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Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC09, located in the Capricorn Channel

Created 23/06/2025

Updated 23/06/2025

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A gravity core (GC09) was collected from a depth of 166m within the Capricorn Channel, southern Great Barrier Reef (GBR). The data from stable isotopes of Globigerinoides ruber were analysed to allow a preliminary understanding of the hemipelagic sedimentary environment over the last glacial / interglacial cycle. The results suggest that the core reaches the Last Glacial Maximum (LGM) at ~60cm depth, corresponding to isotopically heavier 18O. Other parameters were also analysed to assist in reaching this conclusion. This would give a relatively low sedimentation rate of 3cm / kyr, compared to 50cm / kyr for similar depths in the west Queensland trough.

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Additional Info

Field Value
Title Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC09, located in the Capricorn Channel
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/8af82a25-e88e-4a61-902b-b35ce6c5c61f
Contact Point
Australian Ocean Data Network
h.bostock@niwa.co.nz
Reference Period 01/01/1997 - 01/01/1997
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        151.5,
        -24.5
      ],
      [
        153.0,
        -24.5
      ],
      [
        153.0,
        -23.0
      ],
      [
        151.5,
        -23.0
      ],
      [
        151.5,
        -24.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC09, located in the Capricorn Channel". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/quantifying-the-isotopic-composition-of-oxygen-and-carbon-with-increasing-depth-in-core-gc09-lo1