The Cape Range structure, Western Australia Pt 1: Stratigraphy and structure Pt 2: Micropa

A geological report from Geoscience Australia describing the Cape Range anticline, a structure at least 80 miles long and 20 miles wide with a vertical closure of 1200 feet. The dataset details five Tertiary limestone formations, including the Mandu Calcarenite (265 feet thick) and Tulki Limestone (225 to 420 feet thick), and discusses the potential for oil drainage. It was last updated on 2026-04-30.

Use Cases

• Model subsurface geological structures based on described stratigraphic layers and vertical closure.
• Assess hydrocarbon potential based on the analysis of unrestricted oil drainage on the structure's flanks.
• Correlate regional Tertiary limestone formations using the detailed descriptions of the Cape Range Group.
• Plan geophysical investigations (gravity, seismic) to determine sediment thickness as suggested in the report.

Strengths

• Provides specific dimensional data for the anticline, including an 80-mile length and 1200-foot vertical closure.
• Details the thickness of specific geological formations, such as the 265-foot Mandu Calcarenite.
• Identifies the structure as the largest in the Carnarvon Basin by vertical closure and closed area (1200 square miles).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided as PDF/HTML documents, requiring extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

Geological field study and analysis.

Time Range

Tertiary period (focus on Miocene and possibly Pliocene).

Freshness

Last updated 2026-04-30 15:15:51.266314; freshness should be verified.

Geography

Cape Range peninsula, Carnarvon (North-West) Basin, Western Australia.