Open file digital geophysical data held by Mineral Resources Tasmania may be downloaded free of charge following acceptance of the conditions of use. There are also a number of images of data in ECW format and these can be viewed or linked to using free ECW plugins available from www.earthetc.com.
Airborne Geophysical Survey Data Mineral Resources Tasmania holds metadata and digital data for open-file airborne geophysical surveys over the State. There are also images of data from these surveys in ECW format.
State Index Map
The index map of open-file airborne geophysical surveys for which digital data are held by MRT may be viewed or searched spatially. Shapefiles of surveys boundaries (with associated metadata), tabular metadata and digital data can also be downloaded.
Airborne Survey Search
The index of open-file airborne geophysical surveys for which digital data are held by MRT may be searched textually and/or spatially to locate specific surveys. Shapefiles (with associated metadata), tabular metadata and digital data can then be downloaded by selecting Show Map and then using the export function of the map viewer.
Gravity Base Station Data Mineral Resources Tasmania maintains an index of gravity base stations that can be used as reference values for future surveys. The primary network was established by Geoscience Australia with subsidiary stations being established to facilitate later regional or detailed surveys.
State Map of gravity base stations
A map showing all indexed open-file gravity base stations may be searched spatially and information about the selected stations retrieved. This information may be viewed or printed and sketches etc downloaded.
Gravity Base Station Search
The index of open-file gravity base stations maintained by Mineral Resources Tasmania may be searched textually and/or spatially to locate specific base stations. The information retrieved may be viewed or printed and sketches etc downloaded.
Tasmanian Gravity Database
View the observation point distribution map
A map showing all open-file gravity observation points may searched spatially and information about selected observation points viewed.
Download the Bouguer Data
Download the entire open-file Tasmanian gravity database as Bouguer anomaly data.
Download the Residual Gravity Data
Download the entire open-file Tasmanian gravity database as residual anomaly data. The residual anomaly is produced by correcting the Bouguer anomaly data for the effects of Moho topography and the bathymetry of the waters surrounding Tasmania at each observation point (MRVGP8, UR1988/08).
Geodetic Survey Data
View a map showing the survey points
A map showing survey points, including many benchmarks, that may be searched spatially and information about selected survey points viewed.
Projects
Grids, images and located data from the aeromagnetic/radiometric surveys of the Western Tasmanian Regional Minerals Program (WTRMP) area are available. The data are from approximately 156 000 line kilometres of modern surveys flown with 200 metre spaced east-west lines and 80 metres nominal terrain clearance. Sample images of these data may be viewed.
On 31 August 2002 Mineral Resources Tasmania released the data from the WTRMP helicopter borne frequency domain electromagnetic survey of a number of areas of western and northwestern Tasmania considered to have potential for mineralisation (link to map). These areas include the Mt Read Volcanics, regions of prospective rock types underlain by granite at a depth of less than 4 kilometres and the Balfour region and represent approximately 15 600 line kilometres of data acquisition with a 200 metre line spacing.
Located and gridded basic data, located and gridded data from EMFlow and Sengpiel conductivity-depth transformations, and conductivity-depth profiles are now available from MRT.
MRT has released a CD of the aeromagnetic and radiometric data acquired during the 1994 NETGOLD project in Northeast Tasmania. The surveys covered Mathinna Group rocks that were outcropping or known to be at shallow depth and considered prospective for gold mineralisation. The predominant traverse spacing is 200 metres or less. The CD contains both ER Mapper grids and ECW images and is available from MRT for $55.00 including GST.
This page has been produced by Mineral Resources Tasmania, Department of Infrastructure, Energy and Resources, Tasmania. Questions concerning its content can be directed by e-mail to info@mrt.tas.gov.au. Questions concerning the site may be directed by e-mail to mrtweb@mrt.tas.gov.au or by mail to PO Box 56, Rosny Park, TAS 7018.
