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 offshore Lord Howe Rise Capel-Faust region. Analysis of seismic data and swath bathymetry reveals at least two distinct ages of volcanism: Miocene-Pliocene (approx. 4-7 Ma) and Eocene-Oligocene features. The survey area includes the Gifford Guyot and examines potential seamount chain alignments.

Use Cases

• Map submarine volcanic feature distribution based on identified cones, flows, and sill-related features.
• Analyze volcanic age relationships and seamount chain alignments based on described Miocene-Pliocene and Eocene-Oligocene periods.
• Study seafloor erosion patterns around volcanic cones based on the described sediment moats formed by currents.
• Correlate volcanic features with underlying geological structures based on seismic profile observations extending from unconformities and basement highs.

Strengths

• Identifies at least two distinct volcanic age groups (Miocene-Pliocene and Eocene-Oligocene) with approximate date ranges.
• Describes specific volcanic feature types including cones, flows, and sill-related features.
• Survey conducted by Geoscience Australia, a national geological survey organization.
• Analysis incorporates multiple data sources including seismic data (s302) and swath bathymetry.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data is presented in PDF and HTML formats, which may require extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

Survey acquiring exploration data and samples, with analysis of seismic data and swath bathymetry.

Time Range

Cenozoic era, with specific features dated to Miocene-Pliocene (approx. 4-7 million years ago) and Eocene-Oligocene.

Freshness

Last updated 2026-04-30 13:48:46.094545; freshness should be verified

Geography

Capel-Faust Basins, Northern Lord Howe Rise, offshore region including the Gifford Guyot and Tasman Basin vicinity.