Machattie 4-Mile Sheet Geology: Cretaceous Aquifers and Petroleum Potential in Queensland

A 1960 geological survey mapped the Machattie 4-mile sheet area in western Queensland. Surface mapping and water bore logs established a sequence of over 2750 feet of Cretaceous rocks, which form the main aquifer and cap of the western Great Artesian Basin. The report, sourced from Geoscience Australia Data, describes potential petroleum source and reservoir rocks but notes no economic mineral deposits were found.

Use Cases

• Model groundwater flow and aquifer properties based on described Cretaceous rock sequences and aquifer cap.
• Assess petroleum potential based on described Lower Cretaceous shales as possible source rocks.
• Map regional geological structures based on the described major north-east trending structure.
• Correlate stratigraphy with adjacent areas based on references to the Boulia and Springvale 4-mile sheet areas.

Strengths

• Based on field mapping and examination of water bore logs from 1960.
• Provides specific thickness measurements, including a sequence of at least 2750 feet of Cretaceous rocks.
• Identifies specific geological formations (Wilgunya Formation, Longsight Sandstone) and their potential economic roles.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Surface mapping and examination of water bore logs.

Time Range

Survey conducted in 1960.

Freshness

Last updated 2026-05-14 03:12:10.053780; freshness should be verified.

Geography

Machattie 4-mile sheet area, western Queensland, Australia.