Geology of the Southern McArthur Basin: Stratigraphy and Structure

Geoscience Australia Data provides a geological bulletin describing the mid-Proterozoic sedimentary rocks of the southern McArthur Basin in the Northern Territory. The description details four stratigraphic groups with reported thicknesses up to 5500 meters and includes structural analysis of the Batten Fault Zone. The dataset was last updated on 2026-04-20.

Use Cases

• Stratigraphic correlation and modeling based on described group thicknesses and unconformities.
• Reconstructing paleoenvironments based on described rock types like evaporitic dolostones and stromatolites.
• Analyzing basin structure and tectonic history based on the described Batten Fault Zone and wrench-faulting.
• Mineral prospectivity analysis for copper based on mentioned potassium-rich felsic igneous rocks and breccia pipes.

Strengths

• Description includes specific stratigraphic group thicknesses (e.g., Tawallah Group ~4500m).
• Provides a U-Pb radiometric age of 1690±25 Ma for tuffs in the McArthur Group.
• Details structural features like the Batten Fault Zone and estimates sedimentary rock thickness variations.

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 data_gov_au, focusing on a specific Australian region.

Provenance

Source

Geoscience Australia Data

Collection Method

Likely contains compiled field observations, mapping, and geological analysis.

Time Range

Mid-Proterozoic (basement ~1800 Ma, McArthur Group tuffs ~1690 Ma, Roper Group >1400 Ma).

Freshness

Last updated 2026-04-20 03:40:53.818091; freshness should be verified.

Geography

Southern McArthur Basin, Northern Territory, Australia.