Glacial-Interglacial Paleoceanography from Australian Margin Sediment Cores

Geoscience Australia Data provides sediment core data from the Exmouth Plateau, Perth Basin, and Ceduna Terrace off Australia. The dataset includes sediment accumulation rates, biogenic component rates, and benthic foraminiferal stable isotope records, focusing on changes since the Last Glacial Maximum. Data from 14 cores suggest elevated glacial productivity off Western Australia and document deep water chemistry changes in the southeastern Indian Ocean.

Use Cases

• Modeling past surface ocean productivity changes based on sediment accumulation rates and biogenic component data.
• Reconstructing intermediate and deep water chemistry based on benthic foraminiferal stable isotope records.
• Comparing glacial-interglacial climatic conditions in the southeastern Indian Ocean based on the described geochemical proxies.

Strengths

• Data is sourced from 14 sediment cores across two distinct regions of the Australian margin.
• Includes specific quantitative comparisons, such as LGM sediment accumulation rates being 1.5-2 times higher than Holocene rates.
• Provides evidence for regional differences in deep ocean carbon isotope profiles during the Last Glacial Maximum.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in PDF and HTML formats, which may require extraction for analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

Collected from sediment cores by the Australian Geological Survey Organisation.

Time Range

Since the Last Glacial Maximum (roughly 20,000 years ago) through the Holocene.

Freshness

Last updated 2026-04-30 13:15:00.918867; freshness should be verified.

Geography

Northwest Australian margin (Exmouth Plateau, Perth Basin) and Great Australian Bight (Ceduna Terrace).