Geological Survey of Western Australia e-News - Department of Mines and Petroleum

Forthcoming geophysical data releases

Thursday 29 May 2014 after 0900 AWST (UTC +8)

Airborne magnetic and radiometric surveys — FINAL data:

Widgiemooltha North 2013 (R70823)
Menzies South 2013 (R70848)

Images and grids of final data from the regional magnetic and radiometric surveys at line spacing of 100 m completed in January and March 2014 respectively will be available from the Geological Survey of Western Australia (GSWA) website on Latest Geophysical Surveys and via the GSWA online map application, GeoVIEW.WA.

Point-located ('vector') data and grids can be downloaded free of charge from the Geophysical Archive Data Delivery System (GADDS).

Thursday 26 June 2014

Capricorn 2013 airborne electromagnetic survey — FINAL data

Final datasets from the Capricorn reconnaissance airborne electromagnetic TEMPEST survey at line spacing of 5000 m completed in January 2014 will be ready for release no later than 26 June 2014. Final data checking is in progress and an earlier release date is possible if no issues emerge. Confirmation will be provided in another newsletter to be issued approximately one week before the definitive release date.

The data release package is being finalized and is anticipated to include the following datasets:

Point-located, computed B-field EM time-series channel data in ASEG-GDF2 (ASCII) format (also TMI and terrain data)
Point-located computed conductivity and terrain data in ASCII format
Data multiplots (EM x- and z-component time series, CDI sections, TMI, altimeter and monitor channels) in PDF format
CDI stacked sections in PDF format
Gridded data: EM time constant (x- and z-components); selected conductivity-depth slices (in ER Mapper format, 1 km cell size)
Georeferenced images of gridded data in JP2 format
Flight path map in ESRI shapefile format
Survey operations report in PDF format

Details of the data download locations on the GSWA and Geoscience Australia (GA) websites will be provided in the definitive release newsletter. The data package will also be available on hard media for collection or dispatch by post on the day of release (USB drive, $55; external hard drive, $132) for orders submitted via the online MAGIX data request form at least three working days before the day of release.

Most recent geophysical data releases

*Date*	Survey	Data status
20 Feb 2014	Goldfields 2013 ground gravity survey	Final
11 Nov 2013	Gravity anomaly grid (400 m) of WA	2013 – v2
25 Oct 2013	WA 1:250 000 map sheets geophysical images and grids	2013 – v1
24 Oct 2013	Menzies North 2013 airborne mag/rad survey	Final
24 Oct 2013	Esperance 2013 gravity survey	Final
20 Sep 2013	Radiometric anomaly grids (80 m) of WA	2013 – v1
20 Jun 2013	Magnetic anomaly grid (40 m) of WA	2013 – v1
20 Jun 2013	Magnetic anomaly grid (80 m) of WA	2013 – v2
06 Jun 2013	Widgiemooltha South 2012 airborne mag/rad survey	Final

Access to previously released geophysical data

Image data from previous geophysical releases can be found on our Regional Geophysical Surveys page. Digital located and grid data can be purchased on media from Geoscience Australia or downloaded free of charge through the Geophysical Archive Data Delivery System (GADDS).

Latest releases

REPORT DATA PACKAGE

Report 123 3D architecture and mineral prospectivity of the Gascoyne Province
by Aitken, AR, Joly, A, Dentith, MC, Johnson, SP, Thorne, AM and Tyler, IM
The USB contains:

GSWA Report 123 as a PDF
Appendix 2 tables with input parameters for predictor maps (PDF)
Appendix 2 predictor maps used for mineral prospectivity analysis — provided as spatially located raster (GeoTIFF) files
ESRI ArcGIS files including:

crustal-scale faults
geochemistry points
basic topographic data

Prospectivity maps — provided as spatially located raster (GeoTIFF) files

Cost is $55 inc. GST

RECORDS

Record 2013/11 Geological setting of mineral deposits in the Southern Cross district — a field guide
by Doublier, MP

Record 2014/3 Regolith geochemistry and mineral prospectivity— the southeast Yilgarn Craton and east Albany–Fraser Orogen
by Scheib, AJ

RESOURCE POTENTIAL FOR LAND USE PLANNING (MAPS)

These maps were produced at the request of the Western Australian Planning Commission.

Spotlight on a product

Record 2014/3 Regolith geochemistry and mineral prospectivity — the southeast Yilgarn Craton and east Albany–Fraser Orogen
by AJ Scheib

Regolith geochemistry has been widely used to evaluate mineral prospectivity in areas dominated by residual regolith, although its usefulness in areas dominated by transported regolith is less certain. This Record demonstrates that regolith geochemistry can be used to see through transported cover in the southeast Yilgarn Craton and east Albany–Fraser Orogen, providing further evidence for expansion of mineral exploration across this greenfields area. This area is largely covered by transported regolith dominated by eolian sand and colluvium, with very little exposed bedrock. However, the mineral prospectivity of the area has been highlighted by the discovery of the Tropicana–Havana gold (Au) and the Nova nickel–copper (Ni–Cu) deposits. These discoveries have prompted work by GSWA to better understand the Albany–Fraser Orogen and its relationship to the Yilgarn Craton. Such geological and geophysical mapping helps to understand and develop a geological framework, although it is important for mineral exploration to determine whether regolith geochemistry can be used to detect different bedrock types and bedrock-hosted mineralization.

Free GSWA database training 2014

Minedex Search_projects

GSWA offers FREE training in its databases and online systems.

Topics include:

navigating the Department of Mines and Petroleum's (DMP) website
searching for geoscience publications
finding digital datasets using the Data and Software Centre
searching for open-file mineral exploration reports using WAMEX
searching the mineral drillholes and geochemistry databases
bringing it all together with the interactive map viewer, GeoVIEW.WA and GeoMap.WA, a standalone GIS viewer for Windows.

The morning session is a basic introduction of how to use the programs. During the afternoon session, participants will get in-depth practice using the programs with their own examples. Both sessions assume competent computer skills. You can attend one or both sessions.

PERTH

Thursday 12 June (full session)
Friday 11 July
Thursday 30 October

KALGOORLIE

Thursday 19 June
Thursday 6 November

To register or for more information, email publications@dmp.wa.gov.au or go to www.dmp.wa.gov.au/training.

Industry seminars

These industry-related seminars may be of interest:

Subscribe to Fieldnotes

Fieldnotes is a quarterly publication released by GSWA to provide the State's exploration industry and other geoscientists with an update on our latest work and ongoing programs. The publication provides updates on other GSWA products and services and is available free from the Information Centre located on the first floor of Mineral House, 100 Plain Street, East Perth 6004. Find past issues of Fieldnotes or subscribe to receive a hard copy by emailing publications@dmp.wa.gov.au.

Access GSWA products

You can download maps, reports, and digital information free of charge from our website.

Click on these links to take you to the download page for that product:

Hard copies

Hard copy publications are also available to purchase from the eBookshop or the First Floor counter at Mineral House, 100 Plain Street, East Perth, WA 6004.

Contact us

For information on publications, email publications@dmp.wa.gov.au
or telephone +61 8 9222 3459/ fax +61 8 9222 3444.

For information on digital data, email the Digital Data Administrator on gsd.dda@dmp.wa.gov.au
or telephone +61 8 9222 3816.

Physical address

Perth
Mineral House
100 Plain Street
East Perth WA 6004
www.dmp.wa.gov.au/gswa

Kalgoorlie
Joe Lord Core Library
Corner Broadwood and Hunter Streets
West Kalgoorlie
+61 8 9022 0410
corelibrary.requests@dmp.wa.gov.au

For more information about GSWA and its products, go to our website.