Product catalogue
Sedimentary geochemical record of the middle Mesoproterozoic―early Neoproterozoic tectonic geography of Northern Australia
The Beetaloo Sub-basin, northern Australia, is considered the main depocentre of the 1000 km-scale Mesoproterozoic Wilton package of
the greater McArthur Basin. The ca. 1.40-1.31 Ga upper Roper Group and the latest Mesoproterozoic to early Neoproterozoic unnamed group of the Beetaloo Sub-basin, together, record ca. 500-million-years of depositional history within the North Australia Craton. Whole-rock shale Sm-Nd and Pb isotope data reveal a dynamic interaction between sedimentary provenance and ancient tectonic geography. The ca. 1.35-1.31 Ga Kyalla Formation of the upper Roper Group is composed of isotopically evolved sedimentary detritus, whereas the upper portions of this formation contain more isotopically juvenile compositions. The increase in juvenile compositions also coincides with elevated total organic carbon (TOC) and phosphorous (P) content of these sediments, which are thought to reflect an increase in nutrient supply associated with the weathering of basaltic sources. Possible, relatively juvenile, basaltic sources include the Wankanki Supersuite in the western Musgraves and the Derim Derim-Galiwinku large igneous province (LIP). The transition into juvenile, basaltic sources directly before a supersequence-bounding unconformity, is here interpreted to reflect uplift and erosion of the Derim Derim-Galiwinku LIP, rather than an influx of southern, Musgrave sources. A new baddeleyite crystallization age of 1312.9 ± 0.7 Ma provides both a tight constraint on the age of this LIP, along with its associated magmatic uplift, as well as providing a minimum age constraint for Roper Group deposition. The supra-Roper Group lower and upper Jamison sandstones were both sourced from the Musgrave Province, at least 300 million years after deposition of the Kyalla Formation. An up-section increase in isotopically juvenile compositions seen in these rocks, are
interpreted to document the continuous exhumation of the western Musgrave Province. The overlying Hayfield mudstone received detritus from both the Musgrave and Arunta regions, and its isotopic geochemistry reveals affinities with other early Neoproterozoic basins (e.g. Amadeus, Victoria and Officer basins), indicating the potential for inter-basin correlations.
Simple
Identification info
- Date (Creation)
- 2019-05-26T00:00:00
- Date (Publication)
- 2020-04-28T04:02:32
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/129439
- Cited responsible party
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Role Organisation / Individual Name Details Author Yang, B.
Author Collins, A.S.
Author Cox, G.M.
Author Jarrett, A.J.M.
Author Denyszyn, S.
Author Blades, M.L.
Author Farkas, J.
Author Glorie, S.
- Purpose
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Manuscript
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Jarrett, A.J.M.
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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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
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EARTH SCIENCES
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- Keywords
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Beetaloo Sub-basin
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- Keywords
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large igneous province
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- Keywords
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Mesoproterozoic to Neoproterozoic shales
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Link to article
Link to article
- Distribution format
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html
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Resource lineage
- Statement
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Not applicable
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/621b782c-5a0b-4e61-9856-95ec71c05461
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Jarrett, A.J.M.
Type of resource
- Resource scope
- Document
- Name
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GA publication: External publication
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/129439
- Date info (Creation)
- 2019-04-08T01:55:29
- Date info (Revision)
- 2019-04-08T01:55:29
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/128040