Oligocene-Miocene Marine Sediment Stratigraphy In The Murray Basin

A geological study analyzes the 'Geera Clay equivalent' unit and the Mologa weathering surface within the Murray Basin's Renmark Group. The research, published by the Australian Ocean Data Network, correlates these features with global sea-level changes and proposes an age correlation with the 13.8 Ma or 10.5 Ma sequence boundary. It includes descriptions of marine dinoflagellate extinctions and introduces a new pollen species, Tetrapollis campbellbrownii.

Use Cases

• Correlating the 'Geera Clay equivalent' unit and Mologa weathering surface with global 13.8 Ma or 10.5 Ma sequence boundaries for age dating.
• Analyzing marine dinoflagellate extinction events recorded in the Geera Clay to constrain Middle Miocene biostratigraphy.
• Using the described pollen species, including the new Tetrapollis campbellbrownii, for biostratigraphic zonation within the Murray Basin.

Strengths

• Proposes specific age correlations (13.8 Ma or 10.5 Ma) for key geological surfaces.
• Documents extinction events of marine dinoflagellates and describes a new pollen species.

Limitations

• Data format is PDF/HTML, requiring manual extraction for computational analysis.
• Sample data and specific row/column counts are unavailable, limiting quantitative assessment.
• Spatial coverage is confined to the Murray Basin, reducing broader geographic applicability.

Provenance

Source

Australian Ocean Data Network

Collection Method

null

Time Range

Oligocene to Middle Miocene

Freshness

null

Geography

Murray Basin, Australia