Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach
New apatite fission-track (AFT) ages from Heimefrontfjella and Mannefallknausane indicate that the Mesoproterozoic basement and Permian sedimentary cover rocks were heated to c. 100°C during the Mesozoic. Heating was due to the burial by up to 2000 m of Jurassic lavas at c. 180 Ma, when the area was...
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Online Access: | http://dx.doi.org/10.1017/s0954102099000589 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102099000589 |
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crcambridgeupr:10.1017/s0954102099000589 2024-03-03T08:38:15+00:00 Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach Jacobs, Joachim Lisker, Frank 1999 http://dx.doi.org/10.1017/s0954102099000589 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102099000589 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 11, issue 4, page 451-460 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1999 crcambridgeupr https://doi.org/10.1017/s0954102099000589 2024-02-08T08:28:24Z New apatite fission-track (AFT) ages from Heimefrontfjella and Mannefallknausane indicate that the Mesoproterozoic basement and Permian sedimentary cover rocks were heated to c. 100°C during the Mesozoic. Heating was due to the burial by up to 2000 m of Jurassic lavas at c. 180 Ma, when the area was affected by the Bouvet/Karoo hot spot. Near the developing coastline, the lava pile was quickly eroded and in part deposited on the continental shelf as pebbly and coarse-grained volcaniclastic sandstones. The AFT data indicate that farther inland the lava pile was not eroded until c. 100 Ma, and the Palaeozoic unconformity between the Mesoproterozoic basement and Permo–Carboniferous sedimentary rocks as a reference plane remained at temperatures of c. 80°C. Formation of an up to 800 m b.s.l. deep graben in from Heimefrontfjella as well as flexural uplift and rapid denudational cooling of the not extended crust from Heimefrontfjella southwards occurred at c. 100 Ma. It is speculated that a period of major plate reorganisation and new rifting at c. 100 Ma is responsible for affecting a much wider continental margin as far inland as Heimefrontfjella and producing a total relief in excess of 3500 m. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica Cambridge University Press East Antarctica Dronning Maud Land Bouvet ENVELOPE(3.358,3.358,-54.422,-54.422) Heimefrontfjella ENVELOPE(-11.000,-11.000,-74.667,-74.667) Mannefallknausane ENVELOPE(-14.500,-14.500,-74.583,-74.583) Antarctic Science 11 4 451 460 |
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 Jacobs, Joachim Lisker, Frank Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
New apatite fission-track (AFT) ages from Heimefrontfjella and Mannefallknausane indicate that the Mesoproterozoic basement and Permian sedimentary cover rocks were heated to c. 100°C during the Mesozoic. Heating was due to the burial by up to 2000 m of Jurassic lavas at c. 180 Ma, when the area was affected by the Bouvet/Karoo hot spot. Near the developing coastline, the lava pile was quickly eroded and in part deposited on the continental shelf as pebbly and coarse-grained volcaniclastic sandstones. The AFT data indicate that farther inland the lava pile was not eroded until c. 100 Ma, and the Palaeozoic unconformity between the Mesoproterozoic basement and Permo–Carboniferous sedimentary rocks as a reference plane remained at temperatures of c. 80°C. Formation of an up to 800 m b.s.l. deep graben in from Heimefrontfjella as well as flexural uplift and rapid denudational cooling of the not extended crust from Heimefrontfjella southwards occurred at c. 100 Ma. It is speculated that a period of major plate reorganisation and new rifting at c. 100 Ma is responsible for affecting a much wider continental margin as far inland as Heimefrontfjella and producing a total relief in excess of 3500 m. |
format |
Article in Journal/Newspaper |
author |
Jacobs, Joachim Lisker, Frank |
author_facet |
Jacobs, Joachim Lisker, Frank |
author_sort |
Jacobs, Joachim |
title |
Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
title_short |
Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
title_full |
Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
title_fullStr |
Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
title_full_unstemmed |
Post Permian tectono-thermal evolution of western Dronning Maud Land, East Antarctica: an apatite fission-track approach |
title_sort |
post permian tectono-thermal evolution of western dronning maud land, east antarctica: an apatite fission-track approach |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1017/s0954102099000589 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102099000589 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) ENVELOPE(-11.000,-11.000,-74.667,-74.667) ENVELOPE(-14.500,-14.500,-74.583,-74.583) |
geographic |
East Antarctica Dronning Maud Land Bouvet Heimefrontfjella Mannefallknausane |
geographic_facet |
East Antarctica Dronning Maud Land Bouvet Heimefrontfjella Mannefallknausane |
genre |
Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica Dronning Maud Land East Antarctica |
op_source |
Antarctic Science volume 11, issue 4, page 451-460 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102099000589 |
container_title |
Antarctic Science |
container_volume |
11 |
container_issue |
4 |
container_start_page |
451 |
op_container_end_page |
460 |
_version_ |
1792505843013386240 |