Cape Range Geological Structure Stratigraphy And Micropaleontology

A geological report details the stratigraphy and structure of the Cape Range anticline in Western Australia. The document describes five Tertiary formations, including the Mandu Calcarenite and Tulki Limestone, and estimates underlying sediment thicknesses up to 18,000 feet. The Australian Ocean Data Network published this report, which was last updated in April 2026.

Use Cases

• Analyze the Mandu Calcarenite and Tulki Limestone formations for regional stratigraphic correlation.
• Model the 1200-foot vertical closure and 1200-square-mile closed area of the anticline for structural trap analysis.
• Assess the estimated 3,000 to 18,000 feet of underlying Cretaceous to Devonian sediments for basin modeling.
• Study micropaleontological data to date the lower Miocene (e-stage and f1-stage) formations.
• Evaluate the potential for oil drainage on the west and east flanks based on the described structural geometry.

Strengths

• Report provides specific measurements: 80 miles long, 20 miles wide anticline with 1200 ft vertical closure.
• Describes five distinct Tertiary formations with thicknesses (e.g., 265 feet of Mandu Calcarenite).

Limitations

• Core data (e.g., sample-level micropaleontology, geophysical readings) is not provided in a structured, machine-readable format.
• The report's age (referencing a 1960s study) means interpretations may not reflect modern geological models.
• No row or sample count is available for quantitative analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological field study and analysis, likely from published scientific work.

Time Range

Focuses on Tertiary (Miocene, Pliocene) to older (Permian, Carboniferous, Devonian) geological periods.

Freshness

Metadata indicates a recent update in April 2026, but the underlying scientific study is from the mid-20th century.

Geography

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