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National ASTER Map TIR Gypsum index

Created 16/10/2025

Updated 16/10/2025

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Band ratio: (B10+B12)/B11 Blue is low gypsum content. Red is high gypsum content. Accuracy: Very Low: Strongly complicated by dry vegetation and often inversely correlated with quartz-rich materials. Affected by discontinuous line-striping. Use in combination with FeOH product which is also sensitive to gypsum. Geoscience Applications: Useful for mapping: (1) evaporative environments (e.g. salt lakes) and associated arid aeolian systems (e.g. dunes); (2) acid waters (e.g. from oxidising sulphides) invading carbonate rich materials including around mine environments; and (3) hydrothermal (e.g. volcanic) systems.

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Additional Info

Field Value
Title National ASTER Map TIR Gypsum index
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/ac76a38e-7efb-409c-be2f-b883b1047d62
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 11/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        111.5,
        -44.5
      ],
      [
        155.0,
        -44.5
      ],
      [
        155.0,
        -9.0
      ],
      [
        111.5,
        -9.0
      ],
      [
        111.5,
        -44.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "National ASTER Map TIR Gypsum index". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/national-aster-map-tir-gypsum-index