Petrography and provenance of the Marambio Group, Vega Island, Antarctica
Late Cretaceous sedimentary rocks assigned to the Santa Marta (Herbert Sound Member) and López de Bertodano (Cape Lamb and Sandwich Bluff members) formations of the Marambio Group, crop out on Cape Lamb, Vega Island. Although previous studies have recognized that these sedimentary rocks were derived...
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1994
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Online Access: | http://dx.doi.org/10.1017/s0954102094000775 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000775 |
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crcambridgeupr:10.1017/s0954102094000775 2024-03-03T08:39:18+00:00 Petrography and provenance of the Marambio Group, Vega Island, Antarctica Pirrie, Duncan 1994 http://dx.doi.org/10.1017/s0954102094000775 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000775 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 6, issue 4, page 517-527 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1994 crcambridgeupr https://doi.org/10.1017/s0954102094000775 2024-02-08T08:48:29Z Late Cretaceous sedimentary rocks assigned to the Santa Marta (Herbert Sound Member) and López de Bertodano (Cape Lamb and Sandwich Bluff members) formations of the Marambio Group, crop out on Cape Lamb, Vega Island. Although previous studies have recognized that these sedimentary rocks were derived from the northern Antarctic Peninsula region, the work presented here allows the provenance and palaeogeographical evolution of the region to be described in detail. On the basis of both sandstone petrography and clay mineralogy, the Herbert Sound and Cape Lamb members reflect sediment input from a low relief source area, with sand grade sediment sourced from low grade metasediments, and clay grade sediment ultimately derived from the weathering of an andesitic source area. In contrast, the Sandwich Bluff Member reflects a switch to a predominantly andesitic volcaniclastic source. However, this sediment was largely derived from older volcanic suites due to renewed source area uplift, with only a minor component from coeval volcanism. Regional uplift of both the arc terrane and the western margin of the James Ross Basin was likely during the Maastrichtian. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Vega Island Cambridge University Press Antarctic Antarctic Peninsula Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) Cape Lamb ENVELOPE(-57.621,-57.621,-63.909,-63.909) Sandwich Bluff ENVELOPE(-57.569,-57.569,-63.832,-63.832) Herbert Sound ENVELOPE(-57.647,-57.647,-63.922,-63.922) Antarctic Science 6 4 517 527 |
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 Pirrie, Duncan Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Late Cretaceous sedimentary rocks assigned to the Santa Marta (Herbert Sound Member) and López de Bertodano (Cape Lamb and Sandwich Bluff members) formations of the Marambio Group, crop out on Cape Lamb, Vega Island. Although previous studies have recognized that these sedimentary rocks were derived from the northern Antarctic Peninsula region, the work presented here allows the provenance and palaeogeographical evolution of the region to be described in detail. On the basis of both sandstone petrography and clay mineralogy, the Herbert Sound and Cape Lamb members reflect sediment input from a low relief source area, with sand grade sediment sourced from low grade metasediments, and clay grade sediment ultimately derived from the weathering of an andesitic source area. In contrast, the Sandwich Bluff Member reflects a switch to a predominantly andesitic volcaniclastic source. However, this sediment was largely derived from older volcanic suites due to renewed source area uplift, with only a minor component from coeval volcanism. Regional uplift of both the arc terrane and the western margin of the James Ross Basin was likely during the Maastrichtian. |
format |
Article in Journal/Newspaper |
author |
Pirrie, Duncan |
author_facet |
Pirrie, Duncan |
author_sort |
Pirrie, Duncan |
title |
Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
title_short |
Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
title_full |
Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
title_fullStr |
Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
title_full_unstemmed |
Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
title_sort |
petrography and provenance of the marambio group, vega island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1994 |
url |
http://dx.doi.org/10.1017/s0954102094000775 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102094000775 |
long_lat |
ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-57.500,-57.500,-63.833,-63.833) ENVELOPE(-57.621,-57.621,-63.909,-63.909) ENVELOPE(-57.569,-57.569,-63.832,-63.832) ENVELOPE(-57.647,-57.647,-63.922,-63.922) |
geographic |
Antarctic Antarctic Peninsula Marambio Vega Island Cape Lamb Sandwich Bluff Herbert Sound |
geographic_facet |
Antarctic Antarctic Peninsula Marambio Vega Island Cape Lamb Sandwich Bluff Herbert Sound |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Vega Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Vega Island |
op_source |
Antarctic Science volume 6, issue 4, page 517-527 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102094000775 |
container_title |
Antarctic Science |
container_volume |
6 |
container_issue |
4 |
container_start_page |
517 |
op_container_end_page |
527 |
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1792494768294461440 |