The Murray Basin in southeastern Australia contains subsurface geological data relevant to groundwater salinity management. The dataset likely contains stratigraphic and sedimentological analyses of mid-Tertiary permeability barriers, including formations like the Ettrick Formation, Winnambool Formation, and Geera Clay. It is hosted by the Australian Ocean Data Network and was last updated in May 2026.
Use Cases
- Model groundwater flow paths based on described permeability barriers like the Geera Clay.
- Analyze aquifer geometry and connectivity using stratigraphic unit distributions mentioned.
- Assess subsurface salinity discharge risks based on facies analysis of borelogs.
- Reconstruct paleogeographic marine incursions during the Cainozoic era.
Strengths
- Includes specific porosity measurements (0-7% effective porosity) from a fully cored section.
- Describes detailed stratigraphic units with thickness ranges (e.g., 10-30 m for Ettrick Formation).
- Provides a temporal framework for marine incursions (starting about 32 Ma ago).
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 Murray Basin study area.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Subsurface facies analysis of borelogs and palaeogeographic reconstructions.
- Time Range
- Mid-Tertiary (Oligocene-Miocene), with events starting about 32 million years ago.
- Freshness
- Last updated 2026-05-05 01:12:43.599988; freshness should be verified.
- Geography
- Murray Basin, southeastern Australia.