The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains
The northern Prince Charles Mountains overlook the western side of the 700 km long Lambert Glacier–Amery Ice Shelf drainage system. Within these mountains, at Amery Oasis (70°50′S, 68°00′E) and Fisher Massif (71°31′S, 67°40′E), the Cenozoic glaciomarine Pagodroma Group consists of four uplifted Mioc...
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2001
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crcambridgeupr:10.1017/s095410200100061x 2024-03-03T08:36:34+00:00 The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains McKelvey, B.C. Hambrey, M.J. Harwood, D.M. Mabin, M.C.G. Webb, P.-N. Whitehead, J.M. 2001 http://dx.doi.org/10.1017/s095410200100061x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200100061X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 13, issue 4, page 455-468 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2001 crcambridgeupr https://doi.org/10.1017/s095410200100061x 2024-02-08T08:43:44Z The northern Prince Charles Mountains overlook the western side of the 700 km long Lambert Glacier–Amery Ice Shelf drainage system. Within these mountains, at Amery Oasis (70°50′S, 68°00′E) and Fisher Massif (71°31′S, 67°40′E), the Cenozoic glaciomarine Pagodroma Group consists of four uplifted Miocene and Pliocene–early Pleistocene formations here named the Mount Johnston, Fisher Bench, Battye Glacier and Bardin Bluffs formations. These are composed of massive and stratified diamicts, boulder gravels and minor laminated sandstones, siltstones and mudstones. Each formation rests on either Precambrian metamorphic rocks, or on Permo-Triassic fluvial strata. The unconformity surfaces are parts of the walls and floors of palaeofjords. The Miocene Fisher Bench Formation exceeds 350 m in thickness at Fisher Massif, where the yet older Miocene (or Oligocene) Mount Johnston Formation overlies basement rocks at up to 1400 m above sea level. Individual formations contain either Miocene diatoms, or else Pliocene–early Pleistocene diatom-foram assemblages. The diamicts are interpreted as fjordal ice-proximal or ice-contact sediments, deposited seawards of tidewater glacier fronts located some 250 to 300 km inland of the present ocean margin. Each formation records an ice recession following a glacial expansion. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctic Antarctic Science Battye Glacier Ice Sheet Ice Shelf Lambert Glacier Prince Charles Mountains Tidewater Cambridge University Press Antarctic East Antarctic Ice Sheet Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) Battye Glacier ENVELOPE(67.900,67.900,-70.867,-70.867) Bardin Bluffs ENVELOPE(68.133,68.133,-70.819,-70.819) Fisher Massif ENVELOPE(67.667,67.667,-72.317,-72.317) Mount Johnston ENVELOPE(172.783,172.783,-85.483,-85.483) Antarctic Science 13 4 455 468 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography McKelvey, B.C. Hambrey, M.J. Harwood, D.M. Mabin, M.C.G. Webb, P.-N. Whitehead, J.M. The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
The northern Prince Charles Mountains overlook the western side of the 700 km long Lambert Glacier–Amery Ice Shelf drainage system. Within these mountains, at Amery Oasis (70°50′S, 68°00′E) and Fisher Massif (71°31′S, 67°40′E), the Cenozoic glaciomarine Pagodroma Group consists of four uplifted Miocene and Pliocene–early Pleistocene formations here named the Mount Johnston, Fisher Bench, Battye Glacier and Bardin Bluffs formations. These are composed of massive and stratified diamicts, boulder gravels and minor laminated sandstones, siltstones and mudstones. Each formation rests on either Precambrian metamorphic rocks, or on Permo-Triassic fluvial strata. The unconformity surfaces are parts of the walls and floors of palaeofjords. The Miocene Fisher Bench Formation exceeds 350 m in thickness at Fisher Massif, where the yet older Miocene (or Oligocene) Mount Johnston Formation overlies basement rocks at up to 1400 m above sea level. Individual formations contain either Miocene diatoms, or else Pliocene–early Pleistocene diatom-foram assemblages. The diamicts are interpreted as fjordal ice-proximal or ice-contact sediments, deposited seawards of tidewater glacier fronts located some 250 to 300 km inland of the present ocean margin. Each formation records an ice recession following a glacial expansion. |
format |
Article in Journal/Newspaper |
author |
McKelvey, B.C. Hambrey, M.J. Harwood, D.M. Mabin, M.C.G. Webb, P.-N. Whitehead, J.M. |
author_facet |
McKelvey, B.C. Hambrey, M.J. Harwood, D.M. Mabin, M.C.G. Webb, P.-N. Whitehead, J.M. |
author_sort |
McKelvey, B.C. |
title |
The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
title_short |
The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
title_full |
The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
title_fullStr |
The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
title_full_unstemmed |
The Pagodroma Group – a Cenozoic record of the East Antarctic ice sheet in the northern Prince Charles Mountains |
title_sort |
pagodroma group – a cenozoic record of the east antarctic ice sheet in the northern prince charles mountains |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1017/s095410200100061x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410200100061X |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(67.490,67.490,-73.065,-73.065) ENVELOPE(67.900,67.900,-70.867,-70.867) ENVELOPE(68.133,68.133,-70.819,-70.819) ENVELOPE(67.667,67.667,-72.317,-72.317) ENVELOPE(172.783,172.783,-85.483,-85.483) |
geographic |
Antarctic East Antarctic Ice Sheet Amery Amery Ice Shelf Prince Charles Mountains Lambert Glacier Battye Glacier Bardin Bluffs Fisher Massif Mount Johnston |
geographic_facet |
Antarctic East Antarctic Ice Sheet Amery Amery Ice Shelf Prince Charles Mountains Lambert Glacier Battye Glacier Bardin Bluffs Fisher Massif Mount Johnston |
genre |
Amery Ice Shelf Antarc* Antarctic Antarctic Science Battye Glacier Ice Sheet Ice Shelf Lambert Glacier Prince Charles Mountains Tidewater |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Antarctic Science Battye Glacier Ice Sheet Ice Shelf Lambert Glacier Prince Charles Mountains Tidewater |
op_source |
Antarctic Science volume 13, issue 4, page 455-468 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410200100061x |
container_title |
Antarctic Science |
container_volume |
13 |
container_issue |
4 |
container_start_page |
455 |
op_container_end_page |
468 |
_version_ |
1792507367505526784 |