Authors / CoAuthors
Brodie, R.
Abstract
MinEx CRC Mundi Airborne Electromagnetic Survey, NSW, 2021: XCITE® AEM data and conductivity estimates The package contains processed data from the “MinEx CRC Mundi Airborne Electromagnetic Survey” that was flown over the Curnamona Orogen and overlying Eromanga and Lake Eyre basins, north of Broken Hill, in Western New South Wales. The 2,940 line regional survey was flown east-west at 2.5 km nominal line spacing in 2021 by New Resolution Geophysics Pty Ltd (NRG) using the XCITE® airborne electromagnetic system. The Geological Survey of New South Wales commissioned the survey as part of the MinEx Cooperative Research Centre’s (MinEx CRC) National Drilling Initiative (NDI), the world’s largest mineral exploration collaboration. It brings together industry, government, research organisations and universities to further our understanding of geology, mineral deposits and groundwater resources in areas where rocks aren’t exposed at earth’s surface. The Geological Survey of New South Wales is a major participant in the NDI program, committing $16 million to the program over 10 years. In NSW, the program focuses on five areas in the state’s central and far west, where metallic minerals potentially exist under a layer of younger barren geology. These areas are North Cobar, South Cobar, Broken Hill (Mundi), Forbes and Dubbo. Geoscience Australia is also a major participant in the NDI, committing $50 million Australia-wide over the ten years of the MinEx CRC. Geoscience Australia partly funded the survey by providing funds for an additional 940 line kilometres of data acquisition to broaden the geographical reach of the survey under the Exploring for the Future Darling-Curnamona-Delamerian Project. Additionally, Geoscience Australia provided in-kind support to the project by managing the survey data acquisition and processing, undertaking the quality control of the survey and generating one of the two inversions and associated derived products that are included in the data package. The data release package comntains 1. A data release package summary PDF document. 2. The survey logistics and processing report and XCITE® system specification files 3. ESRI shape files for the flight lines and boundary 4. KML (Google Earth) files of the flight lines 5. Final processed point located dB/dt electromagnetic, magnetic and elevation data - in ASEG-GDF2 format - in Geosoft GDB format 6. Final processed point located BField electromagnetic, magnetic and elevation data - in ASEG-GDF2 format - in Geosoft GDB format 7, Multiplots -graphical (PDF) multiplot profiles and estimated conductivity sections (NRG inversion) for each flight line 8. Conductivity estimates generated by NRG’s inversion -point located line data output from the inversion in ASEG-GDF2 format -point located line data output from the inversion in Geosoft GDB format -graphical (JPEG) multiplot conductivity sections and profiles for each line -georeferenced (PNG) conductivity sections (suitable for pseudo-3D display in a 2D GIS) -GoCAD™ S-Grid 3D objects (suitable for various 3D packages) -Curtain image conductivity sections (suitable 3D display in GA’s EarthSci) -grids generated from the NRG inversion in ER Mapper® format (layer conductivities, depth slices, elevation slices) -georeferenced TIFF images generated from the grids above with accompaning world files for georegerencing (layer conductivities, depth slices, elevation slices) -images generated from the grids above (layer conductivities, depth slices, elevation slices) 9. Conductivity estimates generated by Geoscience Australia's inversion -point located line data output from the inversion in ASEG-GDF2 format -graphical (JPEG) multiplot conductivity sections and profiles for each line -georeferenced (PNG) conductivity sections (suitable for pseudo-3D display in a 2D GIS) -GoCAD™ S-Grid 3D objects (suitable for various 3D packages) -Curtain image conductivity sections (suitable 3D display in GA’s EarthSci) -grids generated from the NRG inversion in ER Mapper® format (layer conductivities, depth slices, elevation slices) -georeferenced TIFF images generated from the grids above with accompaning world files for georegerencing (layer conductivities, depth slices, elevation slices) -images generated from the grids above (layer conductivities, depth slices, elevation slices) Directory structure ├── report ├── shapefiles ├── kml ├── line_data_dbdt ├── line_data_bfield ├── multiplots ├── contractor_inversion │ ├── multiplot_sections │ ├── earthsci │ │ └── Contractor-Inversion │ │ ├── jpeg │ │ ├── geometry │ │ └── MinEx_CRC_Mundi_AEM_Contractor-Inversion │ ├── georef_sections │ ├── gocad_sgrids │ ├── grids │ │ ├── layers │ │ ├── depth_slice │ │ └── elevation_slice │ ├── images │ │ ├── layers │ │ ├── layers_northwest_sunangle │ │ ├── depth_slice_northwest_sunangle │ │ ├── depth_slice │ │ ├── elevation_slice │ │ └── elevation_slice_northwest_sunangle │ ├── line_data │ │ ├── geosoft │ │ └── aseggdf2 │ └── georef_images │ ├── layers_northwest_sunangle │ ├── layers │ ├── depth_slice │ ├── depth_slice_northwest_sunangle │ ├── elevation_slice_northwest_sunangle │ └── elevation_slice ├── ga_inversion ├── georef_sections ├── gocad_sgrids ├── grids │ ├── depth_slice │ ├── layers │ └── elevation_slice ├── images │ ├── layers │ ├── layers_northwest_sunangle │ ├── depth_slice │ ├── elevation_slice_northwest_sunangle │ ├── elevation_slice │ └── depth_slice_northwest_sunangle ├── multiplot_sections ├── line_data ├── earthsci │ └── GA-Inversion │ ├── geometry │ ├── jpeg │ └── MinEx_CRC_Mundi_AEM_GA-Inversion └── georef_images ├── layers ├── layers_northwest_sunangle ├── depth_slice_northwest_sunangle ├── depth_slice ├── elevation_slice └── elevation_slice_northwest_sunangle
Product Type
dataset
eCat Id
145897
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
- Contact instructions
- MEG
Resource provider
Keywords
- theme.ANZRC Fields of Research.rdf
-
- GeophysicsElectrical and electromagnetic methods in geophysicsEARTH SCIENCES
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- Published_External
Publication Date
2021-10-20T01:27:58
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
The data and derived inversion products package are intended for use by land and water managers and exploration industry stakeholders.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
The fundamental data were acquired and processed by New Resolution Geophysics Pty Ltd. Data were reviewed for quality and release by Ross Brodie of Geoscience Australia. The Geoscience Australia Inversion component of the package and the derived products were compiled by Ross Brodie of Geoscience Australia.
Parent Information
Extents
[-32.075, -30.60, 141.00, 141.71]
Reference System
GDA94 (EPSG:4283) GDA94 / MGA zone 54 (EPSG:28354)
Spatial Resolution
Service Information
Associations
Downloads and Links
Data Package Summary Document (pdf) [592 KB]
Survey Operations and Processing report [4.7 MB]
Flight line shape files for the survey [823 KB]
Flight line KML files for the survey [548 KB]
dB/dt ASEGGDF2 ASCII line data [3.4 GB]
dB/dt Geosoft GDB database [11 GB]
BField ASEGGDF2 ASCII line data [3.8 GB]
BField Geosoft GDB database [11 GB]
Graphical multi-plots [3.7 GB]
Contractor inversion results and follow-on derived section, grid and image products [438 MB]
Geoscience Australia’s inversion results and follow-on derived section, grid and image products [531 MB]
Source Information