8c4f382f-1b5b-45f5-bdd6-4cf8145af8ec urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2018-06-06T03:54:14 creation ISO 19115 2016 HUN RMS Model Isochores v01 8c4f382f-1b5b-45f5-bdd6-4cf8145af8ec ## **Abstract** The dataset was derived by the Bioregional Assessment Programme from a source dataset. The source dataset is identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement. The data set contains the isochores shapefile of the well locations used in the structural geological model for the Hunter subregion. RMS geomodelling was used to construct the geological model for the Hunter subregion. The model was built using data extracted from well completions reports published by mining companies and consultants which record the depth of various formations encountered during drilling works. These data were compiled into model input files (See data set: Hunter deep well completion reports - f2df86d5-6749-48c7-a445-d60067109f08) used to build the RMS model including these isochores. The isochores dataset is a set of shapefiles representing the location of the wells and the depth of the formations at those locations. Nine geological formations and their depths from the surface are included covering a grid across the Basin. The geological model is based on measured depths recorded in well completion reports published by mining companies and consultancies. The naming convention refers to the geological age and depth (TVD ss = total vertical depth subsea reported to the Australian Height Datum) of the various formations as follows: Regional horizon name Age (geological stage) Newcastle Coalfield Hunter Coalfield Western Coalfield Central or Southern coalfields M600 Top Anisian Top Hawkesbury Sandstone Top Hawkesbury Sandstone Top Hawkesbury Sandstone Base Wianamatta Group M700 Top Olenekian Base Hawkesbury Sandstone Base Hawkesbury Sandstone Base Hawkesbury Sandstone Base Hawkesbury Sandstone P000 Top Changhsingian Base Narrabeen Group Base Narrabeen Group Base Narrabeen Group Base Narrabeen Group P100 Upper Wuchiapingian Base Newcastle Coal Measures Base Newcastle Coal Measures Top Watts Sandstone Top Bargo Claystone P500 Mid Capitanian Base Tomago Coal Measures Base Wittingham Coal Measures Base Illawarra Coal Measures Base Illawarra Coal Measures P550 Top Wordian Base Mulbring Siltstone Base Mulbring Siltstone Base Berry Siltstone Base Berry Siltstone P600 Mid Roadian Base Maitland Group Base Maitland Group Base Shoalhaven Group Base Shoalhaven Group P700 Upper Kungurian Top Base Greta Coal Measures Top Base Greta Coal Measures P900 Base Serpukhovian Base Seaham Formation Base Seaham Formation with 'M' referring to Mesozoic and 'P' to Paleozoic. ## **Dataset History** RMS geomodelling was used to construct the geological model for the Hunter subregion. The data set contains the isochores used in the geological model. The model was built using data extracted from well completions reports published by mining companies and consultants, which record the depth of various formations encountered during drilling works. These data were compiled into model input files (See dataset: Hunter deep well completion reports - f2df86d5-6749-48c7-a445-d60067109f08) used to build the RMS model. The isochores dataset is a set of shapefiles representing the location of the wells and the depth of the formations at those locations, derived from the well completion reports. ## **Dataset Citation** Bioregional Assessment Programme (2015) HUN RMS Model Isochores v01. Bioregional Assessment Derived Dataset. Viewed 22 June 2018, http://data.bioregionalassessments.gov.au/dataset/1912785b-d12f-4e96-bb6d-baf7897aa3a0. ## **Dataset Ancestors** * **Derived From** [Hunter deep well completion reports](https://data.gov.au/data/dataset/f2df86d5-6749-48c7-a445-d60067109f08) Hunter subregion New South Wales economy elevation geoscientificInformation HUN RMS Model Isochores v01 documentDigital Data File ZIP