3D geological model of the Murray Basin 2011
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Product description:The Murray Basin 3D model covers Victorian component of the basin from the Victoria / N.S.W border to the southern margin of the basin. The model consists of a Pre-Cenozoic basement surface, the top of the Warina Sand and Olney Formation of the Renmark Group, the top of Murray Supergroup, and the base of the Calivil Sand deep leads in the east.Surfaces were created from borehole data, including integration of previous disparate datasets. A boreholes dataset was extracted from the GEDIS boreholes database and subsequently refined to exclude null datasets and shallow bores. Lithology logs, micropalaeontological and palynological data and prior stratigraphic determinations from the GEDIS database were used to identify formation tops. Geophysical logs and CRAE wireline log hard copies were also used. Previously recorded formation tops and a top of basement surfaces were also combined into the 3D model. These included the basement (across zone 54 of Knight et al. (1995), and the formation tops of Lawrence (1975), basinwide; Tickell (1977), covering the Riverine Plain; and the Goldie-Divko (2009) subsurface examination of the Kerang area (transition between the western and eastern depocentres). How to use the model To view the PDF of the 3D model you will need the latest version of Adobe Acrobat Reader (Version 9 or later). After opening the model, clicking on the image will enable menus that give you the ability to rotate the model and zoom. You can switch layers on and off via the “Model Tree” (tab on left side). The 3D PDF contains points, curves, surfaces and a voxet. The voxet is made up of cells (1500m x 1500m x 10m) and contains stratigraphic volumes of the main components of the Murray Basin. Voxets are typically created with specific parameters to suit a particular purpose. Given it is not possible to anticipate the user’s requirements, the voxet has been included in the PDF for visualisation purposes only. The PDF opens with a vertical exaggeration of x50. The model is also provided in dxf format. These are separated into three files which contain points, curves and surfaces.
Projection: Universal Transverse Mercator (UTM) Zone 54 Datum: Geocentric Datum of Australia (GDA94) Bounding box Map Grid of Australia 1994 (MGA94) coordinates X min 498750m, X max 1025250m Y min 5853000m, Y max 6234000m Z min -645m, Z max 1795m Cultural data Cultural points and lines have also been imported into the 3D model which assist with locating specific faults relative to non-geological features. The following GIS layers have been incorporated from GeoScience Victoria’s corporate database. These data layers are downloadable from GeoVic
Output model All modelling was performed in SKUA (2009.3) and exported into Adobe Acrobat. References Goldie-Divko, 2009, Sub-surface geology of the Kerang district, Murray Basin, southeast Australia, PhD Thesis (unpublished), Deakin University. Knight, L.A., McDonald, P.A., Frankel, E. and Moore, D.H., 1995, A preliminary appraisal of the pre-Tertiary infrabasins beneath the Murray Basin, northwestern Victoria. Victorian Initiative for Minerals and Petroleum Report 16. Department of Agriculture, Energy and Minerals, 145. Lawrence, C.R., 1975, Interrelationship of geology, hydrodynamics and hydrochemistry of the southern Murray Basin. Mines Department, Geological Survey of Victoria. Tickell, S.J. 1977, The geology and hydrogeology of the eastern part of the Riverine Plain in Victoria. Geological Survey of Victoria, Report 1977/8. | ||||||
