Authors / CoAuthors
Champion, D.C. | Highet, L. | Buddee, M.
Abstract
Alkaline and related rocks are a relatively rare class of igneous rocks worldwide. Alkaline rocks encompass a wide range of rock types and are mineralogically and geochemically diverse. They are typically though to have been derived by generally small to very small degrees of partial melting of a wide range of mantle compositions. As such these rocks have the potential to convey considerable information on the evolution of the Earth’s mantle (asthenosphere and lithosphere), particularly the role of metasomatism which may have been important in their generation or to which such rocks may themselves have contributed. Such rocks, by their unique compositions and or enriched source protoliths, also have considerable metallogenic potential, e.g., diamonds, Th, U, Zr, Hf, Nb, Ta, REEs. It is evident that the geographic occurrences of many of these rock types are also important, and may relate to presence of old cratons, craton margins or major lithospheric breaks. Finally, many alkaline rocks also carry with them mantle xenoliths providing a snapshot of the lithospheric mantle composition at the time of their emplacement. Accordingly, although alkaline and related rocks comprise only a volumetrically minor component of the geology of Australia, they are of considerable importance to studies of lithospheric composition, evolution and architecture and to helping constrain the temporal evolution of the lithosphere, as well as more directly to metallogenesis and mineralisation.
Product Type
document
eCat Id
146949
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
- Contact instructions
- MEG
Resource provider
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
-
- EARTH SCIENCES
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- Australia
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- Alkaline rocks
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- Igneous rocks
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- EFTF
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- Exploring for the future
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- Published_External
- ( Project )
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- Australia’s Resources Framework
Publication Date
2022-11-11T04:24:44
Creation Date
2022-06-20T09:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
This report documents alkaline and related rocks of Mesozoic age, and is part of an ongoing compilation of the distribution and geology of alkaline and related rocks throughout Australia.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Record RECORD: 2022/038
Lineage
This report and accompanying GIS document alkaline and related rocks of Mesozoic age, and is part of an ongoing compilation of the distribution and geology of alkaline and related rocks throughout Australia.
Parent Information
Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - dependency
Mesozoic Alkaline and related igneous rocks of Australia MapServer
eCat Identifier - 146951,
UUID - d83b70c7-6ef4-4449-aa0f-a8abb1388058
Association Type - dependency
Mesozoic Alkaline and related igneous rocks of Australia WMS
eCat Identifier - 146952,
UUID - e26cd010-2164-40a9-ab86-2acb25414633
Association Type - dependency
Mesozoic Alkaline and related igneous rocks of Australia WFS
eCat Identifier - 146953,
UUID - e63b4771-cd18-4241-94b0-4e87708b4694
Source Information