Geology of the Birdsville 4-Mile Sheet Area, Queensland

Queensland's Birdsville 4-mile sheet area features a geological sequence of at least 3,000 feet of Mesozoic sediments, unconformably overlain by up to 100 feet of Tertiary rocks. The Mesozoic rocks form the main aquifer and impermeable cap in the western Great Artesian Basin. The dataset, hosted by the Australian Ocean Data Network, includes mapping and water bore log analysis identifying potential petroleum source rocks and reservoir sandstones.

Use Cases

• Model groundwater flow and aquifer properties based on the described Mesozoic rock sequence and bore logs.
• Assess petroleum source rock potential based on the described marine shales of the Wilgunya Formation.
• Map regional stratigraphy and structural geology for the Birdsville area.
• Correlate geological units with neighboring areas like the Boulia 4-mile sheet.

Strengths

• Describes a specific geological sequence of at least 3,000 feet of Mesozoic sediments.
• Identifies a maximum Tertiary rock thickness of 100 feet.
• References specific geological formations (Wilgunya Formation, Longsight Sandstone) and geographic locations (Bedourie Bore, Delhi Frome Santos Betoota No. 1 Well).

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 a last updated date of 2026-06-05.

Provenance

Source

Australian Ocean Data Network

Collection Method

Mapping and examination of water bore logs.

Freshness

Last updated 2026-06-05 07:41:58.800351

Geography

Birdsville 4-mile sheet area, Queensland, Australia