Australian continental-scale multilayered chronostratigraphic interpretation of airborne electromagnetics  


Authors / CoAuthors

Wong, S. | Roach, I. | Connors, K. | Vilhena, J. | Pitt, L. | Nicoll, M. | Hope, J. | Bonnardot, M. | Brodie, R. | LeyCooper, Y.

Abstract

<div> A key issue for explorers in Australia is the abundant sedimentary and regolith cover obscuring access to underlying potentially prospective rocks. &nbsp;Multilayered chronostratigraphic interpretation of regional broad line-spaced (~20&nbsp;km) airborne electromagnetic (AEM) conductivity sections have led to breakthroughs in Australia’s near-surface geoscience. &nbsp;A dedicated/systematic workflow has been developed to characterise the thickness of cover and the depth to basement rocks, by delineating contact geometries, and by capturing stratigraphic units, their ages and relationships. &nbsp;Results provide a fundamental geological framework, currently covering 27% of the Australian continent, or approximately 2,085,000&nbsp;km2. &nbsp;Delivery as precompetitive data in various non-proprietary formats and on various platforms ensures that these interpretations represent an enduring and meaningful contribution to academia, government and industry.&nbsp;The outputs support resource exploration, hazard mapping, environmental management, and uncertainty attribution.&nbsp;This work encourages exploration investment, can reduce exploration risks and costs, helps expand search area whilst aiding target identification, and allows users to make well-informed decisions. Presented herein are some key findings from interpretations in potentially prospective, yet in some cases, underexplored regions from around Australia.&nbsp;</div> This abstract was submitted & presented to the 8th International Airborne Electromagnetics Workshop (AEM2023) (https://www.aseg.org.au/news/aem-2023)

Product Type

document

eCat Id

147679

Contact for the resource

  Resource provider

 

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

  Point of contact

 

Keywords

( Project )
  • EFTF – Exploring for the Future
( Project )
  • Australia’s Resources Framework
( Project )
  • Australia’s Future Energy Resources
( Project )
  • ARF
( Project )
  • AFER
  • AusAEM interpretation
  • AEM
  • airborne electromagnetics
  • airborne electromagnetics interpretation
  • geophysical interpretation
  • cover thickness
  • depth to basement
  • Minerals
  • Energy
  • Groundwater
  • Basins
theme.ANZRC Fields of Research.rdf
  • Resource geoscienceStratigraphy (incl. biostratigraphysequence stratigraphy and basin analysis)Structural geology and tectonicsSedimentologyGeology not elsewhere classifiedElectrical and electromagnetic methods in geophysicsApplied geophysicsGroundwater hydrology
  • Published_External

Publication Date

2024-01-31T22:54:19

Creation Date

2023-03-03T05:00:00

Security Constraints

Australian Government Security Classification System    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Use - license otherRestrictions

Status

completed

Purpose

Extended Abstract for the AEM 2023 - 8th International Airborne electromagnetic Workshop. This abstract is aimed at promoting Geoscience Australia's pre-competitive airborne electromagnetic interpretation products and presenting some key findings from the interpretation.

Maintenance Information

notPlanned

Topic Category

geoscientificInformation

Series Information

8th International Airborne Electromagnetics Workshop (AEM2023) 4-8 September 2023 Fitzroy Island, QLD

Lineage

<div>The work described in this abstract is based on the multilayered chronostratigraphic interpretation of airborne electromagnetics. These interpretations link to the workflow developed at Geoscience Australia, and the interpretation of airborne electromagnetics across the continent that uses this workflow. The interpreted airborne electromagnetic conductivity sections were acquired by Geoscience Australia in collaboration with state and territory geological surveys, and were inverted using Geoscience Australia's deterministic inversion code.</div>

Parent Information

Extents

[-44, -9, 112, 154]

Reference System

Spatial Resolution

Service Information

Associations

Association Type - wasGeneratedBy

Multilayered chronostratigraphic airborne electromagnetic interpretation workflow    

eCat Identifier - 147251,

UUID - 77ad7de5-c591-4f16-aec5-d34cc44be678

Association Type - wasInformedBy

Canning Basin AusAEM interpretation: hydrogen storage potential and multilayered mapping    

eCat Identifier - 146376,

UUID - 968b4ce2-7055-468c-95d4-cdda65cc5cb8

Association Type - series

AusAEM1 Interpretation Data Package    

eCat Identifier - 145120,

UUID - 430acf3d-cdf6-4a78-abbc-d2f9eae5bf91

Association Type - wasInformedBy

Interpretation of the AusAEM1: insights from the world’s largest airborne electromagnetic survey    

eCat Identifier - 134283,

UUID - 92b3093b-4000-4292-8065-3f146d1baae9

Association Type - series

Canning Basin AusAEM Airborne Electromagnetic Interpretation Data Package    

eCat Identifier - 147597,

UUID - 2b95d02c-ab4b-49a0-b7fb-fc9a3ec31765

Downloads and Links

Link to Conference Page  

Link to Extended Abstract  

Download Presentation (pptx) [72.2 MB]  

Source Information