Stratigraphy of the K/Pg Boundary at Lord Howe Rise, Southwest Pacific

Deep Sea Drilling Project Leg 21 recovered Cenozoic and latest Cretaceous sediments at Site 208 on the Lord Howe Rise. The dataset provides new biostratigraphic, magnetostratigraphic, and geochemical data from cores at depths of 540-590 meters below seafloor to constrain stratigraphy around the Cretaceous/Paleogene boundary. The study, published in GSA Bulletin in 2021, suggests the sedimentary record captures a time interval close to the K/Pg bolide impact.

Use Cases

• Calibrating biostratigraphic zonations based on calcareous nannofossil data mentioned in the description
• Analyzing carbon isotope (δ13Ccarb) shifts across the K/Pg boundary interval for paleoenvironmental reconstruction
• Identifying the K/Pg boundary using osmium concentration and isotopic composition (187Os/188Os) data
• Correlating local stratigraphy at Site 208 with global K/Pg boundary records

Strengths

• Integrates multiple data types: biostratigraphic, magnetostratigraphic, and geochemical data from the same cores
• Provides depth-specific constraints, with the K/Pg boundary interval identified at 576.0-576.8 meters below seafloor
• Includes osmium isotopic data with values as low as 0.12-0.16, used for impact event identification

Limitations

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

Provenance

Source

Australian Ocean Data Network via data_gov_au, associated with Deep Sea Drilling Project Leg 21, Site 208

Collection Method

Data collected from sediment cores recovered during the Deep Sea Drilling Project.

Time Range

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

Freshness

Last updated 2026-06-27 18:05:23.686563; freshness should be verified

Geography

Lord Howe Rise, Southwest Pacific (Site 208)