Ngalia Basin Stratigraphy and Structure in Northern Territory, Australia

Up to 5 km thick sedimentary sequence in the Ngalia Basin, comprising Adelaidean and Palaeozoic sediments. The dataset, from Geoscience Australia, includes details on nine unconformities, structural features like thrust nappes and horsts, and assessments of petroleum and uranium potential. It was last updated on 2026-04-30.

Use Cases

• Modeling basin evolution based on described periods of sedimentation and diastrophism.
• Assessing petroleum potential based on the described unconformities and absence of demonstrated source rocks.
• Evaluating uranium mineralisation potential within the described Devono-Carboniferous continental sandstone.
• Analyzing groundwater resources from described Devono-Carboniferous and Cainozoic aquifers.

Strengths

• Describes sediment thicknesses with specific metrics (e.g., Adelaidean 3200 m, Devono-Carboniferous 3100 m).
• Identifies nine distinct unconformities recording alternate sedimentation and diastrophism.
• Includes structural analysis of features like thrust nappes, fault troughs, and sinusoidal horsts and grabens.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified despite the 2026 update date.

Provenance

Source

Geoscience Australia Data

Time Range

Adelaidean to late Palaeozoic time, with thin Tertiary deposits

Freshness

Last updated 2026-04-30 14:59:19.301930

Geography

Ngalia Basin, Northern Territory, Australia