Data · collection
Palaeomagnetic measurements of red bed Beacon Supergroup rocks (Terra Cotta Siltstone and Aztec siltstone) samples from South Victoria Land
Listed in NASA Earthdata CMR
It had been previously found that sampled rocks from Beacon sandstones at Mt Bastion, Beacon Heights and Table Mountain were very weakly magnetised and their magnetic direction had been reset at the time of the massive dolerite intrusions during the Jurassic period.
Description
The reson for this is not clear and further investigation were conducted. Only the red beds which occur at two periods within the Beacon Supergroup were sampled.
The first period is near the base of the section - the Terra Cotta siltstone and probably Lower Devonian in age. The second is in the Upper Devonian, near the boundary with the Permian, called the Aztec siltstone. The Terra Cotta siltstone outcrops at Mt Kempe, Table Mountain and Knobhead were sampled and the Aztec siltstone outcrops at Portal Mountain, Alligator Peak and Mount Crean were sampled.
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Rock samples were collected using rock coring equipment. In addition, samples of the dykes (of Ordovician age) in the Wright and Miers Valley and the volcanic of Ross Island (strongly magnetised basalt from a series of flows on Observation Hill) were also collected. Palaeomagnetic measurements were made on all samples.
Links
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/C1214592072-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214592072-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- FIELD INVESTIGATION · LABORATORY · Not provided · Paleomagnetism · ROCK CORERS
- Inferred from text
- Magnetism and palaeomagnetism 78% · Tabular 65%
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214592072-SCIOPS | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:field:370607 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (78%) |
| concepts[instrument].gcmd_instrument:rock-corers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/geomagnetism/paleomagnetism | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:tabular | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:field-investigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:laboratory | 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 |