Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance
The Byers Group, exposed on Byers Peninsula, Livingston Island and Snow Island, Antarctica, is a mudstone-dominated sequence deposited in a fore-arc setting. Palynological studies on parts of the Byers Group have provided new data on Early Cretaceous biostratigraphy, palaeoenvironments and palaeocli...
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1996
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ftnerc:oai:nora.nerc.ac.uk:515026 2023-05-15T13:49:33+02:00 Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance Duane, Ailbhe M. 1996-03 http://nora.nerc.ac.uk/id/eprint/515026/ https://doi.org/10.1016/0034-6667(95)00094-1 unknown Elsevier Duane, Ailbhe M. 1996 Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance. Review of Palaeobotany and Palynology, 91 (1-4). 241-281. https://doi.org/10.1016/0034-6667(95)00094-1 <https://doi.org/10.1016/0034-6667(95)00094-1> Publication - Article PeerReviewed 1996 ftnerc https://doi.org/10.1016/0034-6667(95)00094-1 2023-02-04T19:43:51Z The Byers Group, exposed on Byers Peninsula, Livingston Island and Snow Island, Antarctica, is a mudstone-dominated sequence deposited in a fore-arc setting. Palynological studies on parts of the Byers Group have provided new data on Early Cretaceous biostratigraphy, palaeoenvironments and palaeoclimate. Dinoflagellate cyst assemblages date the President Beaches Formation as latest Early Berriasian-Berriasian, and a latest Berriasian-earliest Valanginian to Middle Valanginian age is suggested for the Chester Cone Formation. The boundary between the President Beaches and Chester Cone formations is dated as latest Berriasian. Dinoflagellate cyst assemblages permit correlation of the marine mudstones from Snow Island (President Head) within the Byers Group stratigraphy of Byers Peninsula. A marginal, shallow-marine palaeoenvironment is indicated by the palynological content of the Byers Group. Occasionally, there is evidence of slightly deeper marine influence within the President Beaches Formation. The Chester Cone Formation records increased terrestrial influence and possibly exhibits a non-marine signature towards the top of the sequence. Parts of the Chester Cone Formation are affected by reworking. A temperate palaeoclimate with occasional high humidity is suggested for the Byers Group. The land vegetation probably consisted of a coniferous forest with abundant podocarps and araucarians, a fern understorey and minor amounts of lycopods and bryophytes. The Byers Group palynoflora shows strongest affiliation to those from the Mesozoic of Australia and southern South America, although marked provincialism is evident within the Valanginian marine microplankton content. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Livingston Island Snow Island Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Byers ENVELOPE(-60.283,-60.283,-63.900,-63.900) Byers peninsula ENVELOPE(-61.066,-61.066,-62.633,-62.633) Snow Island ENVELOPE(-61.383,-61.383,-62.776,-62.776) President Head ENVELOPE(-61.202,-61.202,-62.726,-62.726) Chester Cone ENVELOPE(-61.085,-61.085,-62.636,-62.636) President Beaches ENVELOPE(-61.117,-61.117,-62.625,-62.625) Review of Palaeobotany and Palynology 91 1-4 241 281 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The Byers Group, exposed on Byers Peninsula, Livingston Island and Snow Island, Antarctica, is a mudstone-dominated sequence deposited in a fore-arc setting. Palynological studies on parts of the Byers Group have provided new data on Early Cretaceous biostratigraphy, palaeoenvironments and palaeoclimate. Dinoflagellate cyst assemblages date the President Beaches Formation as latest Early Berriasian-Berriasian, and a latest Berriasian-earliest Valanginian to Middle Valanginian age is suggested for the Chester Cone Formation. The boundary between the President Beaches and Chester Cone formations is dated as latest Berriasian. Dinoflagellate cyst assemblages permit correlation of the marine mudstones from Snow Island (President Head) within the Byers Group stratigraphy of Byers Peninsula. A marginal, shallow-marine palaeoenvironment is indicated by the palynological content of the Byers Group. Occasionally, there is evidence of slightly deeper marine influence within the President Beaches Formation. The Chester Cone Formation records increased terrestrial influence and possibly exhibits a non-marine signature towards the top of the sequence. Parts of the Chester Cone Formation are affected by reworking. A temperate palaeoclimate with occasional high humidity is suggested for the Byers Group. The land vegetation probably consisted of a coniferous forest with abundant podocarps and araucarians, a fern understorey and minor amounts of lycopods and bryophytes. The Byers Group palynoflora shows strongest affiliation to those from the Mesozoic of Australia and southern South America, although marked provincialism is evident within the Valanginian marine microplankton content. |
format |
Article in Journal/Newspaper |
author |
Duane, Ailbhe M. |
spellingShingle |
Duane, Ailbhe M. Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
author_facet |
Duane, Ailbhe M. |
author_sort |
Duane, Ailbhe M. |
title |
Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
title_short |
Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
title_full |
Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
title_fullStr |
Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
title_full_unstemmed |
Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance |
title_sort |
palynology of the byers group (late jurassic-early cretaceous) of livingston and snow islands, antarctic peninsula: its biostratigraphical and palaeoenvironmental significance |
publisher |
Elsevier |
publishDate |
1996 |
url |
http://nora.nerc.ac.uk/id/eprint/515026/ https://doi.org/10.1016/0034-6667(95)00094-1 |
long_lat |
ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-60.283,-60.283,-63.900,-63.900) ENVELOPE(-61.066,-61.066,-62.633,-62.633) ENVELOPE(-61.383,-61.383,-62.776,-62.776) ENVELOPE(-61.202,-61.202,-62.726,-62.726) ENVELOPE(-61.085,-61.085,-62.636,-62.636) ENVELOPE(-61.117,-61.117,-62.625,-62.625) |
geographic |
Antarctic Antarctic Peninsula Livingston Island Byers Byers peninsula Snow Island President Head Chester Cone President Beaches |
geographic_facet |
Antarctic Antarctic Peninsula Livingston Island Byers Byers peninsula Snow Island President Head Chester Cone President Beaches |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Livingston Island Snow Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Livingston Island Snow Island |
op_relation |
Duane, Ailbhe M. 1996 Palynology of the Byers Group (Late Jurassic-Early Cretaceous) of Livingston and Snow islands, Antarctic Peninsula: its biostratigraphical and palaeoenvironmental significance. Review of Palaeobotany and Palynology, 91 (1-4). 241-281. https://doi.org/10.1016/0034-6667(95)00094-1 <https://doi.org/10.1016/0034-6667(95)00094-1> |
op_doi |
https://doi.org/10.1016/0034-6667(95)00094-1 |
container_title |
Review of Palaeobotany and Palynology |
container_volume |
91 |
container_issue |
1-4 |
container_start_page |
241 |
op_container_end_page |
281 |
_version_ |
1766251584262504448 |