Merged Magnetic, Radiometric and Elevation Grids for the NTGS Mount Peake-Crawford Survey, 2019

The Northern Territory Geological Survey (NTGS) designed the Mount Peake-Crawford survey to provide high resolution magnetic, radiometric and elevation data in the area. It is anticipated that the data from the survey would help attract explorers into ‘greenfield’ terranes and contribute to the discovery of the next generation of major mineral and energy deposits in the Northern Territory. A total of 120,000 line km of regional data (200m line spacing) and additional infill data (100m line spacing), flown at 60m flight height were acquired during the survey between July and October 2019. The survey was managed by Geoscience Australia.

Various grids were produced from the Mount Peake-Crawford Airborne Magnetic and Radiometric Survey dataset and simultaneously merged into a single grid file. The final grid retains all of the information from the input data and is levelled to the national map compilations produced by Geoscience Australia. The merged grids have a cell size of 20m.

The following merged grids are available in this download:

• Laser-derived digital elevation model grids (m). Height relative to the Australian Height Datum.

• Radar-derived digital elevation model grids (m). Height relative to the Australian Height Datum.

• Total magnetic intensity grid (nT).

• Total magnetic intensity grid with variable reduction to the pole applied (nT).

• Total magnetic intensity grid with variable reduction to the pole and first vertical derivative applied (nT/m).

• NASVD-filtered potassium concentration grid (%).

• NASVD-filtered thorium concentration grid (ppm).

• NASVD-filtered uranium concentration grid (ppm).

Identification info

Date (Creation): 2020-02-27

Date (Publication): 2020-03-30T22:04:53

Citation identifier: Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/134773

Identifier

Codespace: Digital Obejct Identifier

Cited responsible party

Role	Organisation / Individual Name	Details
Author	Poudjom Djomani, Y.

Purpose: Analysis

Status: Completed

Point of contact

Role	Organisation / Individual Name	Details
Point of contact	Commonwealth of Australia (Geoscience Australia)	Voice
Point of contact	Poudjom Djomani, Y.
Resource provider	Minerals, Energy and Groundwater Division

Spatial representation type

Topic category

Geoscientific information

Extent

Maintenance and update frequency: As needed

Resource format

Title: Product data repository: Various Formats

Website: Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

theme.ANZRC Fields of Research.rdf

Magnetism and Palaeomagnetism
EARTH SCIENCES
GEOPHYSICS

Theme

radiometrics

Theme

elevation

Theme

gamma-ray

Place

Northern Territory

Sub-Topic Category

uranium

Sub-Topic Category

thorium

Sub-Topic Category

potassium

Sub-Topic Category

total magnetic intensity

Sub-Topic Category

reduction to the pole

Sub-Topic Category

first vertical derivative

Keywords

Published_External

Resource constraints

Title: Creative Commons Attribution 4.0 International Licence

Alternate title: CC-BY

Edition: 4.0

Website

http://creativecommons.org/licenses/

Access constraints: License

Use constraints: License

Resource constraints

Title: Australian Government Security ClassificationSystem

Edition date: 2018-11-01T00:00:00

Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification: Unclassified

Language: English

Character encoding: UTF8

Distribution Information

Distributor contact

Role	Organisation / Individual Name	Details
Distributor	Commonwealth of Australia (Geoscience Australia)	Voice

OnLine resource: Download the complete data package [1.3 GB]

Download the complete data package [1.3 GB]

Distribution format

OnLine resource: Original point-located data

Original point-located data

Distribution format

html

OnLine resource: Readme file [<1 MB]

Readme file [<1 MB]

Distribution format

OnLine resource: Project report [11.2 MB]

Project report [11.2 MB]

Distribution format

OnLine resource: Merged K percent [176 MB]

Merged K percent [176 MB]

Distribution format

OnLine resource: Merged laser DEM [155 MB]

Merged laser DEM [155 MB]

Distribution format

OnLine resource: Radar DEM [157 MB]

Radar DEM [157 MB]

Distribution format

OnLine resource: Merged Th ppm[171 MB]

Merged Th ppm[171 MB]

Distribution format

OnLine resource: Merged TMI [178 MB]

Merged TMI [178 MB]

Distribution format

OnLine resource: Merged TMI RTP [183 MB]

Merged TMI RTP [183 MB]

Distribution format

OnLine resource: Merged TMI RTP 1VD [188 MB]

Merged TMI RTP 1VD [188 MB]

Distribution format

OnLine resource: Merged U ppm[174 MB]

Merged U ppm[174 MB]

Distribution format

Resource lineage

Statement

Various grids were produced from the Mount Peake-Crawford Airborne Magnetic and Radiometric Survey dataset and simultaneously merged into a single grid file. The final grids retains all of the information from the input data and are levelled to the national map compilations produced by Geoscience Australia, as well as to the Australia-Wide Airborne Geophysical Surveys (AWAGS, Milligan et al., 2009). The merged grids have a cell size of 0.000189 degrees or approximately 20m.

Original point-located data is available from: https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/89885. The final grids were generated from the NTGS dataset using Intrepid v5.6.4 and merged using a process developed within Geoscience Australia referred to as Grid Merge (Minty et al., 2003). The Grid Merge process is implemented in Intrepid software's Grid Merge Tool.

References

Milligan, P.R., Minty, B.R.S., Richardson, M. and Franklin, R., 2009. The Australia-wide Airborne Geophysical Survey accurate continental magnetic coverage. ASEG Extended Abstracts, 2009 (1), 1-9.

Minty, B.R.S., Milligan, P.R., Luyendyk, A.P.J. and Mackey, T., 2003, Merging airborne magnetic surveys into continental-scale compilations. Geophysics, 68 (3), 988-995.

Reference System Information

Reference system identifier: EPSG/GDA94 (EPSG:4283)

Metadata constraints

Title: Australian Government Security Classification System

Edition date: 2018-11-01T00:00:00

Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification: Unclassified

Metadata

Metadata identifier

urn:uuid/d4e073fa-45db-412a-9077-7fac0f04b141

Title: GeoNetwork UUID

Language: English

Character encoding: UTF8

Contact

Role	Organisation / Individual Name	Details
Point of contact	Commonwealth of Australia (Geoscience Australia)	Voice
Point of contact	Poudjom Djomani, Y.

Type of resource

Resource scope: Dataset

Name: Merged Magnetic, Radiometric and Elevation Grids for the NTGS Mount Peake-Crawford Survey, 2019

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier: eCatId/134773

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/d4e073fa-45db-412a-9077-7fac0f04b141

Date info (Creation): 2020-02-27T05:28:48

Date info (Revision): 2020-02-27T05:28:48

Metadata standard

Title: AU/NZS ISO 19115-1:2014

Metadata standard

Title: ISO 19115-1:2014

Metadata standard

Title: ISO 19115-3

Title: Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition: Version 2.0, September 2018

Citation identifier: https://pid.geoscience.gov.au/dataset/ga/134773

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