A 200-million-year geological record from 1800 to 1600 Ma preserved in northern Australia's Mount Isa region documents the breakup of the Nuna supercontinent. The Australian Ocean Data Network provides this field guide detailing three stacked sedimentary basins and their evolution from fluviatile-lacustrine to deep marine environments. The guide was last updated on April 16, 2026.
Use Cases
- Modeling intracontinental rifting processes based on the described 200 Myr record of crustal thinning and magmatism.
- Analyzing sedimentary basin evolution based on the three stacked basins (Leichhardt, Calvert, Isa) and their depositional condition changes.
- Investigating crustal architecture based on the described North American Basin and Range-style model linked to extensional shear zones.
- Studying metamorphic and magmatic events based on the record of bimodal magmatism and high temperature-low pressure metamorphism.
Strengths
- The dataset covers a specific 200-million-year time span from 1800 to 1600 Ma.
- It details three distinct sedimentary basins (Leichhardt, Calvert, Isa) with defined age ranges.
- The description provides a clear geological narrative of basin evolution linked to tectonic events.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- The data format is a ZIP containing HTML and PDF files, which may require extraction and manual parsing.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Likely compiled from geological field observations and research.
- Time Range
- 1800-1600 Ma (Paleoproterozoic-earliest Mesoproterozoic)
- Freshness
- Last updated 2026-04-16 14:24:55.352575; freshness should be verified.
- Geography
- Mount Isa region, northern Australia