Stratigraphy of the Cretaceous/Paleogene Boundary at Lord Howe Rise, Southwest Pacific

Biostratigraphic, magnetostratigraphic, and geochemical data from Deep Sea Drilling Project Site 208 cores on the Lord Howe Rise. The dataset constrains stratigraphy around the Cretaceous/Paleogene boundary, providing measurements of calcareous nannofossils, carbonate carbon isotopes, and osmium concentrations. Data was published in GSA Bulletin in 2021 by researchers including Junichiro Kuroda.

Use Cases

• Identifying the Cretaceous/Paleogene boundary layer based on osmium concentration and isotopic composition data.
• Analyzing sediment deposition continuity from the Maastrichtian to Danian/Selandian based on calcareous nannofossil biostratigraphy.
• Correlating local carbon isotope shifts with global patterns using δ13Ccarb measurements.
• Refining magnetostratigraphic age models for the Southwest Pacific region using the provided core data.

Strengths

• Integrates multiple data types: biostratigraphic, magnetostratigraphic, and geochemical.
• Provides depth-specific constraints for the K/Pg boundary interval between 576.0-576.8 meters below seafloor.
• Includes isotopic data (δ13Ccarb and 187Os/188Os) consistent with global K/Pg impact patterns.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network, derived from Deep Sea Drilling Project Leg 21, Site 208.

Collection Method

Core sampling and laboratory analysis of sediments.

Time Range

Latest Cretaceous (Maastrichtian) to Paleocene (Danian and Selandian).

Freshness

Last updated 2026-06-04 06:28:24.967457; freshness should be verified.

Geography

Lord Howe Rise, Southwest Pacific (Site 208).