Mount Isa Basin Architecture and Crustal Evolution, 1800-1600 Ma

A 200 Myr geological record (1800-1600 Ma) of intracontinental rifting in northern Australia, produced by Geoscience Australia Data. The data documents three stacked sedimentary basins and the evolution from fluvial-lacustrine to deep marine depositional environments. The record is presented as a field guide for investigation through mine visits and outcrop geology.

Use Cases

• Modeling basin evolution based on the described 200 Myr record of rifting and sedimentation.
• Analyzing crustal architecture based on the described North American Basin and Range-style analog.
• Studying magmatic evolution based on the transition from continental to oceanic tholeiites mentioned in the description.
• Correlating geological events based on the timeline of three superbasins and major unconformities.

Strengths

• Covers a specific 200 million-year geological timeframe (1800-1600 Ma).
• Documents three distinct sedimentary superbasins (Leichhardt, Calvert, Isa) separated by unconformities.
• Describes a clear evolutionary sequence from continental rifting to deep marine conditions.

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/temporal bias inherent to data_gov_au.

Provenance

Source

Geoscience Australia Data

Collection Method

Likely compiled from field observations, mine visits, and outcrop geology.

Time Range

1800-1600 Ma (Paleoproterozoic to earliest Mesoproterozoic)

Freshness

Last updated 2026-04-30 14:24:57.462300; freshness should be verified.

Geography

Mount Isa region, northern Australia