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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Cambridge University Press
1994
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Online Access: | http://nora.nerc.ac.uk/id/eprint/516708/ https://doi.org/10.1017/S0954102094000775 |
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ftnerc:oai:nora.nerc.ac.uk:516708 2023-05-15T13:49:34+02:00 Petrography and provenance of the Marambio Group, Vega Island, Antarctica Pirrie, Duncan 1994-12 http://nora.nerc.ac.uk/id/eprint/516708/ https://doi.org/10.1017/S0954102094000775 unknown Cambridge University Press Pirrie, Duncan. 1994 Petrography and provenance of the Marambio Group, Vega Island, Antarctica. Antarctic Science, 6 (4). https://doi.org/10.1017/S0954102094000775 <https://doi.org/10.1017/S0954102094000775> Earth Sciences Publication - Article PeerReviewed 1994 ftnerc https://doi.org/10.1017/S0954102094000775 2023-02-04T19:44:47Z 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 Natural Environment Research Council: NERC Open Research Archive 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 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Pirrie, Duncan Petrography and provenance of the Marambio Group, Vega Island, Antarctica |
topic_facet |
Earth Sciences |
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 |
publishDate |
1994 |
url |
http://nora.nerc.ac.uk/id/eprint/516708/ https://doi.org/10.1017/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_relation |
Pirrie, Duncan. 1994 Petrography and provenance of the Marambio Group, Vega Island, Antarctica. Antarctic Science, 6 (4). https://doi.org/10.1017/S0954102094000775 <https://doi.org/10.1017/S0954102094000775> |
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 |
_version_ |
1766251657087156224 |