Origins of sulphide in sediments

Sulphide in sedimentary ore deposits may be derived directly from the mantle or by reduction of sulphate. Sulphide in modem hydrothermal deposits is thought to have formed abiologically by reactions between sulphate and ferrous iron or organic matter during deep circulation of sea water and meteoric waters through the crust at temperatures above about 200°C. Below about 70°C sulphate reduction is catalysed by bacteria. This process is widespread in anoxic basins and reducing sediments, and is dependent upon, and often controlled by, the supply of organic matter. The importance of sulphate reduction in carbon turnover has been demonstrated by comparisons of organic carbon production and sulphate reduction in marine sediments and by the discovery of several genera of sulphate-reducing bacteria capable of using a wide range of organic molecules. Recent kinetic studies of sulphate reduction in anoxic marine sediments have confirmed that sulphide accumulations equivalent to those in several major stratiform ores could be generated biologically. Fixed sulphide contents in normal unconsolidated reduced marine sediments, however, are generally an order of magnitude less than those of deposits such as at McArthur River and Mount Isa in the Northern Territory of Australia. The only modern examples of sediments with large fixed sulphide concentrations are those in which sulphide is of hydrothermal origin. One constraint on the concentration of fixed sulphides in sediments is the availability of reactable metals. It is possible that high concentrations of biogenic sulphides can be produced when metalliferous hydrothermal fluids are exhaled into biologically active anoxic basins or depressions.

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Identification info

Date (Publication)
1981-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81087

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Bureau of Mineral Resources, Geology and Geophysics

 Canberra
Author

Trudinger, P.A.

 1
Name

BMR Journal of Australian Geology and Geophysics

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6:4:279-285

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Owner

Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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Topic category
  • Geoscientific information
Maintenance and update frequency
Unknown

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Title

Product data repository: Various Formats

Website

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

  • GA Publication

  • Journal

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

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License
Use constraints
License

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Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

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

Classification
Unclassified
Language
English
Character encoding
UTF8

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Commonwealth of Australia (Geoscience Australia)

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OnLine resource

Journal article (pdf)

Journal article (pdf)

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Non geographic dataset
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GA Publication

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Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

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

Classification
Unclassified

Metadata

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urn:uuid/fae9173a-701c-71e4-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

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Type of resource

Resource scope
Document
Name

AGSO BMR Journal

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/81087

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-701c-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:07
Date info (Creation)
2014-06-03T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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