Lord Howe Rise Continental Ribbon Geology and Tectonic Drivers

Lord Howe Rise continental ribbon data investigates Cretaceous fragmentation of eastern Gondwana. It includes marine geophysical surveys, dredge samples, and shallow drilling to model rift basin evolution. The dataset is associated with an Australian Ocean Data Network abstract presented at the 2016 AGU Fall Meeting.

Use Cases

• Model rift basin stratigraphy using marine geophysical survey data to test passive vs. active rifting scenarios.
• Analyze igneous rock composition from dredge samples to determine tectonic affinity and mantle processes.
• Correlate extensional history from seismic survey data with subduction zone retreat models.
• Integrate shallow drilling data (<600 m below-seafloor) with satellite geophysical data to refine basin architecture.
• Use deep crustal seismic survey cross-sections to explore drivers of continental ribboning and plate tectonics.

Strengths

• Includes a recent deep crustal seismic survey across the Lord Howe Rise.
• Proposes a deep stratigraphic well through a rift basin for future validation.

Limitations

• Current knowledge is based on widely-distributed data, limited dredge samples, and sparse shallow drilling.
• No deep stratigraphic well data is yet available, limiting evolutionary understanding.
• Sample coverage is sparse, with drilling limited to less than 600 meters below-seafloor.

Provenance

Source

Australian Ocean Data Network

Collection Method

Marine and satellite geophysical surveys, dredge samples, and shallow drilling.

Time Range

Cretaceous period and modern survey data (2016 abstract).

Freshness

null

Geography

Lord Howe Rise, eastern Gondwana fragment.