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Australasian mid-Tertiary larger foraminiferal associations and their bearing on the East Indian Letter Classification

Created 16/10/2025

Updated 16/10/2025

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Eight larger foraminiferal associations are found in northwest Australia; some can be recognised in other areas of Australia, New Zealand, Papua New Guinea, and Irian Jaya. Correlation with the East Indian Letter Classification can be made for some associations, but there is difficulty with others, owing to the absence of diagnostic forms. Planktic faunas are present in some of the associations, enabling direct correlation with the tropical planktic zonal scheme. In those non-diagnostic associations containing Cycloclypeus or Lepidocyclina (Nephrolepidina), correlation with the East Indian Letter Classification can be achieved using biometric methods. The Tertiary e stage - Tertiary f stage boundary is placed within the N.6-7 zonal interval.

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Field Value
Title Australasian mid-Tertiary larger foraminiferal associations and their bearing on the East Indian Letter Classification
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/1895717d-353c-4d7c-b665-3e64043d1e00
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        113.5,
        -22.75
      ],
      [
        114.5,
        -22.75
      ],
      [
        114.5,
        -21.75
      ],
      [
        113.5,
        -21.75
      ],
      [
        113.5,
        -22.75
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Australasian mid-Tertiary larger foraminiferal associations and their bearing on the East Indian Letter Classification". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/australasian-mid-tertiary-larger-foraminiferal-associations-and-their-bearing-on-the-east-india