Eocene microplankton from La Meseta Formation, northern Seymour Island
Twenty two samples collected from the Tertiary La Meseta Formation of Cape Wiman, Seymour Island, Antarctic Peninsula yielded abundant and moderately diverse assemblages of marine palynoflora, dominated by dinoflagellate cysts, together with acritarchs and chlorophyta. The assemblages can be divided...
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Cambridge University Press
1992
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Online Access: | http://nora.nerc.ac.uk/id/eprint/518377/ https://doi.org/10.1017/S0954102092000506 |
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ftnerc:oai:nora.nerc.ac.uk:518377 2023-05-15T13:49:34+02:00 Eocene microplankton from La Meseta Formation, northern Seymour Island Cocozza, Christopher D. Clarke, Ciara M. 1992-09 http://nora.nerc.ac.uk/id/eprint/518377/ https://doi.org/10.1017/S0954102092000506 unknown Cambridge University Press Cocozza, Christopher D.; Clarke, Ciara M. 1992 Eocene microplankton from La Meseta Formation, northern Seymour Island. Antarctic Science, 4 (03). 355-362. https://doi.org/10.1017/S0954102092000506 <https://doi.org/10.1017/S0954102092000506> Botany Publication - Article PeerReviewed 1992 ftnerc https://doi.org/10.1017/S0954102092000506 2023-02-04T19:45:38Z Twenty two samples collected from the Tertiary La Meseta Formation of Cape Wiman, Seymour Island, Antarctic Peninsula yielded abundant and moderately diverse assemblages of marine palynoflora, dominated by dinoflagellate cysts, together with acritarchs and chlorophyta. The assemblages can be divided into three association: Association 1, characterized by low diversity dinoflagellate assemblage of late Early Eocene age which are dominated by Enigmadinium cylindrifloriferum; Association 2 characterized by more diverse dinoflagellate cyst assemblages, which show a marked decrease in the dominance of E. cylindrifloriferum, and an increase in relative abundance of Areosphaeridium cf. diktyoplokus; and Association 3 which is characterized by a decrease in dinoflagellate cyst diversity up section. Changes in dinoflagellate cyst dominance and diversity throughout the section suggests a gradation from a stressed, shallow marine palaeoenvironment to a more open near-shore, shallow marine system becoming progressively more nearshore up section. The assemblages are no older than late Early Eocene in age, and possibly as young as Mid–Late Eocene. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Seymour Island Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) Cape Wiman ENVELOPE(-56.633,-56.633,-64.217,-64.217) Antarctic Science 4 3 355 362 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Botany |
spellingShingle |
Botany Cocozza, Christopher D. Clarke, Ciara M. Eocene microplankton from La Meseta Formation, northern Seymour Island |
topic_facet |
Botany |
description |
Twenty two samples collected from the Tertiary La Meseta Formation of Cape Wiman, Seymour Island, Antarctic Peninsula yielded abundant and moderately diverse assemblages of marine palynoflora, dominated by dinoflagellate cysts, together with acritarchs and chlorophyta. The assemblages can be divided into three association: Association 1, characterized by low diversity dinoflagellate assemblage of late Early Eocene age which are dominated by Enigmadinium cylindrifloriferum; Association 2 characterized by more diverse dinoflagellate cyst assemblages, which show a marked decrease in the dominance of E. cylindrifloriferum, and an increase in relative abundance of Areosphaeridium cf. diktyoplokus; and Association 3 which is characterized by a decrease in dinoflagellate cyst diversity up section. Changes in dinoflagellate cyst dominance and diversity throughout the section suggests a gradation from a stressed, shallow marine palaeoenvironment to a more open near-shore, shallow marine system becoming progressively more nearshore up section. The assemblages are no older than late Early Eocene in age, and possibly as young as Mid–Late Eocene. |
format |
Article in Journal/Newspaper |
author |
Cocozza, Christopher D. Clarke, Ciara M. |
author_facet |
Cocozza, Christopher D. Clarke, Ciara M. |
author_sort |
Cocozza, Christopher D. |
title |
Eocene microplankton from La Meseta Formation, northern Seymour Island |
title_short |
Eocene microplankton from La Meseta Formation, northern Seymour Island |
title_full |
Eocene microplankton from La Meseta Formation, northern Seymour Island |
title_fullStr |
Eocene microplankton from La Meseta Formation, northern Seymour Island |
title_full_unstemmed |
Eocene microplankton from La Meseta Formation, northern Seymour Island |
title_sort |
eocene microplankton from la meseta formation, northern seymour island |
publisher |
Cambridge University Press |
publishDate |
1992 |
url |
http://nora.nerc.ac.uk/id/eprint/518377/ https://doi.org/10.1017/S0954102092000506 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.633,-56.633,-64.217,-64.217) |
geographic |
Antarctic Antarctic Peninsula Seymour Seymour Island Cape Wiman |
geographic_facet |
Antarctic Antarctic Peninsula Seymour Seymour Island Cape Wiman |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Seymour Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Seymour Island |
op_relation |
Cocozza, Christopher D.; Clarke, Ciara M. 1992 Eocene microplankton from La Meseta Formation, northern Seymour Island. Antarctic Science, 4 (03). 355-362. https://doi.org/10.1017/S0954102092000506 <https://doi.org/10.1017/S0954102092000506> |
op_doi |
https://doi.org/10.1017/S0954102092000506 |
container_title |
Antarctic Science |
container_volume |
4 |
container_issue |
3 |
container_start_page |
355 |
op_container_end_page |
362 |
_version_ |
1766251715736109056 |