From data.gov.au
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

National ASTER Map Opaque index

ARCHIVED

Created 20/01/2025

Updated 20/01/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

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 envornments Useful for mapping: (1) magnetite-bearing rocks (e.g. BIF); (2) maghemite gravels; (3) manganese oxides; (4) graphitic shales. Note 1: (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.

Files and APIs

Tags

Additional Info

Field Value
Title National ASTER Map Opaque index
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/f3a10559-d428-4767-9b09-305332aa621e
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 11/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[111.5, -44.5], [155.0, -44.5], [155.0, -9.0], [111.5, -9.0], [111.5, -44.5]]]}
Data Portal data.gov.au