Data · collection
Exposure ages of glacial deposits, Reedy Glacier, Transantarctic Mountains
Listed in NASA Earthdata CMR
This data set consists of exposure ages for glacial deposits on nunataks and ice-free areas adjacent to Reedy Glacier, Transantarctic Mountains.
Description
Most samples are glacially transported clasts exposed during the last glacial period or by subsequent retreat of the glacier, ca. 16,000 yr B.P. to present. There are also data from a few samples from older deposits, which may have more complicated exposure histories.
For these samples, the exposure ages indicated should be treated as lower limits. The ages are based on concentrations of the cosmic-ray-produced nuclide Be-10. The primary data are sample locations and exposure ages.
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Ages are calculated using currently accepted nuclide production rates and correction factors, as described in the footnotes. The data set also contains chemical and isotopic data needed to re-compute exposure ages if nuclide production rates or correction factors are revised in future.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214590429-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214590429-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Glaciation · Glacier Elevation/Ice Sheet Elevation · Ice Extent · Land Records · Not provided
- Inferred from text
- Physical geography and environmental geoscience 71%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214590429-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3709 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (71%) |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glacier-elevation-ice-sheet-elevation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/ice-extent | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/paleoclimate/land-records | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/paleoclimate/land-records/glaciation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |