Data

Inferred lithospheric mantle metasomatism

Name: Inferred lithospheric mantle metasomatism
Published: 2024

Geoscience Australia

Haynes, M. ; Morfiadakis, A. ; Pincus, J.

Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]

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/149649&rft.title=Inferred lithospheric mantle metasomatism&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/149649&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=Building on the national-scale thermochemical tomographic inversions of Haynes & Afonso (2023), we infer regions of subduction-driven metasomatic alteration within the Australia sub-continental lithospheric mantle. Such regions are inferred on the basis of age-corrected magnesium number anomalies for bulk composition of the lithospheric mantle, and the spatial correlation of these features with electrical conductors. This defines a mappable criteria for mineral system conceptual models focused on the transport of melts from re-enriched upper mantle sources. Mapping this feature through stochastic uncertainty propogation of inferred mantle compositions enables us to quantify the level of agreement in the spatial constraints on the feature. Here, we present a voting map that quantifies the relative presence or absence of such features across Australia under any arbitrary model realisation.Geoscience Australia's Exploring for the Future program provides precompetitive information to inform decision-making by government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. By gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge, we are building a national picture of Australia's geology and resource potential. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia's transition to a low emissions economy, strong resources and agriculture sectors, and economic opportunities and social benefits for Australia's regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight year, $225m investment by the Australian Government.Maintenance and Update Frequency: notPlannedStatement: Magnesium number for the bulk lithospheric mantle is calculated from the thermochemical tomographic inversions of Haynes & Afonso (2023). Spatial anomalies in magnesium number trends are estimated after correcting for the secular evolution of the mantle, based on observed correlations with the Sm-Nd depleted mantle model age dataset of Champion (2013). Spatial coincidence of magnesium number anomalies with mantle penetrating electrical conductors (from Duan, 2024) is used to infer regions of subduction-driven metasomatic alteration relevant to iron oxide copper gold mineralisation. The spatial correlations within the lithospheric composition models of Haynes & Afonso (2023) are estimated via the fitting of variogram models using the GSTools software repository (Müller et al., 2022), and the subsequent variograms are used to undertake a stochastic uncertainty propagation.Citations for the above references can be found in the embedded metadata statement.&rft.creator=Haynes, M. &rft.creator=Morfiadakis, A. &rft.creator=Pincus, J. &rft.date=2024&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=WGS 84 / geographic 2D (EPSG: 4326)&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=WGS 84 / geographic 2D (EPSG: 4326)&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=Australia’s Resources Framework&rft_subject=Lithospheric Geophysics&rft_subject=Mineral Potential Mapping&rft_subject=SCLM&rft_subject=Sub-Continental Lithospheric Mantle&rft_subject=Metasomatism&rft_subject=Thermochemical inversion&rft_subject=Earth Sciences&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

Access data via landing page
https://ecat.ga.gov.au... Access data via landing page
https://ecat.ga.gov.au...

Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

Open Licence view details

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

Australian Government Security Classification System

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

WWW:LINK-1.0-http--link

Australian Government Security Classification System

Access:

Open

Contact Information

Brief description

Building on the national-scale thermochemical tomographic inversions of Haynes & Afonso (2023), we infer regions of subduction-driven metasomatic alteration within the Australia sub-continental lithospheric mantle. Such regions are inferred on the basis of age-corrected magnesium number anomalies for bulk composition of the lithospheric mantle, and the spatial correlation of these features with electrical conductors. This defines a mappable criteria for mineral system conceptual models focused on the transport of melts from re-enriched upper mantle sources. Mapping this feature through stochastic uncertainty propogation of inferred mantle compositions enables us to quantify the level of agreement in the spatial constraints on the feature. Here, we present a voting map that quantifies the relative presence or absence of such features across Australia under any arbitrary model realisation.

Geoscience Australia's Exploring for the Future program provides precompetitive information to inform decision-making by government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. By gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge, we are building a national picture of Australia's geology and resource potential. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia's transition to a low emissions economy, strong resources and agriculture sectors, and economic opportunities and social benefits for Australia's regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight year, $225m investment by the Australian Government.

Lineage

Maintenance and Update Frequency: notPlanned

Statement:

Magnesium number for the bulk lithospheric mantle is calculated from the thermochemical tomographic inversions of Haynes & Afonso (2023). Spatial anomalies in magnesium number trends are estimated after correcting for the secular evolution of the mantle, based on observed correlations with the Sm-Nd depleted mantle model age dataset of Champion (2013). Spatial coincidence of magnesium number anomalies with mantle penetrating electrical conductors (from Duan, 2024) is used to infer regions of subduction-driven metasomatic alteration relevant to iron oxide copper gold mineralisation. The spatial correlations within the lithospheric composition models of Haynes & Afonso (2023) are estimated via the fitting of variogram models using the GSTools software repository (Müller et al., 2022), and the subsequent variograms are used to undertake a stochastic uncertainty propagation.

Citations for the above references can be found in the embedded metadata statement.

Notes

Purpose
Sub-continental lithospheric mantle zones of inferred subduction-driven metasomatism, as a mappable criteria for integration into a national-scale assessment of iron oxide copper gold mineral potential.

Created: 03 05 2024

Issued: 25 06 2024

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=WGS 84 / geographic 2D (EPSG: 4326)

Subjects

User Contributed Tags

Other Information

Download Data (txt tif) [16.9 KB]

uri : https://d28rz98at9flks.cloudfront.net/149649/149649_00_0.zip External Link

Identifiers

DOI : 10.26186/149649
URI : pid.geoscience.gov.au/dataset/ga/149649
global : 48c823ba-fe82-4303-a074-5645526d5808

Similar data you may be interested in: