Data · collection
The structure and origin of the Strand Moraines, McMurdo Sound
Listed in NASA Earthdata CMR
Geological work on the Strand Moraines, an area believed to be partly grounded ice cored moraine, that may be a relic of the Last Glaciation 20,000-50,000 years ago, was conducted.
Description
A study to account for the origin of the moraines and to relate this to the Antarctic Ice Sheet History was conducted. The orientations of the internal ice structure and ice bound sediment layers was structurally mapped as well as the orientations of ice cracks and lineaments depicted by continuous lag covered ice mounds.
Ice samples were collected for oxygen isotope analysis to determine the origin of the ice. Debris was sampled from the present moraine and internal debris. Present moraine appeared as a log on the surface of the ice body.
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It was examined in terms of thickness and analysed in relation to ablation rate and mineralogical composition. Internal debris occurs as sediment bands within ice layering and is exposed as outcrops on the slopes of ice mounds. Qualitative estimations of compositions were made and related to ablation rate and lag thickness.
Present day weathering and hydrological activities acting on the area were observed to relate to structure and ice bound debris thickness and distribution.
Links
Get the data
- pet.gns.cri.nz ↗
PETLAB is a New Zealand rock catalogue and geoanalytical database.
download · from NASA CMR
Documentation and papers
- victoria.ac.nz /antarctic ↗
The Victoria University of Wellington Antarctic Research Centre homepage. The publications and data may be available through this group, otherwise contact the investigator.
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214592077-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214592077-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- CORING DEVICES · FIELD INVESTIGATION · FIELD SURVEYS · Glaciers · Glacier Thickness/Ice Sheet Thickness · GROUND-BASED OBSERVATIONS · Isotopes · Not provided · Sediments · VISUAL OBSERVATIONS
Provenance · 1 source records, 16 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214592077-SCIOPS | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:coring-devices | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:visual-observations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glaciers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glacier-thickness-ice-sheet-thickness | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/paleoclimate/ice-core-records/isotopes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/paleoclimate/land-records/sediments | 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-based-observations | 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 |