A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate

A macroflora from John Peaks, Powell Island, contains Sagenopteris nilssoniana, Cladophlebis oblonga, Brachyphyllum sp., Elatocladus confertus , and Sphenopteris sp. The macroflora is best correlated with the Botany Bay Group flora, suggesting an Early to Middle Jurassic age for the Powell Island Co...

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Bibliographic Details
Published in:Antarctic Science
Main Author: Cantrill, David J.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2000
Subjects:
Antarctic
Antarctic Peninsula
Botany Bay
John Peaks
Powell Island
South Orkney Islands
The Antarctic
Antarc*
Antarctic Science
Antarctica
Online Access:http://dx.doi.org/10.1017/s0954102000000249
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102000000249
id crcambridgeupr:10.1017/s0954102000000249
record_format openpolar
spelling crcambridgeupr:10.1017/s0954102000000249 2024-10-06T13:43:02+00:00 A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate Cantrill, David J. 2000 http://dx.doi.org/10.1017/s0954102000000249 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102000000249 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 12, issue 2, page 185-195 ISSN 0954-1020 1365-2079 journal-article 2000 crcambridgeupr https://doi.org/10.1017/s0954102000000249 2024-09-11T04:04:02Z A macroflora from John Peaks, Powell Island, contains Sagenopteris nilssoniana, Cladophlebis oblonga, Brachyphyllum sp., Elatocladus confertus , and Sphenopteris sp. The macroflora is best correlated with the Botany Bay Group flora, suggesting an Early to Middle Jurassic age for the Powell Island Conglomerate. This age supports new interpretations for the geological evolution of the Antarctic Peninsula that suggest the initial phase of Gondwana break-up was manifested as small rift grabens with continental deposits. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Powell Island South Orkney Islands Cambridge University Press Antarctic Antarctic Peninsula Botany Bay ENVELOPE(-57.892,-57.892,-63.678,-63.678) John Peaks ENVELOPE(-45.500,-45.500,-60.717,-60.717) Powell Island ENVELOPE(-45.050,-45.050,-60.700,-60.700) South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) The Antarctic Antarctic Science 12 2 185 195
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
description A macroflora from John Peaks, Powell Island, contains Sagenopteris nilssoniana, Cladophlebis oblonga, Brachyphyllum sp., Elatocladus confertus , and Sphenopteris sp. The macroflora is best correlated with the Botany Bay Group flora, suggesting an Early to Middle Jurassic age for the Powell Island Conglomerate. This age supports new interpretations for the geological evolution of the Antarctic Peninsula that suggest the initial phase of Gondwana break-up was manifested as small rift grabens with continental deposits.
format Article in Journal/Newspaper
author Cantrill, David J.
spellingShingle Cantrill, David J.
A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
author_facet Cantrill, David J.
author_sort Cantrill, David J.
title A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
title_short A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
title_full A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
title_fullStr A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
title_full_unstemmed A new macroflora from the South Orkney Islands, Antarctica: evidence of an Early to Middle Jurassic age for the Powell Island Conglomerate
title_sort new macroflora from the south orkney islands, antarctica: evidence of an early to middle jurassic age for the powell island conglomerate
publisher Cambridge University Press (CUP)
publishDate 2000
url http://dx.doi.org/10.1017/s0954102000000249
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102000000249
long_lat ENVELOPE(-57.892,-57.892,-63.678,-63.678)
ENVELOPE(-45.500,-45.500,-60.717,-60.717)
ENVELOPE(-45.050,-45.050,-60.700,-60.700)
ENVELOPE(-45.500,-45.500,-60.583,-60.583)
geographic Antarctic
Antarctic Peninsula
Botany Bay
John Peaks
Powell Island
South Orkney Islands
The Antarctic
geographic_facet Antarctic
Antarctic Peninsula
Botany Bay
John Peaks
Powell Island
South Orkney Islands
The Antarctic
genre Antarc*
Antarctic
Antarctic Peninsula
Antarctic Science
Antarctica
Powell Island
South Orkney Islands
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Antarctic Science
Antarctica
Powell Island
South Orkney Islands
op_source Antarctic Science
volume 12, issue 2, page 185-195
ISSN 0954-1020 1365-2079
op_rights https://www.cambridge.org/core/terms
op_doi https://doi.org/10.1017/s0954102000000249
container_title Antarctic Science
container_volume 12
container_issue 2
container_start_page 185
op_container_end_page 195
_version_ 1812178420228947968

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