Deep-Sea Sediment Geochemistry of the Northern Lord Howe Rise

A geochemical characterisation of deep-sea floor sediments from 1300 to 2423 meters water depth on the Lord Howe Rise and Gifford Guyot off eastern Australia. The dataset, provided by the Australian Ocean Data Network, includes analyses of mineralogy, organic carbon and nitrogen, isotopic compositions, and major and trace elements. Surface sediments in the region were carbon-lean calcareous oozes with moderate to high chlorin indices.

Use Cases

• Modeling deep-sea habitats based on sediment geochemical properties.
• Developing biodiversity surrogates using organic matter reactivity indicators like chlorin indices.
• Analyzing the bioavailability of bioactive trace elements from acid-extractable element concentrations.
• Studying regional sediment composition patterns from major and trace element data.

Strengths

• Includes specific geochemical parameters such as chlorin indices ranging from 0.62 to 0.97.
• Reports measured organic carbon content with a value of 0.26±0.1%.
• Covers a defined depth range from 1300 to 2423 meters on a deep-sea plateau and seamount.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Scientific study analyzing sediment samples for geochemical characteristics.

Time Range

null

Freshness

Last updated 2026-04-10 16:43:28.383457; freshness should be verified.

Geography

Lord Howe Rise and Gifford Guyot off eastern Australia.