Groundwater Salinity Origins Near Tresco, Victoria, from Pleistocene to Present

Core samples and groundwater from bores at Tresco, Victoria, have been analysed for palynology and chemistry. The data reveals an aquifer was initially fresh in the early Pleistocene before being invaded by concentrated NaCl water pulses between 400,000 and 18,000 years B.P., altering its chemical evolution. This dataset is provided by the Australian Ocean Data Network via data.gov.au and was last updated in April 2026.

Use Cases

• Modeling historical groundwater chemistry evolution based on described salinity pulses
• Analyzing the relationship between surface brine pools and aquifer salinity based on the described invasion mechanism
• Testing marine vs. terrestrial salinity origins based on the described chemical patterns
• Correlating palynological data with geochemical changes in the aquifer over time

Strengths

• Data includes specific temporal markers for salinity events (400,000 to 18,000 years B.P.)
• Analysis integrates multiple data types: core samples, groundwater, palynology, and chemistry
• Provides a clear, non-marine explanation for observed salinity patterns

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 study site at Tresco

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of core samples and groundwater from bores

Time Range

Early Pleistocene to 18,000 years B.P.

Freshness

Last updated 2026-04-10 19:04:43.476538; freshness should be verified

Geography

Tresco, northwest Victoria, Australia, in the southern margin of the Murray Basin