Proterozoic River Supersequence Stratigraphy and Facies Analysis

The River Supersequence is a 15-million-year stratigraphic unit within the Isa Superbasin, comprising eight sequences. It reaches a maximum thickness of 3300 meters on the central Lawn Hill Platform, with facies ranging from fine-grained siliciclastics to mixed carbonate-siliciclastic successions. This dataset is based on a scientific journal paper published in 2000 by Krassay et al., describing the supersequence's structure, facies, and syndepositional faulting.

Use Cases

• Analyze facies distribution and thickness changes across fault-bounded sub-basins described in the text.
• Model syndepositional fault movement and its impact on accommodation cycles using documented fault offsets and thickness changes.
• Identify stratigraphic levels associated with Zn-Pb-Ag mineralization within the supersequence for mineral exploration studies.
• Correlate lowstand deposits, including fluvial channels and turbidites, with seismic and outcrop-scale data.
• Study the transition from mixed carbonate-siliciclastic to fine-grained siliciclastic facies in the lower part of the supersequence.

Strengths

• Maximum thickness of the supersequence is documented at 3300 meters.
• Describes eight 3rd-order sequences within the 15-million-year supersequence.
• Identifies at least three stratigraphic levels associated with base-metal mineralization.
• Analysis integrates drillhole, seismic, and outcrop data across the Lawn Hill Platform.

Limitations

• Dataset is a single scientific paper, not a structured database with rows or columns.
• No raw numerical data or sample records are provided; information is descriptive.
• Temporal coverage is specific to the Proterozoic era, limiting modern analog studies.

Provenance

Source

Australian Journal of Earth Sciences publication by Krassay, A. A., Bradshaw, B. E., Domagala, J., & Jackson, M. J.

Collection Method

Field observation, drillhole intersection, and reflection seismic analysis.

Time Range

Proterozoic era.

Freshness

null

Geography

Lawn Hill Platform and McArthur Basin in northern Australia.