Mineralogy and chemistry of weathered and parent sedimentary rocks in southwest Queensland

Weathered profiles and parent rocks in the Queensland part of the Eromanga Basin were investigated using geochemical and clay mineral techniques. Approximately 170 rock samples were analysed and 65 thin sections described from Winton and Eyre Formations, Morney profile, Canaway profile, Curalle silcrete profile and Haddon silcrete. Rock samples were obtained by shallow stratigraphic core-drilling and from measured outcrop sections. The results obtained show marked differences, between the parent rocks and weathered profiles, and in some instances demonstrate gradational compositional changes within profiles. The Winton Formation contains montmorillonite with lesser amounts of kaolinite, illite, randomly interstratified clays and chlorite. Weathered profiles developed on it (Morney and Canaway profiles) contain kaolinite and lesser illite. The quartzose Eyre Formation is kaolinitic except for the upper part, in which small amounts of montmorillonite occur. Silcrete developed on this formation (Curalle silcrete profile) and subsurface silcrete (Haddon silcrete) are chemically similar and contain kaolinite, illite, and small quantities of montmorillonite. SiIica-enriched zones of all profiles examined show evidence of slight enrichment of titanium.

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Date (Publication)
1979-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/80992

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Bureau of Mineral Resources, Geology and Geophysics

 Canberra
Author

Senior, B.R.

 1
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BMR Journal of Australian Geology and Geophysics

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4:2:111-124

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

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Product data repository: Various Formats

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  • Journal

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  • QLD

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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http://creativecommons.org/licenses/

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License

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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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English
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UTF8

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Commonwealth of Australia (Geoscience Australia)

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Journal article (pdf)

Journal article (pdf)

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GA Publication

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Title

Australian Government Security ClassificationSystem

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

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

Classification
Unclassified

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Metadata identifier
urn:uuid/fae9173a-6fbd-71e4-e044-00144fdd4fa6

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Language
English
Character encoding
UTF8
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Commonwealth of Australia (Geoscience Australia)

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Document
Name

AGSO BMR Journal

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Geoscience Australia - short identifier for metadata record with

uuid

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eCatId/80992

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-6fbd-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:14
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2014-06-03T00:00:00

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AU/NZS ISO 19115-1:2014

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ISO 19115-1:2014

Metadata standard

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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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