Residual gravity data (TASRES) for the Tasmanian region have been interpreted to produce a three dimensional model of the major Tasmanian granitoids. The depths to the top surface of the granite bodies are presented as contours. Granodiorites are not included. References: Leaman, D.E.; Richardson, R.G. 1992. A geophysical model of the major Tasmanian granitoids. Tasmania Department of Mines Report 1992/11; Leaman, D.E.; Richardson, R.G. 2003. A geophysical model of the major Tasmanian granitoids. Mineral Resources Tasmania Report 2003/11. Model revised after Leaman, D.E 2012. An interpretation of the granitoid rocks of eastern Tasmania. Mineral Resources Tasmania Report GPCR2012_01. A raster version of the depth-to-granite model surface is available via the second edition of the Tasmanian Statewide 3D model package https://www.mrt.tas.gov.au/webdoc2/app/default/3d_model_detail?id=1154437

This dataset shows point locations at which geological samples have been taken and/or (less commonly) geological observations or measurements have been made. Only basic information is included, but further data for each point may be available on-line from the Mineral Resources Tasmania website (go to Products and Services/Database Searches/Samples and Geochemistry Search or use this link): http://www.mrt.tas.gov.au/portal/samples-and-geochemistry-search and click on Search, then Export Results) Data attached to each sample ideally includes metric coordinates (or sometimes lat/long), locality name and description, positional accuracy (3D), field and registration numbers, originator, project, collection date, sample type and description, and may include lithology, lithostratigraphy, chronostratigraphy, minerals, mineralisation types, potential hazards, soil type, storage details, references and comments. Major and trace element analyses and assays, petrophysical data (density, magnetic, electrical, thermal, sonic velocity etc.), electron microprobe analyses of minerals, x-ray diffraction determination of mineralogy, soil tests, photographs, reports and other data may be attached and are also down-loadable. Most points refer to surface samples or observations, but down-hole data is also included for some sample types. Data is open to the public for 126,606 records and closed, restricted or reserved for 67,879. The largest dataset is of rock samples (111,778, including 26,685 with whole-rock chemical analyses by x-ray fluorescence). The stream sediment dataset consists of 52,281 samples, mainly collected for mineral exploration and with geochemical results attached. The soil sample dataset (19,626) includes samples collected both for mineral exploration and geotechnical properties. There are smaller datasets for minerals (i.e. specimens, 4579 samples), mineralised samples (e.g. ores; 2781), sediments (e.g. heavy mineral sands, building sand, gravel, clay, 976), tailings and mine waste (1,926), fossils (344), environmental samples (e.g. dust at mine sites; 160), artificial samples (e.g. slags, metallurgical products, concrete; 289) and concentrates (e.g. of sluiced or panned tin or gold; 107). Drill logs (839) and miscellaneous readings/observations (including physical property measurements; 1610) are also included.

Geological lines (contacts, faults) and geological rock units, derived from 1:250,000 geology data. Rock units have been simplified based on a parent 1:500,000 unit, geological boundaries have been generalised to be suitable for 1:500,000 scale data. The digital data is available as a seamless state wide coverage and is used to produce the Geology of Tasmania 1:500,000 Scale map.

Geological lines (contacts, faults, linears), geological rock units, and structure data derived from 1:50,000 and 1:63,360 Digital Geological Atlas printed map series and 1:25,000 digital geology data where available. Geological units and boundaries have been generalised and compiled for 1:250,000 scale. The digital data is available as a seamless state wide coverage and is used to produce the Digital Geological Atlas 1:250,000 Scale map series.

Sites that may be precisely reoccupied (to within a few millimetres) by a gravity meter, for the purpose of tying gravity surveys to an absolute gravity datum. Precise location is facilitated by site photographs and sketches and descriptions in addition to coordinates; most of the latter are not sufficiently accurate on their own. Absolute gravity values at each station are for at least one of the following datums: Isogal65, Isogal84, Australian Absolute Gravity Datum 2007 (AAGD07). The stations have been established either by absolute gravimetry or multiple repeat loop measurements with respect to other base stations.

Mineral occurrences, including operating and abandoned mines, located in Tasmania, with summary mineral occurrence data, derived from the Mineral Occurrence Database, which is a component of the Tasmanian Information on Geoscience and Exploration Resources (TIGER) system; administered by Mineral Resources Tasmania (MRT). Mineral occurrences include operating and abandoned mines, prospects, mapped occurrences and mineral fields or mineralised areas. Mineral occurrences are shown subdivided by commodity type, which largely corresponds to the mineral categories defined in the Mineral Resources Development Act 1995; Fuel Minerals, including geothermal (Categories 2, 4 and 6), Construction Minerals (Category 3), Industrial minerals (Category 5) and metallic minerals (Category 1). Alluvial, placer and man-made (tailings dam) occurrences are shown separately (commodities are mineral Categories 1 and 5) and occurrences (generally abandoned mine workings) where there are no records of the commodity of interest, are shown as unknown. The summary Mineral Occurrence data includes: the Mineral occurrence name (note that an occurrence may have multiple names or aliases), the commodity type (as defined above), the nature of the occurrence (e.g., mine or prospect, mineralised area), the commodity or commodities present, the geological unit that hosts the occurrence and the positional accuracy of the record. A Details field provides a link to a Mineral Occurrence Details page where further information, including references and public domain resource figures, may be available.

Legacy product - no abstract available

Geological lines (contacts, faults, linears), geological polygons (rock units and alteration or metamorphism) and geological points (outcrops and structure data) derived from existing reports, 1:25,000 1:50,000 and 1:63,360 scale printed maps, new field mapping and interpretation of aerial photography, remote sensing data and airborne geophysical data. Digital data is available as a seamless layer, with the understanding that it may include unresolved edge-matching issues originating from mapping project boundaries in the source data. The digital data is used to produce the Digital Geological Atlas 1:25,000 Scale map series.