Data

Major Crustal Boundaries of Australia - 2024 Edition

Geoscience Australia
Doublier, M. ; Korsch, R.J.
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/149663&rft.title=Major Crustal Boundaries of Australia - 2024 Edition&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/149663&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=The ‘Major crustal boundaries of Australia’ data set synthesises more than 40 years of acquisition of deep seismic reflection data across Australia, where major crustal-scale breaks, often inferred to be relict sutures between different crustal blocks, have been interpreted in the seismic reflection profiles. The widespread coverage of the seismic profiles now provides the opportunity to construct a map of major crustal boundaries across Australia. Starting with the locations of the crustal breaks identified in the seismic profiles, geological (e.g. outcrop mapping, drill hole, geochronology, isotope) and geophysical (e.g. gravity, aeromagnetic, magnetotelluric, passive seismic) data are used to map the crustal boundaries, in map view, away from the seismic profiles. For some of these boundaries, a high level of confidence can be placed on the location, whereas the location of other boundaries can only be considered to have medium or low confidence. In other areas, especially in regions covered by thick sedimentary successions, the locations of some crustal boundaries are essentially unconstrained. The ‘Major crustal boundaries of Australia’ map shows the locations of inferred ancient plate boundaries, and will provide constraints on the three dimensional architecture of Australia. It allows a better understanding of how the Australian continent was constructed from the Mesoarchean through to the Phanerozoic, and how this evolution and these boundaries have controlled metallogenesis. It is best viewed as a dynamic dataset, which will need to be refined and updated as new information, such as new seismic reflection data, becomes available.Maintenance and Update Frequency: asNeededStatement: Major crustal-scale breaks, often inferred to be relict sutures between different crustal blocks, have been interpreted in seismic reflection profiles. The widespread coverage of the seismic profiles now provides the opportunity to construct a map of major crustal boundaries across Australia. Starting with the locations of the crustal breaks identified in the seismic profiles, geological (e.g. outcrop mapping, drill hole, geochronology, isotope) and geophysical (e.g. gravity, aeromagnetic, magnetotelluric) data are used to map the crustal boundaries, in map view, away from the seismic profiles. This dataset represents an update of the Major Crustal Boundaries of Australia 2015 edition (eCat 83223).&rft.creator=Doublier, M. &rft.creator=Korsch, R.J. &rft.date=2024&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / geographic 2D (EPSG: 4283)&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / geographic 2D (EPSG: 4283)&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=(c) Commonwealth of Australia (Geoscience Australia) 2024&rft_rights=Australian Government Security Classification System&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security Classification System&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=EFTF – Exploring for the Future&rft_subject=ARF - Australia's Resources Framework&rft_subject=Major Crustal Boundaries&rft_subject=seismic interpretation&rft_subject=crustal architecture&rft_subject=crustal evolution&rft_subject=national dataset&rft_subject=Structural geology and tectonics&rft_subject=Seismology and seismic exploration&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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(c) Commonwealth of Australia (Geoscience Australia) 2024

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Brief description

The ‘Major crustal boundaries of Australia’ data set synthesises more than 40 years of acquisition of deep seismic reflection data across Australia, where major crustal-scale breaks, often inferred to be relict sutures between different crustal blocks, have been interpreted in the seismic reflection profiles. The widespread coverage of the seismic profiles now provides the opportunity to construct a map of major crustal boundaries across Australia. Starting with the locations of the crustal breaks identified in the seismic profiles, geological (e.g. outcrop mapping, drill hole, geochronology, isotope) and geophysical (e.g. gravity, aeromagnetic, magnetotelluric, passive seismic) data are used to map the crustal boundaries, in map view, away from the seismic profiles. For some of these boundaries, a high level of confidence can be placed on the location, whereas the location of other boundaries can only be considered to have medium or low confidence. In other areas, especially in regions covered by thick sedimentary successions, the locations of some crustal boundaries are essentially unconstrained.
The ‘Major crustal boundaries of Australia’ map shows the locations of inferred ancient plate boundaries, and will provide constraints on the three dimensional architecture of Australia. It allows a better understanding of how the Australian continent was constructed from the Mesoarchean through to the Phanerozoic, and how this evolution and these boundaries have controlled metallogenesis. It is best viewed as a dynamic dataset, which will need to be refined and updated as new information, such as new seismic reflection data, becomes available.

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Maintenance and Update Frequency: asNeeded
Statement:
Major crustal-scale breaks, often inferred to be relict sutures between different crustal blocks, have been interpreted in seismic reflection profiles. The widespread coverage of the seismic profiles now provides the opportunity to construct a map of major crustal boundaries across Australia. Starting with the locations of the crustal breaks identified in the seismic profiles, geological (e.g. outcrop mapping, drill hole, geochronology, isotope) and geophysical (e.g. gravity, aeromagnetic, magnetotelluric) data are used to map the crustal boundaries, in map view, away from the seismic profiles. This dataset represents an update of the Major Crustal Boundaries of Australia 2015 edition (eCat 83223).

Notes

Purpose
Digital GIS dataset showing an interpretation of the Major Crustal Boundaries of Australia.

Created: 15 06 2024

Issued: 05 07 2024

Data time period: 2024-06-30 to 2026-06-30

This dataset is part of a larger collection

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154,-9 154,-44 112,-44 112,-9 154,-9

133,-26.5

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / geographic 2D (EPSG: 4283)

Subjects
ARF - Australia's Resources Framework | EFTF – Exploring for the Future | Major Crustal Boundaries | Published_External | Seismology and seismic exploration | Structural geology and tectonics | crustal architecture | crustal evolution | geoscientificInformation | national dataset | seismic interpretation |

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