Deep-Sea Sediment Geochemistry of the Northern Lord Howe Rise

Geochemical data characterizes deep-sea floor sediments from the Lord Howe Rise plateau and Gifford Guyot seamount off eastern Australia. The dataset includes analyses of mineralogy, organic carbon and nitrogen concentrations and isotopes, and major and trace elements. It was published by Geoscience Australia Data and last updated in May 2026.

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 in marine sediments.
• Studying regional geochemical characteristics of calcareous oozes in a plateau and seamount setting.

Strengths

• Provides specific geochemical measurements, including organic carbon content (0.26±0.1%) and chlorin indices (0.62 - 0.97).
• Covers a defined geographic area (Lord Howe Rise and Gifford Guyot) and depth range (1300 - 2423 meters).
• Aims to provide a coherent synthesis for a suite of geochemical data for habitat inference.

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 area.

Provenance

Source

Geoscience Australia Data

Collection Method

Analysis of surface sediment samples collected from the deep-sea floor.

Freshness

Last updated 2026-05-14 04:04:23.441626; freshness should be verified.

Geography

Lord Howe Rise (deep-sea plateau) and Gifford Guyot (seamount) off eastern Australia.