Lake Chala Sediment Chronology and Isotope Data, 0 to >250 kyr BP

Over 250,000 years of sediment data from Lake Chala, Kenya/Tanzania, including tephra layers, Ar-dates, and stable isotope measurements. The dataset comprises six tables with chronological and geochemical data generated by researchers between 2017 and 2022. These data support the reconstruction of palaeoclimate from the Lake Chala sediment sequence.

Use Cases

• Calibrating sediment age models based on tephra layers and radiometric dates.
• Reconstructing past climate conditions based on stable isotope measurements.
• Correlating volcanic ash layers across regional sediment records.
• Analyzing long-term environmental changes in the Lake Chala basin.

Strengths

• Data spans more than 250,000 years, providing a long-term climate record.
• Includes analysis of 30 distinct tephra layers for chronological control.
• Combines multiple dating methods (tephra, 210Pb, 14C) in a Bayesian age model.
• Contains unpublished stable isotope data for the full length of the core.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified as the last update is listed as 2026-05-28.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Data generated from analysis of sediment cores, including tephra characterization, radiometric dating, and stable isotope measurement.

Time Range

0 to >250,000 years before present (BP)

Freshness

Last updated 2026-05-28 13:00:48.435751

Geography

Lake Chala, on the border of Kenya and Tanzania