A compilation of seafloor spreading magnetic data for the southern margin of Australia confirms the tectonic separation from Antarctica. The dataset includes critical data collected during the 1986 cruise of the R/V Rig Seismic and covers the period from mid-Jurassic (>160 Ma) to the present. It is hosted by the Australian Ocean Data Network.
Use Cases
- Modeling slow seafloor spreading rates (<4 mm/year) based on magnetic anomaly data
- Analyzing spreading ridge jumps between 131.25° E and Tasmania based on the description
- Studying variable spreading azimuths oblique to the separation azimuth, as described between 129° and 131.75°E
- Comparing slow spreading systems to confined basins like the Gulf of Aden based on the described analogy
Strengths
- Includes critical magnetic data from a specific research cruise (R/V Rig Seismic, 1986)
- Describes a long temporal coverage spanning from >160 million years ago to the present
- Provides specific quantitative parameters like half-rates (<4.4 mm/year) and azimuths (335°)
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
- Data is provided in PDF and HTML formats, which may require extraction for analysis
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Compilation of seafloor spreading magnetic data, including ship-based collection.
- Time Range
- From mid-Jurassic (>160 Ma) to present.
- Freshness
- Last updated 2026-05-05 02:37:02.825123; freshness should be verified
- Geography
- Southern margin of Australia, extending to Antarctica.