Sedimentology and Facies Distribution within the Horn Valley Siltstone, Amadeus Basin

Five fully cored wells from the Amadeus Basin provide data for a reconnaissance study of the Horn Valley Siltstone. The formation is subdivided into ten informal members based on sedimentological and paleontological information, reflecting vertical lithofacies variations in a shallow marine shelf environment. Organic geochemical data from two wells confirms facies variations, with recorded TOC values of up to 6.30%.

Use Cases

• Classifying lithofacies variations based on sedimentological and paleontological criteria described in the study.
• Modeling the relationship between oxygen concentration, bioturbation, and organic matter preservation as inferred from the description.
• Identifying high organic-rich sediment intervals based on the described shale to carbonate ratio transition and TOC values.

Strengths

• Data is derived from five fully cored wells, providing direct subsurface samples.
• The study defines ten informal members based on multiple sedimentological and paleontological criteria.
• Organic geochemical data from two wells confirms facies variations, with TOC values recorded up to 6.30%.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Exposure of the formation is described as usually poor, potentially limiting surface validation.

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of fully cored wells and organic geochemical data.

Freshness

Last updated 2026-06-16 21:39:16.936729; freshness should be verified.

Geography

Amadeus Basin