In May 2013, Geoscience Australia, in collaboration with the Australian Institute of Marine Science, undertook a marine survey of the Leveque Shelf (survey number SOL5754/GA0340), a sub-basin of the Browse Basin. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Heyward Formation (the seal unit overlying the main reservoir). The survey collected one hundred and eleven seabed sediment samples that were analysed for their grain size, textural composition and carbonate content. This dataset includes the results of grain size analysis measured by laser diffractometer.

The dataset was created by Geoscience Australia using the framework described in Section 33 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGS Act) and previous Acts. The international, scheduled areas and coastal waters used in this dataset are those found in the historical Australian Maritime Boundary Dataset 2006 (AMB2006). This version contains a number of technical amendments made on the basis of user feedback. These include: - Harmonisation of maritime boundaries, scheduled area and graticular block datasets in block SC51 The dataset is comprised of both polygons and points created to very high precision, accurate to within millimetres. The blocks have been cut by Australia's international boundaries, the scheduled areas and the coastal waters. Each block is assigned a polygon, including partial blocks. All blocks are titled with their block ID, and a list of vertices that make up the blocks. Each vertex of the dataset is also replicated as a discrete point in the points dataset. The design of the dataset allows for the exact location of every vertex to be known to millimetre precision. The corner coordinates of blocks are now defined to a high precision, and can be found by querying the appropriate point. Existing production licences AC/P17, AC/RL4, and AC/RL5 are included in the dataset. The blocks are attributed with fields containing information on: - Parent 1 Million Mapsheet - Offshore Area - Epoch of the boundaries used to cut the data AMB2001 - Datum - Origin of the mapsheet in AGD66 - The position of all vertices in the block - The number of vertices in the block - The area of the block in acres - The area of the block in hectares The calculation used to find the area of the blocks is estimated to be precise to better than 1%. This is considered to be sufficient as under the permit and licensing arrangements in the OPGGS Act, the area of a block has no relevance. Therefore the area figure is provided solely for reference.

The dataset was created by Geoscience Australia using the framework described in Section 33 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGS Act) and previous Acts. The international, scheduled areas and coastal waters used in this dataset are those found in the current Australian Maritime Boundary Dataset 2014 (AMB2014a). This version contains a number of technical amendments made on the basis of user feedback. These include: - Removal of lease AC/P17 - Harmonisation of maritime boundaries, scheduled area and graticular block datasets in block SC51 The dataset is comprised of both polygons and points created to very high precision, accurate to within millimetres. The blocks have been cut by Australia's international boundaries, the scheduled areas and the coastal waters. Each block is assigned a polygon, including partial blocks. All blocks are titled with their block ID, and a list of vertices that make up the blocks. Each vertex of the dataset is also replicated as a discrete point in the points dataset. The design of the dataset allows for the exact location of every vertex to be known to millimetre precision. The corner coordinates of blocks are now defined to a high precision, and can be found by querying the appropriate point. Existing production licences AC/RL4, and AC/RL5 are included in the dataset. The blocks are attributed with fields containing information on: - Block ID - Parent 1 Million Mapsheet - Offshore Area - Epoch of the boundaries used to cut the data AMB2014 - Datum - Origin of the mapsheet in AGD66 - The position of all vertices in the block - The number of vertices in the block - The area of the block in acres - The area of the block in hectares The calculation used to find the area of the blocks is estimated to be precise to better than 1%. This is considered to be sufficient as under the permit and licensing arrangements in the OPGGS Act, the area of a block has no relevance. Therefore the area figure is provided solely for reference.

The Gazetteer provides information on the location and spelling of more than 332 000 geographical names across Australia as at January 2011. The supply of data is coordinated by the Intergovernmental Committee on Surveying and Mapping and derived from State, Territory and Australian Government agencies. Copyright of the Gazetteer data resides with the relevant state, territory and Australian Government agencies which are custodians of the data. The Gazetteer fields include: - Record ID - unique feature identifier for each feature. - Authority ID - custodian state or territory. - State ID - state or territory which contains the feature. - Name - name of the feature. - Feature Code - code indicating the type of feature - Status - indicates whether the name is authorised. - Variant name - variant or alternative name used for the feature. - Postcode - Postcode for the feature. - Concise Gazetteer - indicates whether the feature is included in the concise gazetteer. - Longitude - longitude of the feature in decimal degrees. - Latitude - latitude of the feature in decimal degrees. - 100K map number - 1:100 000 scale map number in which the feature is located. - CGDN - indicates whether the place name can be used in the state.au second level domains by community website portals which reflect community interests. Product specifications: - Coverage: Australia - Currency: 2010 - Coordinates: Geographical - Datum: GDA94 - Format: Fixed width ASCII and Microsoft Access Database - Medium: WEB - Forward Program: Annual revision Please note: The custodians of the place name data do not guarantee that the data is free from errors and omissions. If possible errors or omissions in the data are identified, please contact <a href=mailto:gazetteer@ga.gov.au>gazetteer@ga.gov.au</a>, corrections are forwarded to the State and Territories, Name Authorities for clarification. Updates will appear in subsequent revisions of the Gazetteer.

