The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations
The Byers Group, exposed in the western South Shetland Islands, is a thick (at least 2.7 km) succession recording Late Jurassic–Early Cretaceous sedimentation and volcanism on the Pacific flank of the Antarctic Peninsula magnetic arc. At least 1.3 km of marine clastic rocks are overlain by 1.4 km of...
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1998
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ftnerc:oai:nora.nerc.ac.uk:504048 2023-05-15T13:48:08+02:00 The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations Hathway, B. Lomas, S.A. 1998 http://nora.nerc.ac.uk/id/eprint/504048/ https://doi.org/10.1006/cres.1997.0095 unknown Elsevier Hathway, B.; Lomas, S.A. 1998 The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations. Cretaceous Research, 19 (1). 43-67. https://doi.org/10.1006/cres.1997.0095 <https://doi.org/10.1006/cres.1997.0095> Publication - Article PeerReviewed 1998 ftnerc https://doi.org/10.1006/cres.1997.0095 2023-02-04T19:38:10Z The Byers Group, exposed in the western South Shetland Islands, is a thick (at least 2.7 km) succession recording Late Jurassic–Early Cretaceous sedimentation and volcanism on the Pacific flank of the Antarctic Peninsula magnetic arc. At least 1.3 km of marine clastic rocks are overlain by 1.4 km of non-marine strata. Penecontemporaneous, mainly intrusive, igneous rocks are present in much of the succession. At the base of the Byers Group, radiolarian-rich, hemipelagic mudstones of the Kimmeridgian–Tithonian Anchorage Formation are succeeded by terrigenous, slope-apron mudstones and sandstones of the Berriasian President Beaches Formation. These deep-marine strata are overlain by shallower-marine conglomerates and mudstones of the Berriasian–Valanginian Chester Cone Formation. The upper part of the marine succession also includes the volcanic breccias of the Start Hill Formation, interpreted as part of a debris-apron flanking a substantial volcanic edifice. Finally, following a Valanginian–Aptian erosional hiatus, non-marine volcaniclastic rocks of the Cerro Negro Formation were deposited in early Aptian times. Comparison with time-equivalent successions elsewhere in the Antarctic Peninsula region suggests that within the overall regressive trend, the Byers Group records regionally significant pulses or arc uplift in Tithonian–earliest Berriasian, latest Berriasian, and late Valanginian–Earliest Aptian times. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula South Shetland Islands Anchorage Pacific Byers ENVELOPE(-60.283,-60.283,-63.900,-63.900) Cerro Negro ENVELOPE(-61.002,-61.002,-62.655,-62.655) Chester Cone ENVELOPE(-61.085,-61.085,-62.636,-62.636) President Beaches ENVELOPE(-61.117,-61.117,-62.625,-62.625) Start Hill ENVELOPE(-61.176,-61.176,-62.597,-62.597) Cretaceous Research 19 1 43 67 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
The Byers Group, exposed in the western South Shetland Islands, is a thick (at least 2.7 km) succession recording Late Jurassic–Early Cretaceous sedimentation and volcanism on the Pacific flank of the Antarctic Peninsula magnetic arc. At least 1.3 km of marine clastic rocks are overlain by 1.4 km of non-marine strata. Penecontemporaneous, mainly intrusive, igneous rocks are present in much of the succession. At the base of the Byers Group, radiolarian-rich, hemipelagic mudstones of the Kimmeridgian–Tithonian Anchorage Formation are succeeded by terrigenous, slope-apron mudstones and sandstones of the Berriasian President Beaches Formation. These deep-marine strata are overlain by shallower-marine conglomerates and mudstones of the Berriasian–Valanginian Chester Cone Formation. The upper part of the marine succession also includes the volcanic breccias of the Start Hill Formation, interpreted as part of a debris-apron flanking a substantial volcanic edifice. Finally, following a Valanginian–Aptian erosional hiatus, non-marine volcaniclastic rocks of the Cerro Negro Formation were deposited in early Aptian times. Comparison with time-equivalent successions elsewhere in the Antarctic Peninsula region suggests that within the overall regressive trend, the Byers Group records regionally significant pulses or arc uplift in Tithonian–earliest Berriasian, latest Berriasian, and late Valanginian–Earliest Aptian times. |
format |
Article in Journal/Newspaper |
author |
Hathway, B. Lomas, S.A. |
spellingShingle |
Hathway, B. Lomas, S.A. The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
author_facet |
Hathway, B. Lomas, S.A. |
author_sort |
Hathway, B. |
title |
The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
title_short |
The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
title_full |
The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
title_fullStr |
The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
title_full_unstemmed |
The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations |
title_sort |
jurassic–lower cretaceous byers group, south shetland islands, antarctica: revised stratigraphy and regional correlations |
publisher |
Elsevier |
publishDate |
1998 |
url |
http://nora.nerc.ac.uk/id/eprint/504048/ https://doi.org/10.1006/cres.1997.0095 |
long_lat |
ENVELOPE(-60.283,-60.283,-63.900,-63.900) ENVELOPE(-61.002,-61.002,-62.655,-62.655) ENVELOPE(-61.085,-61.085,-62.636,-62.636) ENVELOPE(-61.117,-61.117,-62.625,-62.625) ENVELOPE(-61.176,-61.176,-62.597,-62.597) |
geographic |
Antarctic The Antarctic Antarctic Peninsula South Shetland Islands Anchorage Pacific Byers Cerro Negro Chester Cone President Beaches Start Hill |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula South Shetland Islands Anchorage Pacific Byers Cerro Negro Chester Cone President Beaches Start Hill |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
op_relation |
Hathway, B.; Lomas, S.A. 1998 The Jurassic–Lower Cretaceous Byers Group, South Shetland Islands, Antarctica: revised stratigraphy and regional correlations. Cretaceous Research, 19 (1). 43-67. https://doi.org/10.1006/cres.1997.0095 <https://doi.org/10.1006/cres.1997.0095> |
op_doi |
https://doi.org/10.1006/cres.1997.0095 |
container_title |
Cretaceous Research |
container_volume |
19 |
container_issue |
1 |
container_start_page |
43 |
op_container_end_page |
67 |
_version_ |
1766248718441381888 |