Nannofossil and planktic foraminiferal biostratigraphy around the Oligocene-Miocene bounda

Indo-Pacific region data from three marginal-marine sections and deep oceanic sediments. The dataset contains biostratigraphic evidence for nannofossils and planktic foraminifera, used to analyze the Oligocene-Miocene boundary. It was published by Geoscience Australia Data and last updated on 2026-04-30.

Use Cases

• Correlating stratigraphic sections based on the appearance of Globigerinoides quadrilobatus primordius mentioned in the description
• Studying bathymetric influences on fossil occurrences based on depth-related evidence described
• Refining planktic foraminiferal zonation (e.g., combining Zones N.3 and N.4) based on the overlap of species described
• Investigating the timing of the Oligocene-Miocene transition using the suggested buffer zone between Sphenolithus ciperoensis and Sphenolithus belemnos datums

Strengths

• Focuses on a specific and debated geological boundary (Oligocene-Miocene)
• Compares evidence from multiple sediment types (marginal-marine and deep oceanic)
• References specific fossil species like Sphenolithus ciperoensis and Globorotalia opima opima for correlation

Limitations

• Row count is unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download
• Data is provided in PDF and HTML formats, which may require extraction for analysis

Provenance

Source

Geoscience Australia Data

Collection Method

Likely contains field observations and literature review from biostratigraphic studies.

Time Range

Late Oligocene to early Miocene

Freshness

Last updated 2026-04-30 15:07:32.071738; freshness should be verified

Geography

Parts of the Indo-Pacific region