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Stratigraphic significance of a discovery of Lower Proterozoic tuff in the Pine Creek Geosyncline

Created 16/10/2025

Updated 16/10/2025

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Recent investigations in the Pine Creek Geosyncline in the northern part of the Northern Territory have revealed the presence of tuff within the Lower Proterozoic metasediments (Needham and others, 1978). The tuff is confined to one horizon, and crops out in the central and eastern parts of the Geosyncline, enabling stratigraphic correlations to be made between formations previously believed to have been deposited in two separate basins. Previous workers believed different kinds of sediment were laid down in each basin, and that only limited correlation was possible between the basins (Walpole and others, 1968). The regional stratigraphic concept of earlier workers was dominated by lateral and lesser vertical facies inter-fingering of units (formations), which were placed into groups, each of which contained a number of laterally disposed, lithogenetically related formations (Walpole and others, 1968). Tuff, by its depositional nature, is a time-stratigraphic indicator, so its regional conformity with metasedimentary units in the Geosyncline suggests that they are also time-stratigraphic in character, and not facies equivalents or time-transgressive as proposed previously.

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Title Stratigraphic significance of a discovery of Lower Proterozoic tuff in the Pine Creek Geosyncline
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/162af033-cab7-4cde-81d2-a4e8b5157227
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        131.3,
        -13.5
      ],
      [
        132.5,
        -13.5
      ],
      [
        132.5,
        -13.0
      ],
      [
        131.3,
        -13.0
      ],
      [
        131.3,
        -13.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Stratigraphic significance of a discovery of Lower Proterozoic tuff in the Pine Creek Geosyncline". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/stratigraphic-significance-of-a-discovery-of-lower-proterozoic-tuff-in-the-pine-creek-geosyncli