Eumeralla Formation Fluvial Systems Data for the Otway Basin

Three discrete depositional systems (A-C) are distinguished in the Lower Cretaceous Eumeralla Formation, based on relationships, thicknesses, and palaeocurrent data from outcrops in the eastern Otway Basin. The dataset, provided by the Australian Ocean Data Network, includes measurements of sandstone bodies up to 70 meters thick and interchannel siltstones. It was last updated on 2026-04-10.

Use Cases

• Modeling ancient fluvial architecture based on described multistorey sandstone bodies and facies associations.
• Reconstructing palaeogeography based on documented southerly, north-easterly, and northwesterly palaeocurrent trends.
• Analyzing sediment provenance mixing based on described proportions of quartzose and volcaniclastic detritus.
• Comparing depositional systems (alluvial fan vs. braid plain) based on described characteristics of systems A, B, and C.

Strengths

• Describes three distinct depositional systems with specific thickness measurements, such as sandstone bodies up to 70 meters thick.
• Includes directional palaeocurrent data for each system, aiding in paleogeographic reconstruction.
• Provides a model for sediment derivation from infrarift volcanic complexes during the Aptian-Albian.

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 Otway Basin outcrops studied.

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of outcrop data from the Eumeralla Formation in the eastern Otway Basin.

Time Range

Lower Cretaceous (Aptian-Albian)

Freshness

Last updated 2026-04-10 20:09:01.860368; freshness should be verified.

Geography

Otway Basin, southern Australia (Cape Otway, Apollo Bay, Moonlight Head, Rotten Point, Skenes Creek)