Authors / CoAuthors
Raymond, O.L.
Abstract
A snapshot of the latest interpretation of the basement geology based primarily on airborne geophysics and drillhole logging. The Moonta Domain forms the southern part of the Olympic Cu-Au province on the eastern margin of the Gawler Craton, and underlies most of the Yorke Peninsula and Spencer Gulf. The domain basement comprises metasediments and metavolcanics of the Palaeoproterozoic Wallaroo Group (~1760-1740 Ma) which were deformed and metamorphosed to upper greenschist-amphibolite facies during the Kimban Orogeny (~1720 Ma). These rocks were further deformed and intruded by granitoids and minor mafic intrusions of the Hiltaba Suite between about 1600 Ma and 1575 Ma. The Moonta Domain basement is highly prospective for iron oxide-Cu-Au mineralisation associated with the Hiltaba magmatic event. However outcrop of these basement rocks is limited almost entirely to narrow coastal exposures. The majority of the prospective basement is concealed by up to 100 metres of Neoproterozoic to Quaternary sediments, and geological mapping of the basement is largely limited to interpretation of geophysics (airborne magnetics, gravity, AEM) and drilling.
Product Type
nonGeographicDataset
eCat Id
41916
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
-
- Geological Map250K scale
- ( Theme )
-
- geology
- ( Theme )
-
- geophysics
- ( Theme )
-
- mapping
-
- AU-SA
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
- Geology
-
- Published_External
Publication Date
2002-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
unknown
Topic Category
geoscientificInformation
Series Information
Lineage
Unknown
Parent Information
Extents
[-35.325, -33.444, 136.757, 138.187]
Reference System
Spatial Resolution
Service Information
Associations
Source Information
Source data not available.