Mid-Proterozoic sedimentary rocks from the southern McArthur Basin in Australia's Northern Territory, documented by Geoscience Australia. The sequence is divided into four stratigraphic groups with thicknesses up to 4500 meters and includes formations of quartz sandstone, basic volcanics, stromatolitic dolostones, and evaporitic deposits. The structure is dominated by the Batten Fault Zone, a half-graben containing up to an estimated 12 km of sedimentary rock.
Use Cases
- Modeling basin evolution based on described stratigraphic groups and unconformities.
- Analyzing depositional environments (peritidal, lagoonal, lacustrine) from described rock formations and features.
- Studying structural geology based on the described Batten Fault Zone and wrench-faulting history.
- Investigating paleoclimate indicators like evaporite pseudomorphs and desiccation features mentioned in the description.
Strengths
- Detailed stratigraphic breakdown into four groups with specified thicknesses (e.g., Tawallah Group ~4500m).
- Includes specific geochronological data, such as a U-Pb age of 1690±25 Ma for tuffs in the McArthur Group.
- Provides structural context with quantified rock thickness estimates (up to ~12 km in the Batten Fault Zone).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data is presented in PDF/HTML formats, which may require extraction for computational analysis.
Provenance
- Source
- Geoscience Australia Data
- Time Range
- Mid-Proterozoic (basement ~1800 Ma, Roper Group >1400 Ma)
- Freshness
- Last updated 2026-04-30 12:28:41.718475; freshness should be verified.
- Geography
- Southern McArthur Basin, Northern Territory, Australia