Rhenium-Osmium Isotope Data for OAE1a Sections in Japan and France

British Geological Survey data contains rhenium-osmium abundance and isotope measurements from Cretaceous stratigraphic sections in Hokkaido, Japan, and Sauzeries, France. The dataset supports analysis of the Ocean Anoxic Event 1a (OAE1a) driving mechanisms, as referenced in a 2024 Science Advances publication.

Use Cases

• Analyze rhenium-osmium isotope ratios to date and correlate the approximately 2000-meter-thick Cretaceous stratigraphic sections.
• Model the geochemical cycling of rhenium and osmium abundances during the Ocean Anoxic Event 1a (OAE1a) interval.
• Compare rhenium-osmium data from organic-bearing siltstone and siliceous mudstone in Japan with marl-dominated intervals in France.

Strengths

• Data is directly linked to a peer-reviewed publication in Science Advances (2024).
• Covers two distinct geographic locations: Hokkaido, Japan, and Sauzeries, France.
• Includes measurements from a substantial approximately 2000-meter-thick stratigraphic section in Japan.

Limitations

• Sample size and specific row count are unknown, limiting statistical power assessment.
• Data for the Sauzeries section is noted as currently unpublished, potentially lacking full methodological validation.
• The dataset appears focused on a specific geological event (OAE1a), limiting broader geochemical applications.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Sample collection in August 2021, principally funded by an NSF-NERC award.

Time Range

Cretaceous period, specifically Ocean Anoxic Event 1a (OAE1a).

Freshness

Last updated in March 2026.

Geography

Nakatengu Creek and Soashibetsu-gawa sections in Hokkaido, Japan; Sauzeries section in France.