The dataset was derived by the Bioregional Assessment Programme from the Hunter RMS geological model. You can find a link to the parent dataset in the Lineage Field in this metadata statement. The History Field in this metadata statement describes how this dataset was derived.
The data set contains the ESRI grid versions of the depth structure exported from the folded and eroded RMS 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 completion 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.
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
Coordonate system: GDA_1994_MGA_Zone_56
The grids were used in ArcGIS maps to show the depth structure for the RMS model.
The data set contains the ESRI grids exported from the Hunter RMS geological model. There is a separate image for the legend. The grids were used in ArcGIS to show the depth structure for the RMS model. Depth values were recorded in the well completion reports for the Hunter subregion, then compiled into text files and surfaces built in the RMS model.
Bioregional Assessment Programme (XXXX) HUN RMS Model Depth Structure v01. Bioregional Assessment Derived Dataset. Viewed 22 June 2018, http://data.bioregionalassessments.gov.au/dataset/745ae8b3-d09a-4595-b6c9-3fe72a26e52f.
Derived From HUN Deep Wells Biomarkers v01
Derived From HUN Geological Model Inputs CSIRO 2014 to 2015 v01
Derived From Hunter deep well completion reports
Derived From South Sydney Deep Well Completion Reports