Brief description
A gravity core (GC12) was collected from a depth of 990.5 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). The percentage of CaCO3 in samples collected from different depths were analysed, along with other parameters, to determine changes in carbonate mineralogy and terrestrial influx. Levels of CaCO3% exhibit an higher percentage of >60% during the middle of Marine Isotope Stage (MIS) 3, levels similar to those seen in MIS 1. Throughout MIS 2 and during the glacial termination the CaCO3% remains relatively constant at ~60%. CaCO3 drops to 50% prior to a possible Antarctic cold reversal (between 14 ka BP and 12 ka BP) at 80cm in the core, before recovering to the 65-70% in the Holocene again.Lineage
Maintenance and Update Frequency: notPlannedNotes
CreditFunded by The Australian Research Council (ARC)
Funded by The Australian National University (ANU) Faculties Research Grant Scheme
To help determine changes in the carbonate mineralogy and terrestrial influx, which may provide some useful palaeoclimate information. Very little previous work has been undertaken within this area.
Issued: 28 06 2007
Data time period: 1997 to 1997
text: westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23
text: uplimit=990.5; downlimit=990.5
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(ANU_Bostock_GC12_4_data.xls)
global : 442c6f30-2501-11dc-aba4-00188b4c0af8
- global : 031f69c0-251a-11dc-aba4-00188b4c0af8