From Australian Oceans Data Network

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

Created 13/03/2025

Updated 13/03/2025

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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Title Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC09, located in the Capricorn Channel
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/d77ca4db-b6bf-486d-989a-847b5043379f
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