Product catalogue
The Paleoproterozoic McArthur River (HYC) Pb/Zn/Ag deposit of northern Australia: Organic geochemistry and ore genesis
<p>Polycyclic aromatic hydrocarbons (PAH) in ore and mudstone within the McArthur River ore deposit show compound distributions similar to those of hydrothermally-generated petroleum in the Guaymas Basin and significantly different from those found in conventional oil (Chen et al., submitted). PAH abundances and isomer distribution also reflect a temperature gradient between the source of mineralising fluids and the sediments fringing the ore system during ore formation. Along with other geochemical, geological and mineralogical lines of evidence, these data provide strong evidence that the ore formed in a ?diagenetic? environment under marine conditions. Given that the McArthur River orebody is an exquisitely preserved example of a sediment-hosted base metal deposit, these results may be widely applicable. Organic geochemistry can make significant contributions to understanding processes of ore deposition. The distribution of PAHs suggests that they were generated at temperatures between 250-400?C (Simoneit, pers. comm 2001), in contrast to previous estimates of 150-250?C. This has new and significant implications for ore formation and exploration models. The higher temperature estimates for ore forming brines require a deeper metal source within the basin, and fluid volumes may have been lower because metal carrying capacity increases with temperature. Importantly, at higher temperatures hydrogen sulfide can be transported with the metal ions, indicating that evaporites are not required as a source of sulfur. The McArthur deposit is also a rich repository of paleobiological information, allowing studies of the microbiology of ore formation and the paleobiology of an ancient hydrothermal system (Logan et al., 2001).
<p>Chen J., Walter M.R., Logan G.A., Hinman M.C. and Summons R.E. (submitted) Geology
<p>Logan G.A., Hinman M.C., Walter M.R. and Summons R.E. (2001) Geochim.Cosmochim. Acta 65, 2317-2336.
Simple
Identification info
- Date (Publication)
- 2002-01-01T00:00:00
- Date (Revision)
- 2020-02-16T21:48:48
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/38393
- Cited responsible party
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Role Organisation / Individual Name Details Author Logan, G.A.
Author Chen, J.
Author Walter, M.R.
Author Hinman, M.C.
Author Summons, R.E.
- Point of contact
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Role Organisation / Individual Name Details Custodian PGREENWO
Point of contact Commonwealth of Australia (Geoscience Australia)
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- Topic category
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- Geoscientific information
- Maintenance and update frequency
- Not planned
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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
- Keywords
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External Publication
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Abstract
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- Theme
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geochemistry
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Earth Sciences
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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
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4.0
- Access constraints
- Restricted
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- License
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- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
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- Unclassified
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- English
- Character encoding
- UTF8
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
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- OnLine resource
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Link to article
Link to article
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html
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Resource lineage
- Statement
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Unknown
- Hierarchy level
- Non geographic dataset
- Other
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External Publication
- Description
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Source data not available.
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/a05f7892-b66f-7506-e044-00144fdd4fa6
- 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
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/38393
- Date info (Revision)
- 2018-04-10T09:45:09
- Date info (Creation)
- 2001-11-30T00:00:00
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/122551