Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island
Palynological analyses of the Marambio Group sediments of Humps Island (Santa Marta and López de Bertodano formations) indicates that there is minor displacement across a prominent NW–SE trending normal fault which passes beneath the southern bluff. No major compositional differences were perceived...
Published in: | Antarctic Science |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1992
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102092000476 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102092000476 |
id |
crcambridgeupr:10.1017/s0954102092000476 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102092000476 2024-03-03T08:37:21+00:00 Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island Dolding, Philip J.D. 1992 http://dx.doi.org/10.1017/s0954102092000476 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102092000476 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 4, issue 3, page 311-326 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1992 crcambridgeupr https://doi.org/10.1017/s0954102092000476 2024-02-08T08:22:37Z Palynological analyses of the Marambio Group sediments of Humps Island (Santa Marta and López de Bertodano formations) indicates that there is minor displacement across a prominent NW–SE trending normal fault which passes beneath the southern bluff. No major compositional differences were perceived between the palynomorph assemblages either side of the fault. A late Campanian age is suggested for both sequences, based on comparison with Australasian dinoflagellate cyst zonations. A new species of the dinoflagellate cyst Bourkidinium has been recorded from strata on either side of the fault. A significant number of recycled Permian and Early Cretaceous palynomorphs were recorded. Most are miospores and exhibit significant variation in preservational states, implying derivation from several sources. More thermally mature Permian gymnosperm pollen is most likely derived from the nearby Trinity Peninsula Group, exposed on the Antarctic Peninsula. The source of the relatively well preserved Permian pollen is problematic. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Cambridge University Press Antarctic The Antarctic Antarctic Peninsula Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Trinity Peninsula ENVELOPE(-58.000,-58.000,-63.500,-63.500) Humps ENVELOPE(-57.450,-57.450,-63.983,-63.983) Humps Island ENVELOPE(-57.409,-57.409,-63.988,-63.988) Antarctic Science 4 3 311 326 |
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 Dolding, Philip J.D. Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Palynological analyses of the Marambio Group sediments of Humps Island (Santa Marta and López de Bertodano formations) indicates that there is minor displacement across a prominent NW–SE trending normal fault which passes beneath the southern bluff. No major compositional differences were perceived between the palynomorph assemblages either side of the fault. A late Campanian age is suggested for both sequences, based on comparison with Australasian dinoflagellate cyst zonations. A new species of the dinoflagellate cyst Bourkidinium has been recorded from strata on either side of the fault. A significant number of recycled Permian and Early Cretaceous palynomorphs were recorded. Most are miospores and exhibit significant variation in preservational states, implying derivation from several sources. More thermally mature Permian gymnosperm pollen is most likely derived from the nearby Trinity Peninsula Group, exposed on the Antarctic Peninsula. The source of the relatively well preserved Permian pollen is problematic. |
format |
Article in Journal/Newspaper |
author |
Dolding, Philip J.D. |
author_facet |
Dolding, Philip J.D. |
author_sort |
Dolding, Philip J.D. |
title |
Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
title_short |
Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
title_full |
Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
title_fullStr |
Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
title_full_unstemmed |
Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island |
title_sort |
palynology of the marambio group (upper cretaceous) of northern humps island |
publisher |
Cambridge University Press (CUP) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1017/s0954102092000476 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102092000476 |
long_lat |
ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-58.000,-58.000,-63.500,-63.500) ENVELOPE(-57.450,-57.450,-63.983,-63.983) ENVELOPE(-57.409,-57.409,-63.988,-63.988) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Marambio Trinity Peninsula Humps Humps Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Marambio Trinity Peninsula Humps Humps Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science |
op_source |
Antarctic Science volume 4, issue 3, page 311-326 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102092000476 |
container_title |
Antarctic Science |
container_volume |
4 |
container_issue |
3 |
container_start_page |
311 |
op_container_end_page |
326 |
_version_ |
1792498317451591680 |