Goyder impact structure, Arnhem Land, Northern Territory

A circular structural uplift of 3 kIn diameter in sandstone and mudstone of the Abner Sandstone crops out within the McArthur Basin of central Arnhem Land. Northern Territory, Australia. The surrounding area contains little outcrop, but the strata are believed to be flat-lying to gently dipping. An outer annulus of sand (disintegrated sandstone) contains scattered outcrops of fractured and brecciated sandstone generally striking tangentially to the structure and dipping outwards. Silicified sandstone bearing shatter cones crops out in the radially faulted core of the structure. Petrographic analysis of sandstone and breccia from the central area reveals abundant fracturing, and single and multiple sets of closely spaced parallel planar deformation features in quartz. The orientation of these planar deformation features is consistent with impact-produced shock metamorphism. The structure is interpreted as the remnant of the central uplift of a deeply eroded complex impact crater. The crater rim and floor have been removed by erosion, and considerable uncertainty surrounds the original rim dimensions. Comparisons with other terrestrial impact structures allow for a diameter in the range of 7-25 km. The age of the structure is probably pre-Cretaceous, but it could be as old as the Mesoproterozoic (~1400 Ma) age of the target rocks.

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Date (Publication)
1996-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81462

Cited responsible party
Role Organisation / Individual Name Details
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Australian Geological Survey Organisation

 Canberra
Author

Haines, P.W.

 1
Name

AGSO Journal of Australian Geology and Geophysics

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16:4:561-566

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

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  • Geoscientific information

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Product data repository: Various Formats

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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

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  • GA Publication

  • Journal

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  • NT

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Title

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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Title

Australian Government Security ClassificationSystem

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

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Unclassified
Language
English
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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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  • pdf

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Unknown

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Non geographic dataset
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GA Publication

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Source data not available.

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

Metadata identifier
urn:uuid/fae9173a-7193-71e4-e044-00144fdd4fa6

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GeoNetwork UUID

Language
English
Character encoding
UTF8
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Role Organisation / Individual Name Details
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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/81462

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-7193-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:07:16
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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