Product catalogue
Moho variations in northern Australia
Constraints on the morphology of the Moho are essential to establish reliable models of the subsurface and infer the evolution of the Australian crust. Reliable information on crustal thickness variations is important for thermal modelling and structural mapping, for both energy and mineral system studies. Here, we combine information from both passive seismic deployments and full-crustal reflection seismic profiling to produce a new representation of the character of the Moho in northern Australia. Data coverage has been dramatically improved by investments, under the Exploring for the Future program, in new deployments of passive seismic instrumentation and expansion of the network of reflection seismic profiles in the South Nicholson and Barkly regions. Using a new approach to combining results from different classes of seismic analysis, different spatial sampling associated with the various types of data have been taken into account. The resulting Moho surface reveals small-scale features not seen in previous models. New data reveal that some Moho discontinuities are clearly associated with known structures such as the Willowra Suture. Similar ~100 km wavelength undulations are visible in areas under cover that may indicate the presence of unknown major structures. Significant base metal mineral deposits appear to be localised along the edges of thicker crustal block.
<b>Citation:</b> Gorbatov, A., Medlin, A., Kennett, B.L.N., Doublier, M.P., Czarnota, K., Fomin, T. and Henson, P., 2020. Moho variations in northern 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.
Simple
Identification info
- Date (Creation)
- 2020-04-01
- Date (Publication)
- 2020-06-30T08:00:12
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/135179
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.11636/135179
- Cited responsible party
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Role Organisation / Individual Name Details Author Gorbatov, A.
Author Medlin, A.
Author Kennett, B.L.N.
Author Doublier, M.P.
Author Czarnota, K
Author Fomin, T.
Author Henson, P.
- Purpose
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EFTF Extended Abstract
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Author Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Gorbatov, A.
Resource provider Minerals, Energy and Groundwater Division
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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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
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Project
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EFTF
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- Stratum
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Moho
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- Place
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northern Australia
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- Keywords
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upper mantle
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- Keywords
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fault
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- Keywords
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deposit
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- Keywords
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crustal blocks
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- Keywords
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Exploring for the Future
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- Keywords
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Crust
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Moho surface (asc) [63 KB]
Moho surface (asc) [63 KB]
- Distribution format
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asc
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- OnLine resource
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Extended Abstract for download (pdf) [1 MB]
Extended Abstract for download (pdf) [1 MB]
- Distribution format
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pdf
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Resource lineage
- Statement
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This northern Australia Moho model updates the Moho map of Australia by Salmon et al. (2013) using analysis from the Exploring for the Future AusArray and deep reflection seismic profiling datasets.
Salmon M., Kennett B. L. N., Stern T. & Aitken A. R. A., 2013. The Moho in Australia and New Zealand. Tectonophysics 609:288–98.
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/ca691ace-7b44-49bc-b78a-1d1c8d1367c9
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Gorbatov, A.
Type of resource
- Resource scope
- Document
- Name
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GA publication: Extended Abstract
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/135179
- Date info (Creation)
- 2019-04-08T01:55:29
- Date info (Revision)
- 2019-04-08T01:55:29
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551