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Geology and mineral deposits of The Granites-Tanami and Tennant Creek Inliers, Northern Territory

The Palaeoproterozoic Tennant Creek Inlier (TCI) and The Granites-Tanami Inlier (GTI) share similarities in their stratigraphy and tectonic evolution. Both are characterised by a sequence of flysch sediments and volcanics that accumulated in an intracratonic transtensional basin which was deformed (D1), metamorphosed and intruded by syn-orogenic I-type granitoids during the Barramundi Orogeny. Fluvial to shallow marine sediments, accompanied by felsic volcanism (plus mafics in the Davenport province) and penecontemporaneous subvolcanic intrusive activity, were deposited unconformably over the early rift sequence. Two episodes of mild deformation (D2 and D3) folded and faulted the sequence to produce basin and dome structures which were subsequently intruded by biotite-muscovite granites. Gold is the most important mineral commodity mined within both the inliers. It is concentrated in deposits which have a regional stratigraphic control (Mount Charles beds- GTI, Warramunga Formation ironstones- TCI) in combination with various structural controls at the local scale. The origin of the Au mineralising fluids is uncertain. Late felsic intrusives associated with the Barramundi Orogeny probably contributed magmatic fluid at the Au-Cu-Bi depositional stage at Tennant Creek, although a significant metamorphic fluid component is also evident. Vein quartz-hosted W, Au, Cu, Bi , U, Ag/Pb mineralisation in the Davenport province is within volcanics and sediments of the Ooradidgee Subgroup, and igneous intrusives (mainly gabbro/dolerite). The metal-bearing hydrothermal fluids are inferred to emanate from post-orogenic two-mica granites.

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Identification info

Date (Publication)
1998-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81505

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Australian Geological Survey Organisation

Canberra
Author

Ferenczi, P.A.

1
Author

Ahmad, M.

2
Name

AGSO Journal of Australian Geology and Geophysics

Issue identification

17:3:19-33

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Role Organisation / Individual Name Details
Custodian

Corp

Owner

Commonwealth of Australia (Geoscience Australia)

Custodian

Commonwealth of Australia (Geoscience Australia)

Voice
Topic category
  • Geoscientific information

Extent

N
S
E
W


Maintenance and update frequency
Unknown

Resource format

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

Keywords
  • NT

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/

Access constraints
License
Use constraints
License

Resource constraints

Title

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

Distribution Information

Distributor contact
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Distributor

Commonwealth of Australia (Geoscience Australia)

Voice
OnLine resource

Journal article (pdf)

Journal article (pdf)

Distribution format
  • pdf

Resource lineage

Statement

Unknown

Hierarchy level
Non geographic dataset
Other

GA Publication

Description

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-71be-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)

Voice

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/81505

Metadata linkage

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

Date info (Revision)
2018-04-20T06:07:03
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

 
 

Spatial extent

N
S
E
W



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