My GeoNetwork catalogue
Opaque Index
The National ASTER Map of Australia is the parent datafile of a dataset that comprises a set of 14+ geoscience products made up of mosaiced ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) scenes across Australia.
ASTER calibration, processing and standardisation approaches have been produced as part of a large multi-agency project to facilitate uptake of these techniques and make them easily integrated with other datasets in a GIS.
Collaborative research, undertaken by Geoscience Australia, the Commonwealth Scientific Research Organisation (CSIRO) and state and industry partners, on the world-class Mt Isa mineral province in Queensland was completed in 2008 as a test-case for these new methods.
For parent datafile information, see the dataset record: http://pid.geoscience.gov.au/dataset/ga/74347
Band ratio: B1/B4
- Blue is low abundance,
- Red is high abundance
(potentially includes carbon black (e.g. ash), magnetite, Mn oxides, and sulphides in unoxidised environments)
Useful for mapping:
(1) magnetite-bearing rocks (e.g. BIF);
(2) maghemite gravels;
(3) manganese oxides;
(4) graphitic shales.
Note: (1) and (4) above can be evidence for “reduced” rocks when interpreting REDOX gradients.
Combine with AlOH group Content (high values) and Composition (high values) products, to find evidence for any invading “oxidised” hydrothermal fluids which may have interacted with reduced rocks evident in the Opaques index product.
For 'Opaque Index' dataset information, see the dataset record: http://pid.geoscience.gov.au/dataset/ga/74354
For service status information, see https://status.dea.ga.gov.au
Simple
Identification info
- Status
Point of contact
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- As needed
- Keywords (Theme)
-
- mangrove
- australia
- geomedian
- WOfS
- time-series
- landsat
- HLTC
- bare-earth
- burn characteristics
- NIDEM
- fractional-cover
- Keywords (Place)
-
- World
Resource constraints
- Access constraints
- Other restrictions
- Other constraints
- no conditions apply
Resource constraints
- Use limitation
- no conditions apply
Resource constraints
- Use limitation
- https://creativecommons.org/licenses/by/4.0
- Access constraints
- Licence Unrestricted
- Use constraints
- Licence Unrestricted
- Language
- English
- Character encoding
- UTF8
Distribution Information
- OnLine resource
-
aster_opaque_index
Opaque Index
Resource lineage
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
- urn:uuid/27fc9d0792e29ff0f096dbd0467fa6b009027725
- Language
- English
- Character encoding
- anyValidURI
Point of contact
Point of contact
Type of resource
- Resource scope
- Dataset
Metadata linkage
- Function
- Complete Metadata
- Metadata linkage
- http://portal.auscope.org/geonetwork/srv/api/records/177abe2c-9efe-4fd2-a66e-0f1e099c3047
- Date info (Revision)
- 2022-10-25T02:20:38
- Date info (Creation)
- 2024-01-22T22:38:20
Metadata standard
- Title
- ISO 19115-3
Overviews
Spatial extent
Provided by
