Geology of the Southern McArthur Basin: Stratigraphy and Structure

The southern McArthur Basin in Australia's Northern Territory contains mid-Proterozoic sedimentary rocks. The bulletin describes a sequence divided into four stratigraphic groups with thicknesses up to 4500 meters and ages dating to about 1690-125 Ma. It was published by the Australian Ocean Data Network and last updated in 2026.

Use Cases

• Modeling basin evolution based on described stratigraphic groups and unconformities.
• Analyzing depositional environments based on described evaporitic dolostones, stromatolites, and elastic sediments.
• Studying structural geology based on the described Batten Fault Zone and wrench-faulting.
• Investigating mineral potential based on mentions of copper-bearing breccia pipes and iron formations.

Strengths

• Provides detailed stratigraphic descriptions with specific group thicknesses (e.g., Tawallah Group ~4500m).
• Includes geochronological data points, such as a U-Pb age of 1690-125 Ma.
• Describes structural features like the Batten Fault Zone and estimated rock thicknesses (up to ~12 km).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data files are in HTML and PDF formats, which may require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely compiled from geological field studies and existing literature, as it is described as a bulletin.

Time Range

Mid-Proterozoic, with specific rock units dating to approximately 1800 Ma and 1690-125 Ma.

Freshness

Last updated 2026-06-27 18:33:52.041497; freshness should be verified.

Geography

Southern McArthur Basin, Northern Territory, Australia.