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

A 200 Myr geological record from 1800-1600 Ma preserved in the Mount Isa region of northern Australia. This field guide describes the evolution of three stacked sedimentary basins through a period of intracontinental rifting, culminating in a North American Basin and Range-style crustal architecture. The data is provided by the Australian Ocean Data Network and was last updated in May 2026.

Use Cases

• Study the progression of sedimentary environments from fluviatile-lacustrine to marine based on the described basin sequences.
• Model crustal thinning and heat flow evolution based on the described record of rifting and magmatism.
• Correlate tectonic events like the Isan Orogeny with basin stratigraphy based on the provided timeline.
• Analyze the link between bimodal magmatism and basin formation at depth as described in the guide.

Strengths

• Covers a specific 200-million-year geological timeline from 1800 to 1600 Ma.
• Describes three distinct sedimentary superbasins (Leichhardt, Calvert, Isa) with defined time ranges.
• Integrates multiple geological processes: rifting, magmatism, metamorphism, and sedimentation.

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 as a field guide (PDF/ZIP/HTML), which may require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

1800-1600 Ma (Paleoproterozoic to earliest Mesoproterozoic)

Freshness

Last updated 2026-05 04 23:33:10.313370; freshness should be verified.

Geography

Mount Isa region, northern Australia