Investigation of Quaternary foraminifera in sediment core CRP-1 from the Ross Sea, Antarctica
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
1998
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867171355497070592 |
|---|---|
| author | Webb, Peter-Noel Strong, C Percy |
| author_facet | Webb, Peter-Noel Strong, C Percy |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Foraminifera are examined in twenty-six samples from a 44 metre succession of Quaternary glacial sediments recovered from the CRP-1 drillhole on Roberts Ridge, southwestern Ross Sea, Antarctica. In situ marine assemblages were documented in at least three of the six lithostratigraphic units, and it is likely that the remaining three interbedded diamicton units are also marine in origin. Peak foraminiferal diversities are documented in Unit 3.1 (73 species) and Unit 2.2 (32 species). Calcareous benthics dominate the assemblages, but may be accompanied by abundant occurrences of the planktonic Neogloboquadrina pachyderma. Low diversity agglutinated faunas appear in the uppermost strata of Units 4.1 and 2.2. A close relationship between lithofacics and foraminiferal biofacies points to marine environments that alternated between proximity to and distance from active glaciers and iceshelf fronts, with associated variations in salinity, sea-surface ice cover and the levels of rainout from debris-laden ice. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_510745 |
| institution | PANGAEA |
| language | en |
| publishDate | 1998 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Investigation of Quaternary foraminifera in sediment core CRP-1 from the Ross Sea, Antarctica Webb, Peter-Noel Strong, C Percy 16 km ENE Cape Roberts; Cape Roberts Project; Core wireline system; CRP; CRP-1; CRP-1__Campaign; CWS; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice Foraminifera are examined in twenty-six samples from a 44 metre succession of Quaternary glacial sediments recovered from the CRP-1 drillhole on Roberts Ridge, southwestern Ross Sea, Antarctica. In situ marine assemblages were documented in at least three of the six lithostratigraphic units, and it is likely that the remaining three interbedded diamicton units are also marine in origin. Peak foraminiferal diversities are documented in Unit 3.1 (73 species) and Unit 2.2 (32 species). Calcareous benthics dominate the assemblages, but may be accompanied by abundant occurrences of the planktonic Neogloboquadrina pachyderma. Low diversity agglutinated faunas appear in the uppermost strata of Units 4.1 and 2.2. A close relationship between lithofacics and foraminiferal biofacies points to marine environments that alternated between proximity to and distance from active glaciers and iceshelf fronts, with associated variations in salinity, sea-surface ice cover and the levels of rainout from debris-laden ice. |
| title | Investigation of Quaternary foraminifera in sediment core CRP-1 from the Ross Sea, Antarctica |
| topic | 16 km ENE Cape Roberts; Cape Roberts Project; Core wireline system; CRP; CRP-1; CRP-1__Campaign; CWS; off Cape Roberts, Ross Sea, Antarctica; Sampling/drilling ice |
| url | https://doi.org/10.1594/PANGAEA.510745 |