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

Biostratigraphic, magnetostratigraphic, and geochemical data from Deep Sea Drilling Project Site 208 on the Lord Howe Rise. The dataset constrains stratigraphy around the K/Pg boundary using calcareous nannofossils, carbon isotopes, and osmium concentrations. It was published in GSA Bulletin in 2021 by researchers including Junichiro Kuroda.

Use Cases

• Correlating marine sediment layers across the K/Pg boundary based on biostratigraphic data on calcareous nannofossils.
• Analyzing the global carbon cycle perturbation using the negative shift in carbonate carbon isotopic composition (δ13Ccarb).
• Identifying the K/Pg bolide impact signal using osmium concentration and Os isotopic composition (187Os/188Os) data.
• Assessing sediment continuity and deposition rates around a major extinction boundary in a deep-sea environment.

Strengths

• Integrates multiple data types: biostratigraphic, magnetostratigraphic, and geochemical.
• Provides depth-specific constraints for the K/Pg boundary between 576.0-576.8 meters below seafloor.
• Data is linked to a peer-reviewed publication in GSA Bulletin (doi: 10.1130/B36112.1).

Limitations

• Row count and column-level documentation are absent; field semantics must be inferred after download.
• The study suggests the sedimentary record may not be completely continuous across the K/Pg boundary interval.

Provenance

Source

Geoscience Australia Data, derived from Deep Sea Drilling Project Leg 21, Site 208.

Collection Method

Data gathered from analysis of sediment cores.

Time Range

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

Freshness

Last updated 2026-04-20 01:12:31.220844; freshness should be verified.

Geography

Lord Howe Rise, Southwest Pacific.