Sedimentary data from the Lower Cretaceous Eumeralla Formation in the Otway Basin of southern Australia distinguishes three discrete fluvial depositional systems (A-C). The dataset includes relationships, thicknesses, and palaeocurrent data for facies associations in outcrops, with sandstone bodies described as up to 70 meters thick. It was published by the Australian Ocean Data Network and last updated in June 2026.
Use Cases
- Modeling ancient fluvial system architecture based on described multistorey sandstone bodies and interchannel siltstones.
- Analyzing sediment provenance and mixing based on described proportions of basement-derived quartzose gravel and volcaniclastic sand.
- Reconstructing palaeogeography and drainage patterns based on reported southerly, north-easterly, and northwesterly palaeocurrent trends.
- Comparing depositional environments (e.g., alluvial fan vs. braid plain) based on described facies associations and interpreted systems.
Strengths
- Describes three distinct depositional systems with specific geographic extents (e.g., between Cape Otway and Apollo Bay).
- Provides concrete thickness measurements for sandstone bodies (up to 70 m) and siltstone separators.
- Includes directional palaeocurrent data for interpreting sediment transport.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data files are in PDF/HTML formats, which may require extraction for computational analysis.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Likely contains field measurements and analysis from geological outcrop studies.
- Time Range
- Aptian-Albian stages of the Lower Cretaceous period.
- Freshness
- Last updated 2026-06-05 07:59:42.834013; freshness should be verified.
- Geography
- Otway Basin, southern Australia, specifically outcrops between Cape Otway, Apollo Bay, Moonlight Head, and north of Skenes Creek.