Eumeralla Formation Fluvial Systems: Sedimentary Data from the Otway Basin

Three distinct high-energy fluvial depositional systems (A-C) are identified in the Lower Cretaceous Eumeralla Formation. The dataset, hosted by the Australian Ocean Data Network, includes relationships, thicknesses, and palaeocurrent data from outcrops in the eastern Otway Basin. System A contains sandstone bodies up to 70 meters thick, while System B features sandstone bodies up to 14 meters thick with thin coal beds and soil profiles.

Use Cases

• Modeling ancient fluvial system architecture based on described multistorey sandstone bodies and interchannel siltstones.
• Analyzing sediment provenance and mixing based on the described proportions of basement-derived quartzose material and volcaniclastic sand.
• Reconstructing palaeogeography and drainage patterns based on the reported southerly, north-easterly, and northwesterly palaeocurrent trends.
• Studying Aptian-Albian rift basin infill processes based on the described model of volcaniclastic aprons and alluvial fans.

Strengths

• Identifies three discrete depositional systems with specific thickness measurements (e.g., sandstone bodies up to 70 m and 14 m).
• Includes directional palaeocurrent data for reconstructing ancient flow patterns.
• Provides a specific geological context linking the formation to Aptian-Albian volcanic activity in the Otway rift basin.

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 the specific outcrops studied in the eastern Otway Basin.

Provenance

Source

Australian Ocean Data Network

Collection Method

Field observations and analysis of outcrops in the eastern Otway Basin.

Time Range

Lower Cretaceous (Aptian-Albian)

Freshness

Last updated 2026-06-27 16:29:59.616892; freshness should be verified.

Geography

Otway Basin, southern Australia (specifically outcrops between Cape Otway, Apollo Bay, Moonlight Head, Rotten Point, and north of Skenes Creek).