Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)]
Siliceous-rich sediments of late Pliocene to early Pleistocene age at DSDP Site 278, located on the Antarctic Convergence, contain an excellent radiolarian biostratigraphic and paleoclimatic record. The radiolarian zonation indicates that the middle Pliocene is missing in a diconformity. Three radio...
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Scripps Institution of Oceanography
1975
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ftoceanrep:oai:oceanrep.geomar.de:27389 2023-05-15T13:48:22+02:00 Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] Keany, John Kennett, James P. 1975 text https://oceanrep.geomar.de/id/eprint/27389/ https://oceanrep.geomar.de/id/eprint/27389/1/1975_Keany-Kennett_Radiolaria_dsdp29_18.pdf http://www.deepseadrilling.org/29/volume/dsdp29_18.pdf https://doi.org/10.2973/dsdp.proc.29.118.1975 en eng Scripps Institution of Oceanography https://oceanrep.geomar.de/id/eprint/27389/1/1975_Keany-Kennett_Radiolaria_dsdp29_18.pdf Keany, J. and Kennett, J. P. (1975) Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)]. Initial Reports of The Deep Sea Drilling Project, 29 . pp. 757-767. DOI 10.2973/dsdp.proc.29.118.1975 <https://doi.org/10.2973/dsdp.proc.29.118.1975>. doi:10.2973/dsdp.proc.29.118.1975 cc_by_nc Article NonPeerReviewed 1975 ftoceanrep https://doi.org/10.2973/dsdp.proc.29.118.1975 2023-04-07T15:17:31Z Siliceous-rich sediments of late Pliocene to early Pleistocene age at DSDP Site 278, located on the Antarctic Convergence, contain an excellent radiolarian biostratigraphic and paleoclimatic record. The radiolarian zonation indicates that the middle Pliocene is missing in a diconformity. Three radiolarian zones are recognized above the disconformity, and from comparison with previous piston core studies, indicate a continuous biostratigraphic sequence from the early part of the Brunhes Normal paleomagnetic epoch (0.69 m.y. B.P.) to the earliest part of the Matuyama Reversed Epoch (2.40 m.y. B.P.). Oscillations in the frequency of the cool-water radiolarian Antarctissa strelkovi indicate 9 or 10 warm-water episodes during that part of the Matuyama Reversed Epoch represented, with one warm-water episode inferred to be missing in the disconformity. The most important radiolarian species are illustrated by SEM and LM photographs. Article in Journal/Newspaper Antarc* Antarctic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic The Antarctic |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Siliceous-rich sediments of late Pliocene to early Pleistocene age at DSDP Site 278, located on the Antarctic Convergence, contain an excellent radiolarian biostratigraphic and paleoclimatic record. The radiolarian zonation indicates that the middle Pliocene is missing in a diconformity. Three radiolarian zones are recognized above the disconformity, and from comparison with previous piston core studies, indicate a continuous biostratigraphic sequence from the early part of the Brunhes Normal paleomagnetic epoch (0.69 m.y. B.P.) to the earliest part of the Matuyama Reversed Epoch (2.40 m.y. B.P.). Oscillations in the frequency of the cool-water radiolarian Antarctissa strelkovi indicate 9 or 10 warm-water episodes during that part of the Matuyama Reversed Epoch represented, with one warm-water episode inferred to be missing in the disconformity. The most important radiolarian species are illustrated by SEM and LM photographs. |
format |
Article in Journal/Newspaper |
author |
Keany, John Kennett, James P. |
spellingShingle |
Keany, John Kennett, James P. Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
author_facet |
Keany, John Kennett, James P. |
author_sort |
Keany, John |
title |
Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
title_short |
Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
title_full |
Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
title_fullStr |
Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
title_full_unstemmed |
Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)] |
title_sort |
pliocene-pleistocene radiolarian biostratigraphy and paleoclimatology at dsdp site 278 on the antarctic convergence : [with 3 plates (16+16+12 photos)] |
publisher |
Scripps Institution of Oceanography |
publishDate |
1975 |
url |
https://oceanrep.geomar.de/id/eprint/27389/ https://oceanrep.geomar.de/id/eprint/27389/1/1975_Keany-Kennett_Radiolaria_dsdp29_18.pdf http://www.deepseadrilling.org/29/volume/dsdp29_18.pdf https://doi.org/10.2973/dsdp.proc.29.118.1975 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://oceanrep.geomar.de/id/eprint/27389/1/1975_Keany-Kennett_Radiolaria_dsdp29_18.pdf Keany, J. and Kennett, J. P. (1975) Pliocene-Pleistocene radiolarian biostratigraphy and paleoclimatology at DSDP Site 278 on the Antarctic Convergence : [with 3 plates (16+16+12 photos)]. Initial Reports of The Deep Sea Drilling Project, 29 . pp. 757-767. DOI 10.2973/dsdp.proc.29.118.1975 <https://doi.org/10.2973/dsdp.proc.29.118.1975>. doi:10.2973/dsdp.proc.29.118.1975 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.2973/dsdp.proc.29.118.1975 |
_version_ |
1766249173533851648 |