Crustal Transect Seismic and Gravity Data Across the Vulcan Sub-basin, Australia

Wide-angle seismic data from ocean bottom seismographs, combined with gravity and deep marine reflection profiling, defines crustal-scale features along the Vulcan transect in northern Australia. The dataset, provided by Geoscience Australia, outlines the crustal and upper mantle architecture between the Precambrian Australian craton and the Timor Trough. It was last updated on 2026-05-14.

Use Cases

• Model crustal thinning from 35 km to 26 km based on seismic and gravity data.
• Interpret basin formation processes based on elevated P-wave velocities (7 km/s) in the lower crust.
• Analyse the attenuation of Precambrian basement rocks (from 35 km to 13-14 km) across the continental margin.
• Investigate upper mantle compositional boundaries based on reflections from 38-45 km depth.

Strengths

• Integrates multiple geophysical data types: wide-angle seismic, gravity, and deep marine reflection profiling.
• Provides specific crustal thickness measurements (35 km near coast, 26 km near Timor Trough).
• Includes interpreted depth ranges for features like strong reflections at ~13 km and mantle boundaries at 38-45 km.

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 transect location.

Provenance

Source

Geoscience Australia Data

Collection Method

Collected via ocean bottom seismographs, gravity surveys, and deep marine reflection profiling.

Time Range

null

Freshness

Last updated 2026-05-14 09:40:22.800397; freshness should be verified.

Geography

Vulcan transect in northern Australia, between the Precambrian Australian craton and the Timor Trough.