Abstract

Two nearly orthogonal deep seismic reflection profiles acquired in the northern Stuart Shelf, and centred on the Olympic Dam Fe oxide Cu-U-Au deposit, clearly image the cover successions and the structure of the cratonic basement around the deposit. Along the line of the profiles, sequences of the Pandurra Formation, Adelaide Rift Complex, and the Stuart Shelf have total thicknesses varying from ~300 m to over 6 km. Known upper crustal units of the basement, e.g., Burgoyne batholith, Gawler Range Volcanics, Wallaroo Group, and Donington Granitoid Suite, were also clearly imaged. The mid-crust is dominated by a sub-horizontal, internally packaged, partly mafic layer up to ~5 km thick. The lower crust contains a north-dipping transcrustal shear zone, which does not appear to separate crust identifiable as discrete terranes. However, the lower crust farther to the northeast may be a distinct terrane, as it is relatively homogenous and characterised by sub-horizontal, rather than dipping, reflectivity. The seismic Moho occurs at about 40-42 km depth. The upper crust contains dipping seismic events interpreted as thrust complexes, which may have provided first-order fluid pathways for the minerals system. Excepting orthogneisses of the older Donington Granitoid Suite, the only plutonic body imaged is the Burgoyne batholith of the Hiltaba Suite.
Google map showing geographic bounding box with values North bound -30.0 East bound 137.25 West bound 136.5 South bound -31.0
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Product Type/Sub Type

nonGeographicDataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2005-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

68330 Product http://www.ga.gov.au/metadata-gateway/metadata/record/68330/

Keywords

PowerPoint
mineral exploration
geochemistry
AU-SA
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-30.0
East bound
137.25
West bound
136.5
South bound
-31.0

Lineage

Unknown

Digital Transfer Options

onLine

Distributor

Role
distributor
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Source Description

Source data not available.

Metadata File Identifier

a05f7892-db3b-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
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