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Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC10, collected from the Capricorn Channel.

Created 13/03/2025

Updated 13/03/2025

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A gravity core (GC10) was collected from a depth of 335 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). Analysis of other parameters revealed the Last Glacial Maximum (LGM) sitting at a depth of ~130cm into the core. Three samples were collected for X-ray Diffraction (XRD) analysis; at the sediment surface (GC10-0) representing interglacial sediment, 100cm depth (GC10-100) and 270cm (GC10-270) - both of which represent glacial sediment. XRD analysis shows that during the interglacials aragonite increases relative to calcite, presumably as a result of shelf carbonate transported down the channel. During the glacials there is a higher percentage of quartz and feldspar, but reduced clay content in the non-carbonate fraction. This suggests that the terrigenous fraction is dominant within the sediments, however the energy in the environment is possibly too high for the clays to settle.

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Title Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC10, collected from the Capricorn Channel.
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/825aff54-e9ad-449d-9c4d-cadaa48d4e75
Contact Point
CSIRO Oceans & Atmosphere
h.bostock@niwa.co.nz
Reference Period 01/01/1997 - 01/01/1997
Geospatial Coverage {"type": "Polygon", "coordinates": [[[151.5, -24.5], [153.0, -24.5], [153.0, -23.0], [151.5, -23.0], [151.5, -24.5]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC10, collected from the Capricorn Channel.". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/determining-main-carbonate-mineralogy-and-the-primary-components-of-the-non-carbonate-fraction-11

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