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The age of the Mud Tank Carbonatite, Strangways Range, Northern Territory

Created 17/10/2025

Updated 17/10/2025

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Dates of 732 ± 5 m.y. (U-Pb zircon) and 735 ± 75 m.y. (Rb-Sr total rock) define the crystallisation age, and possibly also the emplacement age, of the Mud Tank Carbonatite. Deformation structures in the carbonatite probably formed during resetting of Rb-Sr biotite ages at about 320 m.y. by reactivated fault movement. Feldspathic carbonatite apparently formed by country rock contamination. The Mud Tank Carbonatite differs markedly, both in age and initial Sr87/Sr86 ratio, from the ultrapotassic Mordor Igneous Complex 50 km to the south. The age of the carbonatite does not correspond to any known event in the Arunta Block.

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Additional Info

Field Value
Title The age of the Mud Tank Carbonatite, Strangways Range, Northern Territory
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/449ad00f-6595-44a1-954c-dac86065642a
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        133.5,
        -24.0
      ],
      [
        135.0,
        -24.0
      ],
      [
        135.0,
        -22.5
      ],
      [
        133.5,
        -22.5
      ],
      [
        133.5,
        -24.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "The age of the Mud Tank Carbonatite, Strangways Range, Northern Territory". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/the-age-of-the-mud-tank-carbonatite-strangways-range-northern-territory