Stratigraphy of the Cretaceous/Paleogene boundary interval at the Lord Howe Rise, Southwes

Biostratigraphic, magnetostratigraphic, and geochemical data from Deep Sea Drilling Project Leg 21 Site 208 cores on the Lord Howe Rise. The data cover sediment depths from 540 to 590 meters below seafloor, capturing the Maastrichtian to Selandian interval. This dataset was published in GSA Bulletin in 2021 by researchers including Junichiro Kuroda and Kyoko Hagino.

Use Cases

• Calibrating the Cretaceous/Paleogene boundary based on biostratigraphic data from calcareous nannofossils.
• Analyzing carbon isotope (δ13Ccarb) shifts across the K/Pg boundary interval.
• Identifying impact signals using osmium concentration and isotopic composition (187Os/188Os) data.
• Assessing sediment continuity and deposition rates around a major geological boundary.

Strengths

• Integrates multiple data types: biostratigraphic, magnetostratigraphic, and geochemical.
• Provides depth-specific data points between 540 and 590 meters below seafloor.
• Includes osmium isotopic ratios with values as low as 0.12-0.16, relevant for impact identification.
• Linked to a peer-reviewed publication (GSA Bulletin, 2021) with a specific DOI.

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 K/Pg boundary.

Provenance

Source

Australian Ocean Data Network via data_gov_au, based on research published in GSA Bulletin.

Collection Method

Data gathered from cores recovered during Deep Sea Drilling Project (DSDP) Leg 21 at Site 208.

Time Range

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

Freshness

Last updated 2026-04-10 17:29:24.795251; freshness should be verified.

Geography

Lord Howe Rise, Southwest Pacific Ocean.