Radiocarbon Ages of Individual Fatty Acids from Ross Sea Sediments

SCIOPS researchers measured the radiocarbon content of individual short-chain fatty acids extracted from Ross Sea surface sediments. The dataset likely contains compound-specific 14C ages for C14, C16, and C18 fatty acids from the upper 15cm of sediment. The study focuses on validating this technique for reconstructing chronologies of Antarctic margin sediments.

Use Cases

• Validate compound-specific radiocarbon analysis for sediment dating based on the described molecular 14C variations.
• Reconstruct chronologies of Antarctic margin sediments based on the radiocarbon ages of fatty acids.
• Assess the accumulation rate of relict organic matter over the last 500 14C years based on the preliminary chronology.
• Compare fatty acid 14C ages to post-bomb dissolved inorganic carbon reservoir ages as described.

Strengths

• Focuses on a specific, novel technique for Antarctic sediment chronology validation.
• Data includes measurements from the upper 15cm of sediment, providing a surfacial profile.
• Analysis covers three specific short-chain fatty acids (C14, C16, and C18).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

SCIOPS via NASA EarthData.

Collection Method

Radiocarbon measurement of solvent-extractable fatty acids from sediment samples.

Time Range

The preliminary chronology suggests coverage of the last 500 14C years.

Freshness

Last updated date is unknown.

Geography

Ross Sea, Antarctica.