Lord Howe Rise Seismic Reflection Profiles from Gondwana Breakup

Approximately 900 km of east-west seismic reflection profile data at 27.2°S constrains the formation of the Lord Howe Rise continental ribbon. The dataset includes processed pre-stack depth-migrated images and interpretations from a 2016 marine geophysical survey, presented by the Australian Ocean Data Network. Findings detail rift basins up to 3.5 km thick and variations in syn-rift faulting.

Use Cases

• Map syn-rift and post-rift sedimentary sequences on the Lord Howe Rise using seismic stratigraphy interpretations.
• Analyze normal faulting variations within rift basins using pre-stack time-migrated seismic reflection line grids.
• Correlate buried basins in the Tasman Basin with early transform faulting events from seismic reflection profiles.
• Model the thickness and stratigraphy of the Middleton Basin using its ~3.5 km sedimentary fill data.
• Constrain the eastern boundary of the Tasman Basin against the Dampier Ridge using sharp seismic reflectivity contrasts.

Strengths

• Regional seismic profile spans ~900 km in length.
• Identifies rift basins with depths up to 3 km and sedimentary thickness up to ~3.5 km.
• Data includes both pre-stack depth-migrated and time-migrated processed products.

Limitations

• Row count, column names, and sample data are unavailable.
• Spatial coverage is limited to a specific transect at 27.2°S.
• Primary data format is HTML, which may not contain raw data files.

Provenance

Source

Australian Ocean Data Network

Collection Method

Multi-channel seismic reflection and bathymetry data collected on a multi-leg marine geophysical survey in 2016.

Time Range

Data collected in 2016; study focuses on Late Cretaceous rifting events.

Freshness

null

Geography

Lord Howe Rise, Tasman Basin, Dampier Ridge, offshore eastern Australia along 27.2°S.