic interpretations developed for the GAB, we have established a sequence stratigraphy for the Wilkes Land margin that will, for the first time, allow for a unified study of the conjugate margins. By reconstructing the two margins to their positions prior to break up we were able to identify comparable packages on the Wilkes Land margin to those recognised on the GAB margin. Excluding the glacial sediments on the Antarctic margin, the sedimentary sequence along the Wilkes Land margin is very thin compared to the GAB margin, which has substantially more syn- and post-rift sediments. Despite the differences in thickness, the syn-rift sedimentary package on the Wilkes Land margin exhibits a similar style of extensional faulting and seismic character to its GAB margin counterpart. In comparison, post-rift sequences on the Wilkes Land margin are markedly different in geometry and seismic character from those found on the GAB margin. Isopach mapping shows substantial differences in the thickness of the post-breakup sediments, suggesting different sediment sources for the two margins. The Late Cretaceous Hammerhead Supersequence provides much of the post-rift thickness for the GAB margin as a result of large sediment influx into the basin. This supersequence is characterised by a thick progradational succession and was deposited in fluvio-deltaic and marine environments. The equivalent succession on the Wilkes Land margin has a different seismic character. It is thinner and aggradational, suggesting a distal marine environment of deposition.

  • This study aimed to assess the CO2 geosequestration potential of the Upper Campanian Caswell Fan (Upper Cretaceous), Caswell Sub-basin, Browse Basin, through an integrated reservoir study. The study focused on the basin geology, sedimentology and incorporated reservoir evaluation from well logs, seismic interpretation, velocity modelling, and time-depth conversion. The final stages included 3D grid construction and reservoir modelling through geostatistical analysis for lithofacies and petrophysical properties, which collectively were utilised to construct the geological reservoir model using the GoCadTM Software. Finally, a CO2 storage capacity assessment was completed based on the model. Under the controls of regional structural geology, sedimentary supply, sea level eustacy and palaeoclimate, several turbidite fans were formed during the Campanian Stage (Late Cretaceous) on the northwest shelf of Australia (Benson et al., 2004; Blevin et al., 1997). The lowstand Caswell Fan is a basin floor fan and was deposited predominantly as a series of sheet-like sands (reservoir) and succeeded by a deep marine mudstone (seal) after fan abandonment. The Browse Basin has extensive seismic survey coverage and both regional 2D and the North Browse 3D seismic survey data were interpreted to construct the structural pattern for Caswell Fan. The stacking velocity of the Caswell Sub-basin was used to establish the average velocity, which was validated by check-shot velocity and well marker data from wells. The data was then time-depth converted. Utilising the well-log data of the four wells that have intersected the Caswell Fan, i.e. Caswell-1, Caswell-2, Marabou-1 and Walkley-1, the percentage of shale within the formation (V-shale) was calculated, which in concert with rock descriptions, was used to define three lithofacies, namely sandstone, siltstone and non-reservoir rocks. The effective porosity and permeability were calculated from the well logs. Within the grid system of the Caswell reservoir, sequential Gaussian simulation has been employed to populate the reservoir properties, such as V-shale, porosity and permeability. In order to integrate the distribution pattern from seismic amplitude, kriging with locally varying mean technique was used for interpolation during sequential Gaussian simulation process. Within the reservoir model, proximal to the wells, the average porosity of the cells is 0.1828, the average permeability is 88.5 millidarcy, and the sand percentage is nearly 80%. The maximum true thickness of the reservoir within the Caswell Fan in the area of interest is 260.53 m. The total pore volume in the area of interest within Caswell Fan is 1.69 ×1010 m3. The density of supercritical CO2 at the top of Caswell reservoir is 649.55 kg/m3, and the characterised storage potential of the Caswell reservoir is 296 million tonnes using a median storage coefficient for clastic formations of 2.70% (P50) (US DOE methodology). For the purpose of reservoir simulation, the constructed geological grid system was upgridded, which included the reservoir parameters. The coarse grid model will be used for dynamic simulation later.

