Cretaceous-Paleogene Boundary Stratigraphy from Lord Howe Rise Deep Sea Cores

Lord Howe Rise sediment cores from Deep Sea Drilling Project Site 208 provide data on the Cretaceous/Paleogene boundary. The dataset includes biostratigraphic, magnetostratigraphic, and geochemical measurements from cores at depths of 540-590 meters below seafloor. Data was published in 2021 by researchers including Junichiro Kuroda and is hosted by the Australian Ocean Data Network.

Use Cases

• Calibrating the Cretaceous/Paleogene boundary location based on biostratigraphic data from calcareous nannofossils.
• Analyzing global carbon cycle perturbations using the negative shift in carbonate carbon isotopic composition (δ13Ccarb).
• Identifying impact signals from the K/Pg bolide event using osmium concentration and isotopic composition (187Os/188Os).
• Assessing sediment continuity and deposition rates across a major geological boundary in a deep-sea environment.

Strengths

• Integrates multiple data types: biostratigraphic, magnetostratigraphic, and geochemical measurements.
• Provides depth-specific data points, with the K/Pg boundary interval identified at 576.0-576.8 meters below seafloor.
• Includes specific geochemical measurements such as osmium isotopic values as low as 0.12-0.16.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The study suggests the sedimentary record may not be completely continuous across the boundary interval.

Provenance

Source

Australian Ocean Data Network, derived from research published in GSA Bulletin.

Collection Method

Data collected from sediment cores recovered during Deep Sea Drilling Project Leg 21, Site 208.

Time Range

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

Freshness

Last updated 2026-06-16 17:54:14.656799; freshness should be verified.

Geography

Lord Howe Rise, Southwest Pacific Ocean.