Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean
Includes bibliograhpical references. Includes illustrations and maps. Biostratigraphic analysis of radiolarians from the highlatitude Southern Ocean has been documented for two piston cores. ARA Islas Orcadas Core 0775-47, located on the Maurice Ewing Bank at the eastern edge of the Falkland Plateau...
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Northern Illinois University
1980
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ftnorthillinuni:oai:commons.lib.niu.edu:10843/17952 2023-05-15T13:34:51+02:00 Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean Olson, Christopher J. (Student of geology) Ling, Hsin-Yi, 1930- Department of Geology 1980 ix, 197 pages application/pdf https://commons.lib.niu.edu/handle/10843/17952 eng eng Northern Illinois University https://commons.lib.niu.edu/handle/10843/17952 NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors. Radiolaria Fossil Paleontology--Paleocene Paleontology--Neogene Text Dissertation/Thesis 1980 ftnorthillinuni 2020-09-22T08:43:34Z Includes bibliograhpical references. Includes illustrations and maps. Biostratigraphic analysis of radiolarians from the highlatitude Southern Ocean has been documented for two piston cores. ARA Islas Orcadas Core 0775-47, located on the Maurice Ewing Bank at the eastern edge of the Falkland Plateau off South America,is older than the middle Miocene age assigned by Ciesielski and Wise (1977). A new zone, Stylosphaera haeckeliana (?), of late Oligocene age is proposed for the lower section of the core. A major late Miocene erosional unconformity separating lower Miocene sediments below from lower Pliocene sediments above represents a time loss of approximately 10 M.Y. and is related to increased bottom current activity associated with glaciation on the Antarctic continent. Paleomagnetic history for a second core, Eltanin 27-3, located on the south flank of the Albatross Cordillera, off Cape Adare in the Pacific Ocean sector suggests that sedimentation rates have been nearly constant since middle Gilbert (Pliocene) time. Absence of key, high-latitude zonal taxa in this core seems to be related to fluctuations in the geographical distribution of some radiolarian species in response to changing climatic conditions around Antarctica rather than the presence of sedimentary hiatus. M.S. (Master of Science) Thesis Antarc* Antarctic Antarctica Southern Ocean Northern Illinois University (NIU): Huskie Commons Repository Antarctic Southern Ocean The Antarctic Pacific Maurice ENVELOPE(-55.817,-55.817,-63.133,-63.133) Ewing ENVELOPE(-61.257,-61.257,-69.924,-69.924) Orcadas ENVELOPE(-44.717,-44.717,-60.750,-60.750) Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Maurice Ewing Bank ENVELOPE(-43.500,-43.500,-50.667,-50.667) |
institution |
Open Polar |
collection |
Northern Illinois University (NIU): Huskie Commons Repository |
op_collection_id |
ftnorthillinuni |
language |
English |
topic |
Radiolaria Fossil Paleontology--Paleocene Paleontology--Neogene |
spellingShingle |
Radiolaria Fossil Paleontology--Paleocene Paleontology--Neogene Olson, Christopher J. (Student of geology) Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
topic_facet |
Radiolaria Fossil Paleontology--Paleocene Paleontology--Neogene |
description |
Includes bibliograhpical references. Includes illustrations and maps. Biostratigraphic analysis of radiolarians from the highlatitude Southern Ocean has been documented for two piston cores. ARA Islas Orcadas Core 0775-47, located on the Maurice Ewing Bank at the eastern edge of the Falkland Plateau off South America,is older than the middle Miocene age assigned by Ciesielski and Wise (1977). A new zone, Stylosphaera haeckeliana (?), of late Oligocene age is proposed for the lower section of the core. A major late Miocene erosional unconformity separating lower Miocene sediments below from lower Pliocene sediments above represents a time loss of approximately 10 M.Y. and is related to increased bottom current activity associated with glaciation on the Antarctic continent. Paleomagnetic history for a second core, Eltanin 27-3, located on the south flank of the Albatross Cordillera, off Cape Adare in the Pacific Ocean sector suggests that sedimentation rates have been nearly constant since middle Gilbert (Pliocene) time. Absence of key, high-latitude zonal taxa in this core seems to be related to fluctuations in the geographical distribution of some radiolarian species in response to changing climatic conditions around Antarctica rather than the presence of sedimentary hiatus. M.S. (Master of Science) |
author2 |
Ling, Hsin-Yi, 1930- Department of Geology |
format |
Thesis |
author |
Olson, Christopher J. (Student of geology) |
author_facet |
Olson, Christopher J. (Student of geology) |
author_sort |
Olson, Christopher J. (Student of geology) |
title |
Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
title_short |
Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
title_full |
Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
title_fullStr |
Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
title_full_unstemmed |
Late Paleogene and Neogene radiolarian biostratigraphy of the Southern Ocean |
title_sort |
late paleogene and neogene radiolarian biostratigraphy of the southern ocean |
publisher |
Northern Illinois University |
publishDate |
1980 |
url |
https://commons.lib.niu.edu/handle/10843/17952 |
long_lat |
ENVELOPE(-55.817,-55.817,-63.133,-63.133) ENVELOPE(-61.257,-61.257,-69.924,-69.924) ENVELOPE(-44.717,-44.717,-60.750,-60.750) ENVELOPE(-50.000,-50.000,-51.000,-51.000) ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) ENVELOPE(-43.500,-43.500,-50.667,-50.667) |
geographic |
Antarctic Southern Ocean The Antarctic Pacific Maurice Ewing Orcadas Falkland Plateau Adare Cape Adare Maurice Ewing Bank |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific Maurice Ewing Orcadas Falkland Plateau Adare Cape Adare Maurice Ewing Bank |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
https://commons.lib.niu.edu/handle/10843/17952 |
op_rights |
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors. |
_version_ |
1766058541980844032 |