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Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC14, collected from the Capricorn Channel.

A gravity core (GC14) was collected from a depth of 2004 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 ~80cm into the core. Two samples were collected for X-ray Diffraction (XRD) analysis; from the sediment surface (GC14-0) representing interglacial sediment, while the second sample, from 80cm (GC14-80) 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.

Data and Resources

Additional Info

Field Value
Title Determining main carbonate mineralogy, and the primary components of the non carbonate fraction, at two depths in core GC14, collected from the Capricorn Channel.
Type Dataset
Language English
Licence Creative Commons Attribution 2.5 Australia
Data Status inactive
Update Frequency notPlanned
Landing Page https://data.gov.au/dataset/d708f461-2170-43d4-af6b-5422f91f0a8b
Date Published 2017-06-24
Date Updated 2017-06-24
Contact Point
National Institute of Water and Atmosphere (NIWA)
h.bostock@niwa.co.nz
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]]]}
Jurisdiction Commonwealth of Australia
Data Portal Australian Oceans Data Network CSW Harvester
Publisher/Agency National Institute of Water and Atmosphere (NIWA)
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