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geoscientificInformation

27497 record(s)
 
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  • Effective mineral, energy and groundwater resource management and exploration rely on accurate geological maps. While geological maps of the surface exist and increase in resolution, maps of the subsurface are sparse, and the underpinning geological and geophysical constraints are disordered or non-existent. The Estimates of Geological and Geophysical Surfaces (EGGS) database seeks to enable robust subsurface geological mapping by establishing an ordered collection of precious geological and geophysical interpretations of the subsurface. EGGS stores the depth to geological boundaries derived from boreholes as well as interpretations of depth to magnetic top assessments, airborne electromagnetics inversions and reflection seismic profiles. Since geological interpretation is iterative, links to geophysical datasets and processing streams used to image the subsurface are stored. These metadata allow interpretations to be readily associated with the datasets from which they are derived and re-examined. The geological basis for the interpretation is also recorded. Stratigraphic consistency is maintained by linking each interpretation to the Australian Stratigraphic Units Database. As part of the Exploring for the Future program, >170 000 points were entered into the EGGS database. These points underpin construction of cover thickness models and economic fairway assessments. <b>Citation:</b> Mathews, E.J., Czarnota, K., Meixner, A.J., Bonnardot, M.-A., Curtis, C., Wilford, J., Nicoll, M.G., Wong, S.C.T., Thorose, M. and Ley-Cooper, Y., 2020. Putting all your EGGS in one basket: the Estimates of Geological and Geophysical Surfaces database. In: Czarnota, K., Roach, I., Abbott, S., Haynes, M., Kositcin, N., Ray, A. and Slatter, E. (eds.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, 1–4.

  • The Marine Survey Multibeam Bathymetry Web Map Service contains the highest-resolution multibeam bathymetry grids available for download on Geoscience Australia's website. These bathymetry grids were collected over numerous multibeam survey programs conducted in Australian mainland and Antarctic waters by both Geoscience Australia and our collaborators. Layers are grouped by survey or region and where available include both the Geoscience Australia and vessel survey identification numbers that contributed to the bathymetry grids. Bathymetry grids have been rendered over a rainbow colour-ramp with minimum and maximum depth values unique for each survey. These values are specified in each survey's layer description. The resolution of each bathymetry grid is also specified in each survey's layer description

  • This service represents the National Digital Elevation Model (DEM) 1 Second Percentage Slope product, derived from the National DEM SRTM 1 Second. Slope measures the inclination of the land surface from the horizontal. Percent slope represents this inclination as the ratio of change in height to distance.

  • The Joseph Bonaparte Gulf survey (SOL4934, GA survey #0322) was conducted on the R.V. Solander between 27 August and 24 September 2009 in collaboration with staff from the Australian Institute of Marine Science (AIMS) and the Northern Territory Government. The survey was completed under a Memorandum of Understanding between GA and the AIMS and represents the second of three surveys planned under this agreement. The survey obtained detailed geological (sedimentological, geochemical, geophysical) and biological data for the banks, channels and plains to establish the late-Quaternary evolution of the region and investigate relationships between the physical environment and associated biota for biodiversity prediction. Underwater video footage and still images were collected from 46 stations, although quality varies among transects and some still images were not of suitable quality for analysis. In addition, shipboard photographs were taken of barcoded biological specimens. Video and image files or associated parent folders are named according to station number, followed by gear code (TV or CAM = same underwater camera system) and then the deployment number. For example 48CAM35 represents a video transect from Station 48 that was the 35th video transect on the survey.

  • This web service provides access to the Waste Management Facilities dataset and presents the spatial locations of all the known waste management, recycling and reprocessing facilities within Australia, all complemented with feature attribution.

  • This web service provides access to the Major Power Stations, Transmission Substations and Electricity Transmission Lines datasets. These datasets present the spatial locations of all known features in Australia.

  • This dataset contains the limit and extent of Northern Australia as defined by the Northern Australia Infrastructure Facility Act 2016 (https://www.legislation.gov.au/Details/C2021C00228) and Northern Australia Infrastructure Facility Amendment (Extension and Other Measures) Act 2021 (https://www.aph.gov.au/Parliamentary_Business/Bills_Legislation/bd/bd2021a/21bd062).

  • The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium, uranium and thorium. The data are collected on airborne geophysical surveys conducted by Commonwealth, State & NT Governments and the private sector.

  • <p>2D seismic reflection data were acquired in the South Gippsland region of Victoria in June-July 2015. The project was a collaboration between the Geological Survey of Victoria (GSV) and Geoscience Australia (GA). The purpose of the survey was to gain an understanding of the geometry and internal structure of the Cretaceous Strzelecki Group and the underlying Palaeozoic basement of the Melbourne Zone. <p>Two hundred and three km of deep crustal reflection data were collected for the South Gippsland seismic survey along four transects 15GA-SG1, 15GA-SG2, 15GA-SG3 and 15GA-SG4. The data processing is being undertaken by a contractor on behalf of GA and GSV and is expected to be released in March 2016. <p>Raw data are available on request from clientservices@ga.gov.au