Horn Valley Siltstone Sedimentology and Facies from Five Cored Wells

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 confirm facies variations, with one transition layer showing recorded TOC values of up to 6.30%.

Use Cases

• Classifying lithofacies variations based on sedimentological and paleontological member definitions.
• Modeling organic matter preservation based on oxygen concentration and bioturbation inferences.
• Correlating stratigraphic layers across wells using the defined HV1-HV10 member framework.
• Analyzing the relationship between shale-to-carbonate ratio shifts and high organic content, as seen at the HV6-HV7 transition.

Strengths

• Data is derived from fully cored wells, providing high-quality subsurface samples.
• Study defines ten distinct informal members (HV1-HV10) for detailed vertical analysis.
• Organic geochemical data from two wells confirms facies interpretations with specific TOC values 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', suggesting data represent specific, cored locations.

Provenance

Source

Geoscience Australia Data

Collection Method

Analysis of sedimentological, paleontological, and organic geochemical data from five cored wells.

Time Range

null

Freshness

Last updated 2026-03 15:48:21.391959; freshness should be verified.

Geography

Amadeus Basin, Australia