Glacial-Interglacial Paleoceanography from Australian Margin Sediment Cores
Updated 1mo ago
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Description
Sediment cores from the Exmouth Plateau, Perth Basin, and Ceduna Terrace provide evidence of glacial-interglacial changes in surface ocean productivity and deep water chemistry since the Last Glacial Maximum. Data from seven cores in the southeastern Indian Ocean show sediment accumulation rates and biogenic components were 1.5-2 times higher during the LGM (~20,000 years ago) than the Holocene. The dataset, collected by the Australian Geological Survey Organisation and hosted by Geoscience Australia, includes benthic foraminiferal stable isotope records and authigenic uranium concentrations.
Use Cases
Reconstructing past surface ocean productivity based on sediment accumulation rates and biogenic component data.
Analyzing changes in intermediate and deep water chemistry based on benthic foraminiferal stable isotope records.
Comparing glacial-interglacial environmental conditions in the southeastern Indian Ocean based on authigenic uranium concentrations and foraminiferal abundances.
Strengths
Data from 14 distinct sediment cores (7 from EP/PB, 7 from CT) provides a multi-regional perspective.
Specific quantitative findings are reported, such as LGM sediment accumulation rates being 1.5-2 times higher than Holocene rates.
Analysis includes multiple proxy indicators: sediment accumulation, CaCO3, organic carbon, foraminiferal abundances, and authigenic uranium.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data files are in PDF and HTML formats, which may require extraction and structuring for analysis.
Provenance
Source
Australian Geological Survey Organisation / Geoscience Australia Data
Collection Method
Analysis of sediment cores collected from the Australian continental margin.
Time Range
Since the Last Glacial Maximum (~20,000 years ago) through the Holocene.
Freshness
Last updated 2026-05-14 03:49:08.544707; freshness should be verified.
Geography
Exmouth Plateau and Perth Basin (southeastern Indian Ocean off Western Australia) and Ceduna Terrace (Great Australian Bight).
License is unknown; users should verify terms of use before application.