The dataset describes the stratigraphy and micropalaeontology of the Cape Range Structure, a Tertiary limestone anticline in Western Australia. It includes details on five Tertiary formations, thicknesses ranging from 265 to 420 feet, and estimates of underlying Cretaceous, Eocene, and older sediments up to 18,000 feet thick. The data was published by the Australian Ocean Data Network and last updated in April 2026.
Use Cases
- Model subsurface geology based on described Tertiary limestone formations and thicknesses.
- Analyze structural closure for hydrocarbon potential based on the 1200-foot vertical closure and 1200-square-mile closed area.
- Study micropalaeontology for age dating and environmental reconstruction of the described formations.
- Assess sediment thickness and basin evolution using estimates of Cretaceous and older marine sediments.
Strengths
- Provides specific dimensions for the structure: at least 80 miles long, 20 miles wide, with 1200-foot vertical closure.
- Includes detailed thickness measurements for multiple formations, such as the 265-foot Mandu Calcarenite.
- Describes the geological context, including the Indo-Pacific geosyncline and adjoining Western Australian shield.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to data_gov_au.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- Tertiary period (Miocene, possibly Pliocene) and older.
- Freshness
- Last updated 2026-04-16 15:36:09.919973; freshness should be verified.
- Geography
- Cape Range Structure, North-West Cape peninsula, Western Australia, Carnarvon Basin.