Authors / CoAuthors
Abstract
This data collection are comprised of magnetic surveys acquired across Australia by Commonwealth, State and Northern Territory governments and the private sector with project management and quality control undertaken by Geoscience Australia. Magnetic surveying is a geophysical method for measuring the intensity (or strength) of the Earth's magnetic field, which includes the fields associated with the Earth's core and the magnetism of rocks in the Earth's crust. Measuring the magnetism of rocks, in particular, provides a means for the direct detection of several different types of mineral deposits and for geological mapping. The magnetism of rocks depends on the volume, orientation and distribution of their constituent magnetic minerals (namely magnetite, monoclinic pyrrhotite, maghaemite and ilmenite). The instrument used in magnetic surveys is a magnetometer, which can measure the intensity of the magnetic field in nanoteslas (nT). Magnetic surveys in this collection have been acquired using aircraft or ship-mounted magnetometers and are a non-invasive method for investigating subsurface geology.
Product Type
collection
eCat Id
144635
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Resource provider
Point of contact
- Contact instructions
- MEG
Keywords
- theme.ANZRC Fields of Research.rdf
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- GEOPHYSICS
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- HVC_144635
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- HVC - High Value Collection
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- magnetism
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- geomagnetism
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- magnetics
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- total magnetic intensity (TMI)
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- magnetic anomaly
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- magnetic field
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- potential field
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- point located data
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- line data
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- gridded data
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- airborne
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- ship-borne
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- Australia-wide Airborne Geophysical Survey (AWAGS)
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- Geophysics
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- HVC
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- Published_External
Publication Date
2022-09-28T05:09:32
Creation Date
Security Constraints
Legal Constraints
Status
onGoing
Purpose
Magnetic data are primarily used for interpreting the geologic structure of the subsurface and the assessment of groundwater, energy and mineral resource potential.
Maintenance Information
annually
Topic Category
geoscientificInformation
Series Information
Lineage
<b>Source: </b>The data in this collection date back to 1951 when the Bureau of Mineral Resources (BMR) began acquiring airborne magnetic data over onshore Australia. <br /> <br /> <b>Form: </b>The data are point-located (line) or gridded and include metadata and supporting documentation such as operations and processing reports.
Parent Information
Extents
[-54.75, -9.2402, 112.92, 159.11]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information