Deep-Sea Sediment Geochemistry of the Lord Howe Rise and Gifford Guyot

Geochemical data from deep-sea floor sediments collected at water depths between 1300 and 2423 meters on the Lord Howe Rise and Gifford Guyot off eastern Australia. The dataset, published by Geoscience Australia, includes analyses of mineralogy, organic carbon and nitrogen concentrations, isotopic compositions, and major and trace elements. Surface sediments in the region were characterized as carbon-lean calcareous oozes.

Use Cases

• Modeling deep-sea habitats based on sediment geochemical properties mentioned in the description.
• Developing biodiversity surrogates using parameters like chlorin indices and acid-extractable elements.
• Analyzing regional geochemical characteristics of a deep-sea plateau and seamount.
• Studying the reactivity and bioavailability of organic matter in calcareous oozes.

Strengths

• Data includes specific water depth ranges (1300 - 2423 m) for sample collection.
• Provides quantitative measurements, such as organic carbon content (0.26±0.1%) and chlorin indices (0.62 - 0.97).
• Covers multiple sediment characteristics including mineralogy, elemental concentrations, and isotopic compositions.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific study region.

Provenance

Source

Geoscience Australia Data

Collection Method

Scientific study analyzing sediment samples.

Freshness

Last updated 2026-04-30 12:54:36.744185; freshness should be verified.

Geography

Lord Howe Rise and Gifford Guyot off eastern Australia.