From Australian Oceans Data Network
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Sequence analysis and depositional models of crinoidal limestones, Permian Yessabah Limestone, Manning-Macleay Basin, eastern Australia

Created 29/03/2026

Updated 29/03/2026

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

The Permian Yessabah Limestone, a thick crinoidal limestone unit, appears abruptly in the stratigraphic succession over a large area of the Hastings Block in northeastern New South Wales, disconformably overlying clastic rocks with sharply contrasting facies associations. The formation is part of a thick depositional sequence that began with a major sea-level fall at the end of the Carboniferous. The sea-level fall produced a major basinward shift in facies causing rejuvenation of streams and the deposition of braided-stream gravels in the onshore areas while a mass-movement association, the Parrabel Beds, was deposited offshore in the deep basin (the lowstand systems tract). The Yessabah Limestone was deposited as part of the transgressive systems tract in a shallow-marine high-energy environment as sea level again began to rise. The highstand systems tract then prograded over the Yessabah Limestone in the form of a distal turbidite association , the Warbro Formation and associated units, as sea level reached its maximum. The growth of both crinoids and bryozoa was prolific; their two distinctive faunal assemblages alternately dominated the sea floor, producing thick units of well-washed crinoid-rich limestone followed by a bryozoan-rich unit. As sea level rose, conditions became unsuitable for carbonate deposition and the area was again invaded by clastic sediments, forming a distal turbidite association that prograded across the limestones as part of the highstand systems tract.

Files and APIs

Tags

Additional Info

Field Value
Title Sequence analysis and depositional models of crinoidal limestones, Permian Yessabah Limestone, Manning-Macleay Basin, eastern Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/c9e680dc-bc22-4ab6-8c65-6f802b37a073
Contact Point
Australian Ocean Data Network
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        147.89,
        -32.87
      ],
      [
        153.69,
        -32.87
      ],
      [
        153.69,
        -29.03
      ],
      [
        147.89,
        -29.03
      ],
      [
        147.89,
        -32.87
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Sequence analysis and depositional models of crinoidal limestones, Permian Yessabah Limestone, Manning-Macleay Basin, eastern Australia". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/sequence-analysis-and-depositional-models-of-crinoidal-limestones-permian-yessabah-limestone-ma12