Palynology of the Oligocene-Miocene sequence in the Oakvale-1 corehole, western Murray Bas
Updated 1mo ago
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Description
Palynological analysis of the marine Oligocene-Miocene sequence in the Oakvale-1 corehole, western Murray Basin, South Australia, shows diverse and well-preserved assemblages. The dataset, published by the Australian Ocean Data Network, includes records of spores, pollen, and dinoflagellates, with evidence for taxa like Nothofagus, Myrtaceae, and Acacia from the late Oligocene. A quantitative zonation based on major pollen taxa frequencies divides the sequence into two major zones, with the younger zone further divided into four sub-zones.
Use Cases
Reconstructing past vegetation and climate based on pollen and spore assemblages mentioned in the description.
Studying the evolution and diversity of specific plant families (e.g., Myrtaceae, Nothofagus, Cyperaceae) over geological time.
Correlating regional stratigraphy by comparing pollen zones, such as the Triporopollenites bellus Zone, with other sites.
Investigating marine-terrestrial linkages through the analysis of concurrent dinoflagellate cyst records.
Strengths
Diverse and well-preserved assemblages of spores, pollen, and dinoflagellates are documented throughout the sequence.
Provides good fossil records for extant Australian taxa, including Acacia pollen from the late Oligocene.
Includes a statistically calculated quantitative zonation enabling division into two major zones and four sub-zones.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data is provided in PDF and HTML formats, which may require extraction for computational analysis.
Provenance
Source
Australian Ocean Data Network
Collection Method
Palynological analysis of core samples.
Time Range
Oligocene to Miocene geological periods.
Freshness
Last updated 2026-04-10 20:18:31.835256; freshness should be verified.
Geography
Oakvale-1 corehole, western Murray Basin, South Australia.
File formats are PDF and HTML; data may not be in a readily machine-readable tabular format.