Nannofossil and planktic foraminiferal biostratigraphy data from the Australian Ocean Data Network examines the Oligocene-Miocene boundary in the Indo-Pacific region. The description suggests the dataset contains evidence on the depth-related first appearance of species like Globigerinoides quadrilobatus primordius and the co-occurrence of Globorotalia opima opima. It proposes a combined planktic foraminiferal zone N3/4 and a buffer zone for the boundary transition.
Use Cases
- Refining planktic foraminiferal zonation based on the lowest occurrence of Globigerinoides quadrilobatus primordius.
- Comparing biostratigraphic events between shallow marginal-marine and deep oceanic sediments.
- Delineating the Oligocene-Miocene boundary using nannofossil datums like Sphenolithus ciperoensis extinction.
- Studying bathymetric shifts of the lysocline and carbonate compensation depth during the latest Oligocene.
Strengths
- Data covers multiple sections within the Indo-Pacific region, allowing for spatial comparison.
- Description references specific biostratigraphic events and species, suggesting detailed taxonomic data.
- The dataset is hosted by the Australian Ocean Data Network, a government-affiliated platform.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- Oligocene-Miocene boundary
- Freshness
- Last updated 2026-06-27 20:37:58.699001; freshness should be verified.
- Geography
- Indo-Pacific region