  • Homogeneity Tests for a Rotary Sample Divider Two rock types, a coarse-grained granite and a finer-grained volcanic rock, were used to test a Rotary Sample Divider attached to a Rocklabs Boyd Crusher for homogeneity. Approximately 3kg of each rock type were broken down by a jaw crusher, and then processed through a Boyd Crusher with splits taken using the attached rotary sample divider. The formula 10/(100-(10*n))-where n=the number of the split-was used to process the entire sample, i.e., 10% of the first split was taken and remainder returned to the Boyd crusher; 11% of the second split taken and remainder returned to the crusher; 12.5% of the 3rd one taken and remainder returned to the Boyd crusher etc., until all the sample was used and there were 10 roughly equal splits. Each split was halved and each half pulverised for 3 minutes in a Tungsten Carbide ring mill for 3 minutes. Pressed powder pellets and Lithium Borate glasses were made and analysed using a PW2404 XRF spectrometer. Results of major and trace element analysis shows that there is no apparent bias between either individual splits or from the first split to the last split, indicating homogeneity was achieved using the rotary sample divider.

  • Pixel Quality Assessment describes the results of a number of quality tests which are used to determine the quality of a Landsat image product in terms of, pixel saturation, pixel contiguity between spectral bands, whether the pixel is over land or sea, cloud contamination, cloud shadow and topographic shadow. Pixel Quality is used to filter an input Landsat image for downstream processing in a production workflow. It has general applicability to a number of image processing scenarios.

  • The Queen Charlotte Fault (QCF) off western Canada is the northern equivalent to the San Andreas Pacific - America boundary. Geomorphology and surface processes associated with the QCF system have been revealed in unprecedented detail by recent seabed mapping surveys carried out by the Canadian Hydrographic Service and the Geological Survey of Canada.

  • Airborne Electromagnetic data were acquired by Geoscience Australia in areas considered to have potential for uranium or thorium mineralisation under the Australian Government's Onshore Energy Security Program (OESP). The surveys have been managed and interpreted by Geoscience Australia's Airborne Electromagnetic Acquisition and Interpretation project. Government of South Australia Department for Manufacturing, Innovation, Trade, Resources and Energy (DMITRE), formerly the Department of Primary Industries and Resources South Australia (PIRSA), which changed name in October 2011 purchased infill. Three survey areas were recognised in the Frome AEM survey area and Cariewerloo traverses. Industry paid for infill - all of this data has now been released to the public domain and is available at the GA website. In contrast to industry style deposit scale investigations, these surveys are designed to reveal new geological information at regional scale. The Frome airborne electromagnetic data were acquired at line spacing's of between one and five kilometres, a total of 32 317 line km and covers an area of 95 450 km squared. The outcomes of the Frome AEM survey include mapping of subsurface geological features that are associated with unconformity-related, sandstone-hosted and palaeovalley-hosted uranium mineralisation. The data are also capable of interpretation for other commodities including metals and potable water as well as for landscape evolution studies. The improved understanding of the regional geology resulting from the Pine Creek survey results will be of considerable benefit to mining and mineral exploration companies. This Data Package is for Archive to the internal area of the CDS and contains all data, grids, images, mxd, shape files, documentation, licenses, agreements, interpretations and scripts used to create the Frome deliverables. At the projects completion (2012) all directories are required to be moved off the NAS. The reason to keep all the files is that more work is to be done on this data in the 2012-2015 period and these files may be needed in this future work.

  • Report on the results of using a multibeam sonar to map the Darling River at Menindee

  • 5 maps showing the offshore petroleum blocks in the Shared Area of the Perth Treaty. Also supplied were 4 Excel spreadsheets containing the listing of the blocks within the Perth Treaty. Requested by NOPTA 5th December 2012. Supplied as DRAFT in December, resubmitted without draft & new title on 12th February 2013 to RET & DFAT. LOSAMBA register 674.