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Metamorphic evolution of Australia  


Authors / CoAuthors

Goscombe, B. | Czarnota, K. | Blewett, R.S. | Skirrow, R.G. | Everard, J.L. | Lawson, C.

Abstract

Metamorphic rocks provide a semi-continuous record of the thermal and barometric history of the crust, which is particularly useful in constraining paleo-crustal architectures, tectonic models and thereby mineral exploration. Given this importance, regional metamorphic studies in Australia have flourished during the past 30 years. However, the national metamorphic map of Australia has not been updated in more than 37 years. Here, we provide a snapshot of a national synthesis of all available quantitative metamorphic data, metamorphic chronology and metamorphic map patterns, integrated with stratigraphic, magmatic and kinematic datasets. Forty-eight orogenic cycles have been identified, spanning from the Paleoarchean to the Miocene, and most of permissible pressure (P) and temperature (T) space, indicating a wide variety of tectonic settings. This compilation provides a basis for establishing best-estimate working models for the metamorphic evolution of all orogenic systems, provinces and terranes. These insights are important in advancing the understanding of mineral systems in Australia.. <b>Citation:</b> Goscombe, B., Czarnota, K. Blewett, R.S. Skirrow, R.G. Everard, J.L. and Lawson, C., 2020. Metamorphic evolution of Australia. In: Czarnota, K., Roach, I., Abbott, S., Haynes, M., Kositcin, N., Ray, A. and Slatter, E. (eds.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, 1–4.

Product Type

document

eCat Id

140088

Contact for the resource

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

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  Resource provider

 

Digital Object Identifier

http://dx.doi.org/10.11636/140088

Keywords

theme.ANZRC Fields of Research.rdf
  • EARTH SCIENCES
( Project )
  • Exploring for the Future
( Project )
  • EFTF
( Discipline )
  • Metamorphism
( Discipline )
  • Geodynamics
( Theme )
  • Crust
  • map
  • pressure
  • temperature
  • Published_External

Publication Date

2020-06-30T05:15:42

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

completed

Purpose

Summarises the purpose and progress of the Australian Metamorphic Project as part of the Exploring for the Future program which seeks to update the national metamorphic map of Australia.

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

This work is a summary of a new compilation of constraints on the metamorphic grade and evolution of Australia. This work builds on multiple syntheses in particular the metamorphic map of Australia by Vallance T. G., et al., 1983. Metamorphic map of Australia, 1:5,000,000 scale, 1st edn., Bureau of Mineral Resources, Canberra. The metamorphic map of Australia is based on a synthesis of all publically available metamorphic datasets from geological surveys and academic literature. This contribution summarises progress of this multiyear project.

Parent Information

Extents

[-56.00, -10.00, 112.00, 160.00]

Reference System

Spatial Resolution

1:2.5 Million

Service Information

Associations

Downloads and Links

Extended Abstract for download (pdf) [20.4 MB]  

Source Information



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