The McArthur Basin Bulletin describes mid-Proterozoic sedimentary rocks forming a platform cover sequence near the eastern edge of the North Australian Craton. The sequence in the southern half of the basin is divided into four stratigraphic groups, including the Tawallah Group (about 4500 m thick) and the McArthur and Nathan Groups (combined thickness about 5500 m). The data was published by the Australian Ocean Data Network and last updated on 2026-05-05.
Use Cases
- Analyzing stratigraphic sequences and unconformities based on described regional unconformities dividing four groups.
- Studying depositional environments based on descriptions of shallow water, peritidal, lagoonal, lacustrine, and fluvial settings.
- Investigating mineral potential based on mentions of copper-bearing breccia pipes and potassium-rich felsic igneous rocks.
- Modeling basin structure based on descriptions of the Batten Fault Zone and pull-apart sub-basins.
Strengths
- Provides detailed thickness measurements for stratigraphic groups, such as the Tawallah Group (about 4500 m thick).
- Includes specific geological ages, such as crystalline basement about 1800 Ma old and a U-Pb age of 1690125 Ma.
- Describes structural features with quantified dimensions, such as the Batten Fault Zone horst containing up to perhaps 12 km of sedimentary rock.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data formats are PDF and HTML, which may require parsing to extract structured data.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- Mid-Proterozoic
- Freshness
- Last updated 2026-05-05 02:36:20.599892; freshness should be verified.
- Geography
- Southern McArthur Basin, Northern Territory, Australia