Abstract:This dataset is a digital realisation of the Blocks as defined under Section 33 (3) of the Offshore Petroleum and Greenhouse Gas Storage Act 2006. The blocks are created using a 5 minute by 5 minute graticular section that has been trimmed to the extent of the Offshore Area (defined in the same Act). The dataset is comprised of both points and polygons, and is densified to ensure the geometry will remain correct regardless of projection. The dataset's coverage includes areas of coastal waters and land within the constitutional limits of the States and territories, however in these areas the data is indicative only. For titles within the limits of the coastal waters, the relevant State agency should be consulted.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 hectaresThe 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.© Commonwealth of Australia (Geoscience Australia).Downloads and Links:Web ServicesOPGGSA 2006 Petroleum Blocks MapServerOPGGSA 2006 Petroleum Blocks WMSOPGGSA 2006 Petroleum Blocks WMTSOPGGSA 2006 Petroleum Blocks WFSDownloads available from the expanded catalogue link, belowMetadata URL:https://pid.geoscience.gov.au/dataset/ga/144568