Australian Tertiary Marine Bed Age Revisions from Geological Research
Updated 1mo ago
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Description
Drastic changes in ideas of the age of marine Tertiary deposits in Australia have been necessary in recent years. The dataset, from Geoscience Australia Data, documents these revisions, including the recognition of Eocene deposits over a wide area in south-eastern Australia based on detailed mapping and microfauna investigation. The discovery of the Eocene foraminiferal genus Hantkenina at localities like Bird Rock, Torquay, has been a key factor in reclassifying beds from Upper Oligocene or Miocene to Eocene.
Use Cases
Re-evaluating regional stratigraphic timelines based on described fossil discoveries and mapping.
Correlating marine sediment layers across south-eastern Australia using the mentioned microfaunal evidence.
Studying the distribution and significance of the Eocene foraminiferal genus Hantkenina in Australian geology.
Investigating the debated existence of definite marine Oligocene beds in Australia as discussed in the description.
Strengths
Describes specific, impactful fossil discoveries like Hantkenina at Bird Rock, Torquay.
References detailed mapping of deposits in south-western Victoria and subsequent microfauna investigation.
Mentions a quantified thickness of at least 4,000 feet of Middle Eocene beds proved in bores.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data is presented in PDF/HTML formats, which may require extraction for computational analysis.
Provenance
Source
Geoscience Australia Data
Collection Method
Detailed geological mapping and investigation of sediments for microfaunas.
Time Range
Tertiary period (focus on Eocene, Oligocene, Miocene, Pliocene)
Freshness
Last updated 2026-04-20 01:28:49.880354; freshness should be verified.