Horn Valley Siltstone Facies Distribution and Organic Geochemistry

A reconnaissance study of the Horn Valley Siltstone formation in the Amadeus Basin, conducted using material from five fully cored wells. The formation is subdivided into ten informal members based on sedimentological and palaeontological information, reflecting lithofacies variations in a shallow marine shelf environment. Organic geochemical data from two wells confirm facies variations, with a transition between members HV6 and HV7 showing high organic-rich sediments.

Use Cases

• Classifying lithofacies variations based on sedimentological and palaeontological criteria described in the study
• Analyzing the relationship between oxygen concentration in bottom water and organic matter preservation inferred from the description
• Identifying high organic-rich sediment zones based on the recorded TOC values of up to 6.30%
• Mapping vertical facies distribution using the ten informal member subdivisions (HV1 to HV10)
• Correlating shale to carbonate ratio changes with organic geochemical data from specific wells

Strengths

• Data sourced from five fully cored wells (Henbury #4, Henbury #6, Mt Liebig #2, Tempe Vale#1, Tent Hill #1) providing preserved material
• Formation subdivided into ten distinct informal members (HV1 to HV10) for detailed analysis
• Includes organic geochemical data with recorded TOC values of 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 Horn Valley Siltstone is usually poor, as noted in the description

Provenance

Source

Australian Ocean Data Network

Collection Method

Reconnaissance study using sedimentological and palaeontological information from cored wells.

Freshness

Last updated 2026-05-05 02:54:27.265013; freshness should be verified

Geography

Amadeus Basin