Cenozoic Volcanism of the Capel-Faust Basins: Seafloor Features and Ages

Geoscience Australia survey data identifies volcanic cones, flows, and sills on the seafloor of the northern Lord Howe Rise. The dataset includes features from at least two distinct volcanic ages: Miocene-Pliocene (approximately 4-7 Ma) and Eocene-Oligocene. Analysis is based on seismic data and swath bathymetry from a recent survey, with findings presented at the Australian Earth Sciences Convention in 2010.

Use Cases

• Map the distribution of volcanic seamounts and cones based on swath bathymetry and seismic data.
• Analyze the alignment and age relationships of seamount chains to infer hotspot activity.
• Study the erosion patterns around volcanic cones based on the described sediment moats.
• Correlate volcanic features with regional unconformities and basement structures identified in seismic profiles.

Strengths

• Identifies at least two distinct volcanic ages: Miocene-Pliocene (~4-7 Ma) and Eocene-Oligocene.
• Includes analysis of specific features like cones, flows, sills, and the Gifford Guyot (~18 Ma).
• Based on multiple data sources: seismic data (survey s302) and swath bathymetry.

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/temporal bias inherent to the specific survey area.

Provenance

Source

Geoscience Australia Data

Collection Method

Survey data acquisition and analysis of seismic profiles and swath bathymetry.

Time Range

Cenozoic era, with specific features dated to Eocene-Oligocene and Miocene-Pliocene (~4-7 Ma).

Freshness

Last updated 2026-04-20 02:25:35.185357; freshness should be verified.

Geography

Capel-Faust Basins, northern Lord Howe Rise, southwest Pacific Ocean.