Exposure ages for glacial deposits and bedrock surfaces in the Ford Ranges of Marie Byrd Land, West Antarctica, based on concentrations of cosmic-ray-produced nuclides Be-10 and Al-26. The dataset contains sample locations, calculated ages, and the full chemical and isotopic analyses for potential recalculation. Data was produced by SCIOPS.
Use Cases
- Reconstructing ice retreat chronology in Marie Byrd Land using sample_location and exposure_age data.
- Calibrating regional paleoclimate models with exposure_age records from glacially transported clasts.
- Comparing nuclide production rates by re-computing exposure_age using the provided chemical and isotopic analysis details.
- Investigating complex exposure histories by analyzing the subset of bedrock_samples with longer records.
Strengths
- Includes full chemical and isotopic analysis details enabling age recalculation with future models.
- Covers exposure histories from the Last Glacial Maximum (10,500 yr B.P.) to present.
Limitations
- Sample count is unknown, potentially limiting statistical robustness.
- Geographic scope is restricted to the Ford Ranges in West Antarctica.
Provenance
- Source
- nasa_earthdata
- Collection Method
- Ages calculated from concentrations of cosmic-ray-produced nuclides Be-10 and Al-26 using accepted production rates and correction factors.
- Time Range
- Exposure events from approximately 10,500 years before present to present.
- Freshness
- null
- Geography
- Ford Ranges, Marie Byrd Land, West Antarctica.