East African Rift Basalt Geochronology Data from the Peleketch Range

Whole rock 40Ar/39Ar incremental step-heating data for basalt samples from the Peleketch Range in West Turkana, Kenya. The dataset supports the article 'The transition to tectonic control of magmatism in the East African Rift System – the 20 Ma Samburu Event' submitted to Tectonics by Rooney et al. It was deposited by author John Kappelman to the Texas Data Repository and last updated on October 15, 2025.

Use Cases

• Calibrating the timing of tectonic events in the East African Rift based on argon isotope data.
• Modeling the transition from plume-driven to tectonically controlled magmatism mentioned in the description.
• Correlating volcanic stratigraphy in the Turkana region using geochronological benchmarks.
• Validating geodynamic models of rift evolution with empirical age data.

Strengths

• Data is directly linked to a peer-reviewed article submitted to Tectonics, providing academic context.
• Platform tags indicate specific domains: Geochronology, Tectonics, East African Rift, Basalt, and Geochemistry.
• The dataset was last updated on 2025-10-15, suggesting recent maintenance.

Limitations

• Row count and file size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The description metadata is limited; actual data quality requires manual inspection.

Provenance

Source

Texas Data Repository Harvested Dataverse

Collection Method

Whole rock 40Ar/39Ar incremental step-heating method on basalt samples.

Time Range

Centered on the 20 Ma Samburu Event.

Freshness

Last updated 2025-10-15 03:39:06

Geography

Peleketch Range in West Turkana, Kenya, East African Rift System.