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Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC13, collected from the Capricorn Channel.

Created 13/03/2025

Updated 13/03/2025

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A gravity core (GC13) was collected from a depth of 1482 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 ~90cm into the core. Two samples were collected for X-ray Diffraction (XRD) analysis; from the sediment surface (GC13-0) representing interglacial sediment, while the second sample, from 90cm (GC13-90) represents glacial sediment. XRD analysis of these samples show a slight increase in carbonate percentage during the interglacial compared to the glacial, with increased clay and quartz during the glacial. During the interglacial there are minor amounts of Mg calcite, which suggests that there is little influence from the reef platform on the sediments during the present sea-level, or that the core is presently below the Mg calcite compensation depth.

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Title Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC13, collected from the Capricorn Channel.
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/b53b9c3b-f9cd-4509-8a69-fa3909c49bb6
Contact Point
CSIRO Oceans & Atmosphere
h.bostock@niwa.co.nz
Reference Period 01/01/1997 - 01/01/1997
Geospatial Coverage {"type": "Polygon", "coordinates": [[[154.0, -24.0], [154.5, -24.0], [154.5, -23.5], [154.0, -23.5], [154.0, -24.0]]]}
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 GC13, 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-10

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