Sediment Cores Beneath Amery Ice Shelf

Two sediment cores collected from beneath the Amery Ice Shelf in East Antarctica describe physical sedimentation patterns. The Australian Ocean Data Network published this data, which includes lithology, 14C surface ages, absolute diatom abundance, and diatom assemblage indicators. The dataset supports analysis of sediment transport pathways beneath an ice shelf.

Use Cases

• Analyze sediment transport pathways using lithology, 14C surface ages, and diatom assemblage data.
• Contrast basal freezing (AM01b core) and basal melting (AM02 core) sites using core lithology and composition.
• Model sub-ice shelf circulation by comparing sediment indicator pathways with previous basal melt/freeze models.
• Investigate Holocene siliceous muddy ooze sedimentation and interbedded siliciclastic intervals in core AM01b.

Strengths

• Two distinct sediment cores (AM01b and AM02) from contrasting basal conditions.
• Includes multiple data indicators: lithology, 14C ages, absolute diatom abundance, and diatom assemblages.
• Cores provide a Holocene temporal context with a basal age of approximately 28,250 years BP for AM01b.

Limitations

• Small sample size of only two sediment cores limits spatial representativeness.
• Potential data contamination indicated for the basal age of core AM01b.
• Specific row counts, column details, and sample data are unavailable.

Provenance

Source

Australian Ocean Data Network

Collection Method

Sediment cores collected from beneath the Amery Ice Shelf, East Antarctica.

Time Range

Holocene, with a basal age of approximately 28,250 years BP for core AM01b.

Freshness

null

Geography

Beneath the Amery Ice Shelf, East Antarctica.