The River Supersequence is a 15-million-year stratigraphic cycle within the Isa Superbasin, attaining a maximum thickness of 3300 meters on the central Lawn Hill Platform. It comprises eight 3rd-order sequences of fine-grained siliciclastic and mixed carbonate-siliciclastic facies, interspersed with sandstone and conglomeratic lowstand deposits. This dataset from the Australian Ocean Data Network describes the supersequence's facies, syndepositional faulting, and its association with Zn–Pb–Ag mineralisation.
Use Cases
- Model basin partitioning and accommodation cycles based on described synsedimentary fault movement.
- Analyze facies distribution and paleoenvironments based on described fluvial, shoreface, turbidite, and submarine fan deposits.
- Study the relationship between stratigraphy and mineralization based on the three described stratigraphic levels associated with base-metal mineralisation.
Strengths
- Maximum thickness of 3300 meters provides a substantial stratigraphic unit for analysis.
- Description details eight 3rd-order sequences and a wide range of depositional systems.
- Association with Zn–Pb–Ag mineralisation is noted, linking stratigraphy to economic geology.
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 study area on the Lawn Hill Platform.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Likely contains geological observations from outcrops, drillholes, and reflection seismic imaging.
- Time Range
- Proterozoic era.
- Geography
- Lawn Hill Platform and McArthur Basin in northern Australia.