Geoscience Australia defines a borehole as the generalized term for any narrow shaft drilled in the ground, either vertically or horizontally, and would include Mineral Drillholes, Petroleum Wells and Water Bores along with a variety of others types, but does not include Costean, Trench or Pit. For the purpose of a borehole as defined by GeoSciML Borehole 3.0, the dataset has been restricted to onshore and offshore Australian boreholes, and bores that have the potential to support geological investigations and assessment of a variety of resources.

The dataset was created by Geoscience Australia using the framework described in Section 33 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGS Act) and previous Acts. The international, scheduled areas and coastal waters used in this dataset are those found in the current Australian Maritime Boundary Dataset 2020 (AMB2020). The 2020 release has been updated to reflect the 2018 Timor Sea Treaty. Available for download in GDA94 or GDA2020. The dataset is comprised of both polygons and points created to very high precision, accurate to within millimetres. The blocks have been cut by Australia's international boundaries, the scheduled areas and the coastal waters. Each block is assigned a polygon, including partial blocks. All blocks are titled with their block ID, and a list of vertices that make up the blocks. Each vertex of the dataset is also replicated as a discrete point in the points dataset. The design of the dataset allows for the exact location of every vertex to be known to millimetre precision. The corner coordinates of blocks are now defined to a high precision, and can be found by querying the appropriate point. The blocks are attributed with fields containing information on: - Block ID - Parent 1 Million Mapsheet - Offshore Area - Epoch of the boundaries used to cut the data AMB2014 - Datum - Origin of the mapsheet in AGD66 - The position of all vertices in the block - The number of vertices in the block - The area of the block in acres - The area of the block in hectares The calculation used to find the area of the blocks is estimated to be precise to better than 1%. This is considered to be sufficient as under the permit and licensing arrangements in the OPGGS Act, the area of a block has no relevance. Therefore the area figure is provided solely for reference.

Geoscience Australia has the primary role in the delineation of Australia's domestic and international maritime limits and boundaries. An output of this activity is the development of the Australian Maritime Boundaries (AMB) data. AMB is a GIS data product, replacing Australian Maritime Boundaries 2014 (AMB2014), providing access to the data for Australia's maritime zones. AMB is a digital representation of Australia's limits and boundaries as established under the Seas and Submerged Lands Act 1973 and associated proclamations. The data also include a representation of the limits by which the scheduled and offshore areas of each of the States and of the Northern Territory are determined under the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (OPGGSA). In the event of an inconsistency between AMB data and the limits under any legislation, the latter prevails. The data have been published by Geoscience Australia in consultation with other relevant Commonwealth Government agencies including the Attorney-General's Department, the Department of Foreign Affairs and Trade and the Australian Hydrographic Office. This version contains a number of technical amendments made on the basis of user feedback. These include: · Harmonisation of maritime boundaries, scheduled area and graticular block datasets in block SC51 AMB data comprise the territorial straight baselines and the outer limits of each zone, together with maritime boundaries determined by treaties between Australia and neighbouring countries. All data coordinates are supplied in the GDA94 datum. The data reflects the location of the coastline within the constraints of available source material at the time of production. AMB Data can also be viewed on-line via AMSIS (http://www.ga.gov.au/marine/jurisdiction/amsis.html). Product Specifications Coverage: Australia including all external territories Currency: May 2014. Coordinates: Geographical Datum: GDA94 (functionally equivalent to WGS84). Format: ESRI Geodatabase and REST web service - free online. The area of coverage of the AMB data is for the whole of the Australian marine jurisdiction which includes waters adjacent to the mainland, offshore islands and External Territories. The geographical extent is approximately between the latitude limits of 7 S to 70 S and the longitude limits 40 E to 175 E. This dataset includes the following disclaimer: AMB data is a digital representation of the territorial sea baseline and of the outer limits of Australia's maritime zones. The baseline and zones are established under the Seas and Submerged Lands Act 1973. The data also includes a representation of the limits by which the waters adjacent to each of the Australian States and of the Northern Territory are determined under the Coastal Waters (State Powers) Act 1980, Coastal Waters (Northern Territory Powers) Act 1980 and the Offshore Petroleum and Greenhouse Gas Storage Act 2006. In the event of an inconsistency between AMB data and the baselines and limits under the legislation, the latter prevails.

