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

Created 25/06/2017

Updated 11/08/2023

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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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Title Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC09, located in the Capricorn Channel
Language English
Licence Creative Commons Attribution 2.5 Australia
Landing Page https://data.gov.au/data/dataset/75b7621d-f56b-4fb4-988f-9869471bf490
Contact Point
National Institute of Water and Atmosphere (NIWA)
h.bostock@niwa.co.nz
Reference Period 25/06/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Data.gov.au