Data · collection
Dating of the Ross Sea glaciations from the Koettlitz Glacier region
Listed in NASA Earthdata CMR
The interaction between the Koettlitz Glacier and Trough Lake was determined as a model for the Quaternary proglacial lakes which occupy many of the coastal valleys of the McMurdo Oasis.
Description
Trough Lake in Pyramid Trough was surveyed and twelve holes were drilled through the ice surface to enable bathymetric, temperature and radiation measurements to be made. Water and sediment samples were taken and analyzed.
Mounds of ice rafted glacial debris was found along the lake shores often with silts and algae beneath them. Samples of the algae were collected for dating. Sites between Trough Lake and Lake Miers had algae and carbonate sampled for 14C and U/Th dating to determine the age of the maximum expansion of the Ross Sea ice sheet.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214593346-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214593346-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Age Determinations · Bedrock Lithology · FIELD INVESTIGATION · FIELD SURVEYS · GROUND STATIONS
- Inferred from text
- Quaternary environments 77%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214593346-SCIOPS | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:field:370905 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (77%) |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/age-determinations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/bedrock-lithology | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-investigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ground-stations | 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 |