The Gazetteer provides information on the location and spelling of more than 370,000 geographical names across Australia as at January 2012. The supply of data is coordinated by the Intergovernmental Committee on Surveying and Mapping and derived from State, Territory and Australian Government agencies. Copyright of the Gazetteer data resides with the relevant state, territory and Australian Government agencies which are custodians of the data. The Gazetteer fields include: - Record ID - unique feature identifier for each feature. - Authority ID - custodian state or territory. - State ID - state or territory which contains the feature. - Name - name of the feature. - Feature Code - code indicating the type of feature - Status - indicates whether the name is authorised. - Variant name - variant or alternative name used for the feature. - Postcode - Postcode for the feature. - Concise Gazetteer - indicates whether the feature is included in the concise gazetteer. - Longitude - longitude of the feature in decimal degrees. - Latitude - latitude of the feature in decimal degrees. - 100K map number - 1:100 000 scale map number in which the feature is located. - CGDN - indicates whether the place name can be used in the state.au second level domains by community website portals which reflect community interests. Product specifications: - Coverage: Australia - Currency: 2012 - Coordinates: Geographical - Datum: GDA94 - Format: Microsoft Access Database, KML, GML - Medium: WEB - Forward Program: Annual revision Please note: The custodians of the place name data do not guarantee that the data is free from errors and omissions. If possible errors or omissions in the data are identified, please contact gazetteer@ga.gov.au Corrections are forwarded to the State and Territories, Name Authorities for clarification. Updates will appear in subsequent revisions of the Gazetteer.

OZCHEM is Geoscience Australia's national whole-rock geochemical database. This release of OZCHEM contains over 50000 analyses of rocks, regolith and stream sediments from many regions of Australia. Each analysis includes a geographic location and a geological description, which includes the host stratigraphic unit, where known, and the lithology. Most samples have been collected by Geoscience Australia's field parties. OZCHEM is stored in an ORACLE relational database and is available in comma-delimited flat ASCII format. The data set is also bundled with documentation explaining the database structure and includes definitions of the database tables and columns (attributes).

The Dynamic Land Cover Dataset Version 2 is a suite of land cover information products from Geoscience Australia (GA). These information products deliver International Standards Organisation (ISO) compliant land cover maps across the Australian landmass. The datasets provide a consistent series of maps that show how Australian land cover is changing over time. The current version consists of 14 maps each based on 2 years of MODIS data. The 14 maps cover the period from January 2001 - December 2015. The Dynamic Land Cover Dataset uses a standard land cover classification to show the change in behaviour of land cover across Australia. The DLCD includes data for every 250m by 250m area on the ground, for the period 2001 to 2015. The DLDC provides a basis for reporting on change and trends in vegetation cover and extent. Information about land cover dynamics is essential to understanding and addressing a range of national challenges such as drought, salinity, water availability and ecosystem health. The current release of the second version DLCDv2.1 presents land cover information for every 250m by 250m area of the country for each of the two year intervals listed in the table below. It consists of maps based on 2 years of MODIS EVI time-series data. The date ranges for each of the map series are: • January 2001-December 2002 • January 2002-December 2003 • January 2003-December 2004 • January 2004-December 2005 • January 2005-December 2006 • January 2006-December 2007 • January 2007-December 2008 • January 2008-December 2009 • January 2009-December 2010 • January 2010-December 2011 • January 2011-December 2012 • January 2012-December 2013 • January 2013-December 2014 • January 2014-December 2015 DLCD can be used as an input for a wide range of environmental modelling applications, including: • Climate • Wind and water erosion risk • Evapotranspiration • Carbon dynamics • Land surface processes In conjunction with other data sources, the DLCD can be used to identify emerging patterns of land cover change and provide a spatial and historical context within which to interpret change. The land cover classification scheme used conforms to the 2007 International Standards Organisation (ISO) land cover standard (19144-2). The dataset shows Australian land covers clustered into 22 classes. These reflect the structural character of vegetation, ranging from cultivated and managed land covers (crops and pastures) to natural land covers such as trees and grasslands.