Wilkes Land Diatom Core Samples for Biogenic Sediment History

Preliminary data details cores processed from the Wilkes Land Glacial History project, including sample intervals, dry weights, and chemical reactions. The dataset, managed by AU_AADC, contains information on cores from the continental shelf and slope regions. It was last updated in March 2001, with future data planned to document observed and counted diatoms.

Use Cases

• Analyze sediment composition by correlating 'dry weight' with 'cm depth' and 'core depth' across different core locations.
• Model paleoenvironmental conditions using chemical reaction data like 'Sol A* reaction' and 'HCL reaction' as proxies for sediment diagenesis.
• Map core sample origins for spatial analysis using provided 'latitude' and 'longitude' coordinates.
• Reconstruct sedimentation rates by examining the relationship between 'bottom depth' and 'cm depth' intervals within cores.

Strengths

• Includes core samples from distinct geological settings: continental shelf (PC7,11,12) and slope (PC19,20,21).
• Contains 10 specific data fields per sample, including geospatial coordinates and chemical properties.

Limitations

• Core diatom count data is not yet available, limiting biological analysis.
• Sample size is unspecified, making statistical significance unclear.
• Data is stale, with no updates since March 2001.

Provenance

Source

AU_AADC (Australian Antarctic Data Centre) for the Wilkes Land Glacial History (WEGA) project.

Collection Method

Silica-selective processing of sediment cores for diatom content, with slides mounted for quantitative assessment.

Freshness

Last updated 2001-03-31; no stated update frequency.

Geography

Wilkes Land region, Antarctica, covering continental shelf and slope areas.