Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ...
A total of 145 samples were analyzed for palynology, and all were found to be productive. Residues are dominated by pollen, terrestrial spores, and land plant tissues. Marine palynomorphs occur in all samples, which allowed us to recognize five Miocene dinocyst assemblage zones. Dinocyst assemblages...
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PANGAEA - Publishing Network for Geoscientific and Environmental Data
1989
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ftdatacite:10.15468/m2cabu 2023-12-31T10:04:54+01:00 Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... Head, Martin J Norris, Geoffrey Mudie, Peta J 1989 https://dx.doi.org/10.15468/m2cabu https://www.gbif.org/dataset/7cd4427a-f762-11e1-a439-00145eb45e9a en eng PANGAEA - Publishing Network for Geoscientific and Environmental Data https://dx.doi.org/10.1594/pangaea.743927 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Dataset OCCURRENCE dataset 1989 ftdatacite https://doi.org/10.15468/m2cabu10.1594/pangaea.743927 2023-12-01T10:29:57Z A total of 145 samples were analyzed for palynology, and all were found to be productive. Residues are dominated by pollen, terrestrial spores, and land plant tissues. Marine palynomorphs occur in all samples, which allowed us to recognize five Miocene dinocyst assemblage zones. Dinocyst assemblages indicate cool-water conditions and suggest a neritic rather than fully oceanic environment, with not only North Atlantic and Norwegian Sea affinities, but also containing both notable protoperidiniacean and possible endemic elements. Dinocyst assemblages indicate an early Miocene age for the bottom of Hole 645E and an age no younger than early late Miocene (Sample 105-645E-24R, CC) near the top of the interval studied. These age assignments provide an estimated initiation of ice rafting in Baffin Bay at between 7.4 and 9.5 Ma. Increased terrigenous influx and apparent disappearance of certain dinocyst taxa occur in the middle to late Miocene and may be related to oceanographic changes or climatic deterioration. ... Dataset Baffin Bay Baffin Bay Baffin North Atlantic Norwegian Sea DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
A total of 145 samples were analyzed for palynology, and all were found to be productive. Residues are dominated by pollen, terrestrial spores, and land plant tissues. Marine palynomorphs occur in all samples, which allowed us to recognize five Miocene dinocyst assemblage zones. Dinocyst assemblages indicate cool-water conditions and suggest a neritic rather than fully oceanic environment, with not only North Atlantic and Norwegian Sea affinities, but also containing both notable protoperidiniacean and possible endemic elements. Dinocyst assemblages indicate an early Miocene age for the bottom of Hole 645E and an age no younger than early late Miocene (Sample 105-645E-24R, CC) near the top of the interval studied. These age assignments provide an estimated initiation of ice rafting in Baffin Bay at between 7.4 and 9.5 Ma. Increased terrigenous influx and apparent disappearance of certain dinocyst taxa occur in the middle to late Miocene and may be related to oceanographic changes or climatic deterioration. ... |
format |
Dataset |
author |
Head, Martin J Norris, Geoffrey Mudie, Peta J |
spellingShingle |
Head, Martin J Norris, Geoffrey Mudie, Peta J Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
author_facet |
Head, Martin J Norris, Geoffrey Mudie, Peta J |
author_sort |
Head, Martin J |
title |
Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
title_short |
Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
title_full |
Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
title_fullStr |
Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
title_full_unstemmed |
Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) ... |
title_sort |
stratigraphic distribution of marine palynomorph species recorded for the miocene of odp hole 105-645e (table 1) ... |
publisher |
PANGAEA - Publishing Network for Geoscientific and Environmental Data |
publishDate |
1989 |
url |
https://dx.doi.org/10.15468/m2cabu https://www.gbif.org/dataset/7cd4427a-f762-11e1-a439-00145eb45e9a |
genre |
Baffin Bay Baffin Bay Baffin North Atlantic Norwegian Sea |
genre_facet |
Baffin Bay Baffin Bay Baffin North Atlantic Norwegian Sea |
op_relation |
https://dx.doi.org/10.1594/pangaea.743927 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15468/m2cabu10.1594/pangaea.743927 |
_version_ |
1786836354031681536 |