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Magnetotellurics – Imaging Lithospheric Architecture and Linking to Mineral Potential

The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) is a collaborative national survey that acquires long-period magnetotelluric data on a half-degree grid spacing (approximately 55 km) across the Australian continent. This project aims to map the electrical conductivity/resistivity structure in the crust and mantle beneath the Australian continent. Geoscience Australia has a significant investment in AusLAMP and is a key contributor to the delivery of this national program.


Geoscience Australia, in partnership with State and Northern Territory Geological Surveys, has also undertaken regional-scale MT surveys, along onshore deep reflection seismic transects and in potential mineral and energy provinces across the country. The targeting signal range is 10 KHz – 1000 s, which provide an investigation depth from tens of metres to tens of kilometres. These data provide new insights into basement architecture and resource potential in these regions.


We will present some new models and results from AusLAMP data and regional survey data, showing a remarkable correlation between conductive anomalies, crustal-scale boundaries and the distribution of giant mineral deposits. For example, the Carpentaria Conductivity Anomaly at the eastern margin of the Mount Isa Province characterises the position and geometry of the ancient Gidyea Suture Zone. The distribution of known gold and copper deposits shows a close spatial correlation with the suture zone, indicating that this structure is potentially a fundamental control on IOCG deposits in its vicinity. The implication is that crustal-penetrating structures act as potential pathways for fluid movement to form mineral deposits in the upper crust.


This Abstract was submitted/presented to the Biennial Meeting of the Specialist Group for Tectonics and Structural Geology (SGTSG) and the Specialist Group in Solid Earth Geophysics (SGSEG), Convergence on the Coast, 18-22 November 2019 Port Lincoln, South Australia

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Identification info

Date (Creation)
2019-07-29
Date (Publication)
2023-02-17T01:47:12
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/130503

Identifier

Codespace

Digital Object Identifier

Cited responsible party
Role Organisation / Individual Name Details
Author

Jiang, W.

MEG Internal Contact
Author

Duan, J.

MEG Internal Contact
Author

Kyi, D.

Corporate Division Internal Contact
Name

Biennial Meeting of the Specialist Group for Tectonics and Structural Geology (SGTSG) and the Specialist Group in Solid Earth Geophysics (SGSEG) 18-22 November 2019 Port Lincoln SA

Purpose

Abstract to present at the Specialist Group for Tectonics and Structual Geology (SGTSG) and the Specialist Group in Solid Earth Geophysics, Convergence (SGSEG) on the Coast, 18-22 November 2019

Status
Completed
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

Voice
Point of contact

Jiang, W.

MEG Internal Contact
Resource provider

Minerals, Energy and Groundwater Division

External Contact
Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W


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
  • EARTH SCIENCES

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

Resource lineage

Statement

Abstract presented at the Specialist Group for Tectonics and Structual Geology (SGTSG) and the Specialist Group in Solid Earth Geophysics, Convergence (SGSEG) on the Coast, 18-22 November 2019

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/3e6bb91e-d8a7-4c84-838f-66fb7a359f84

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

Jiang, W.

MEG Internal Contact

Type of resource

Resource scope
Document
Name

Conference Abstracts

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/130503

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/3e6bb91e-d8a7-4c84-838f-66fb7a359f84

Date info (Creation)
2019-07-29T03:05:32
Date info (Revision)
2019-07-29T03:05:32

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/130503

 
 

Spatial extent

N
S
E
W


Keywords

theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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