The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen.
Combination of field studies and analytical techniques provides the basis for unravelling the tectonic evolution of the continental crust. Here field studies together with the ID-TIMS method for U/Pb-dating have been applied to a segment of the North Atlantic Caledonides, the NW Spitsbergen Terrane....
Main Author: | |
---|---|
Other Authors: | |
Format: | Master Thesis |
Language: | English |
Published: |
2005
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/12401 http://urn.nb.no/URN:NBN:no-12229 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/12401 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/12401 2023-05-15T15:08:56+02:00 The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. Myhre, Per Inge prof. Arild Andresen, prof. Fernando Corfu 2005 http://hdl.handle.net/10852/12401 http://urn.nb.no/URN:NBN:no-12229 eng eng http://urn.nb.no/URN:NBN:no-12229 Myhre, Per Inge. The tectonomagmatic evolution of Svalbards North-Western Terrane. Masteroppgave, University of Oslo, 2005 http://hdl.handle.net/10852/12401 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Myhre, Per Inge&rft.title=The tectonomagmatic evolution of Svalbards North-Western Terrane.&rft.inst=University of Oslo&rft.date=2005&rft.degree=Masteroppgave URN:NBN:no-12229 40362 060850698 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12401/2/myhre.pdf geokronologi tektonikk petrologi geokjemi terreng U-Pb VDP::450 Master thesis Masteroppgave 2005 ftoslouniv 2020-06-21T08:42:07Z Combination of field studies and analytical techniques provides the basis for unravelling the tectonic evolution of the continental crust. Here field studies together with the ID-TIMS method for U/Pb-dating have been applied to a segment of the North Atlantic Caledonides, the NW Spitsbergen Terrane. The archipelago of Svalbard is situated in the Arctic Ocean and comprises Caledonian and older basement rocks underlying a Devonian-Neogene sedimentary succession. The basement is composed of several terranes separated by N-S-trending faults. Fieldwork and U/Pb dating on zircon, monazite and titanite from orthogneisses and granitoids from the NW Spitsbergen Terrane provides more detailed knowledge on the timing of 2 orogenic events in this region; the Grenvillian and the Caledonian. The Grenvillian event is represented by two samples of orthogneiss yielding crystallization ages of 962 ± 6 and 970 ± 7 Ma. Caledonian rocks dated include two samples of migmatite gneiss from the Kongsfjorden area yielding 425 ± 4 and 423 ± 1 Ma monazite ages, a migmatite leucosome (418,0 ± 0,7 Ma, Krossfjorden) and two granitoid intrusions from the Smeerenburgfjorden area with crystallization ages of 418,4 ± 0,7 and 421,6 ± 1,5 Ma. These data are in good agreement with previous interpretations that the NW Spitsbergen terrane has Laurentian affinities. Master Thesis Arctic Arctic Ocean Kongsfjord* Kongsfjorden Krossfjord* North Atlantic Smeerenburgfjord* Svalbard Spitsbergen Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Arctic Ocean Krossfjorden ENVELOPE(11.742,11.742,79.141,79.141) Smeerenburgfjorden ENVELOPE(11.158,11.158,79.681,79.681) Svalbard |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
geokronologi tektonikk petrologi geokjemi terreng U-Pb VDP::450 |
spellingShingle |
geokronologi tektonikk petrologi geokjemi terreng U-Pb VDP::450 Myhre, Per Inge The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
topic_facet |
geokronologi tektonikk petrologi geokjemi terreng U-Pb VDP::450 |
description |
Combination of field studies and analytical techniques provides the basis for unravelling the tectonic evolution of the continental crust. Here field studies together with the ID-TIMS method for U/Pb-dating have been applied to a segment of the North Atlantic Caledonides, the NW Spitsbergen Terrane. The archipelago of Svalbard is situated in the Arctic Ocean and comprises Caledonian and older basement rocks underlying a Devonian-Neogene sedimentary succession. The basement is composed of several terranes separated by N-S-trending faults. Fieldwork and U/Pb dating on zircon, monazite and titanite from orthogneisses and granitoids from the NW Spitsbergen Terrane provides more detailed knowledge on the timing of 2 orogenic events in this region; the Grenvillian and the Caledonian. The Grenvillian event is represented by two samples of orthogneiss yielding crystallization ages of 962 ± 6 and 970 ± 7 Ma. Caledonian rocks dated include two samples of migmatite gneiss from the Kongsfjorden area yielding 425 ± 4 and 423 ± 1 Ma monazite ages, a migmatite leucosome (418,0 ± 0,7 Ma, Krossfjorden) and two granitoid intrusions from the Smeerenburgfjorden area with crystallization ages of 418,4 ± 0,7 and 421,6 ± 1,5 Ma. These data are in good agreement with previous interpretations that the NW Spitsbergen terrane has Laurentian affinities. |
author2 |
prof. Arild Andresen, prof. Fernando Corfu |
format |
Master Thesis |
author |
Myhre, Per Inge |
author_facet |
Myhre, Per Inge |
author_sort |
Myhre, Per Inge |
title |
The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
title_short |
The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
title_full |
The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
title_fullStr |
The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
title_full_unstemmed |
The tectonomagmatic evolution of Svalbards North-Western Terrane. : U/Pb-ages for Proterozoic crust and Caledonian magmatic evolution in Spitsbergen. |
title_sort |
tectonomagmatic evolution of svalbards north-western terrane. : u/pb-ages for proterozoic crust and caledonian magmatic evolution in spitsbergen. |
publishDate |
2005 |
url |
http://hdl.handle.net/10852/12401 http://urn.nb.no/URN:NBN:no-12229 |
long_lat |
ENVELOPE(11.742,11.742,79.141,79.141) ENVELOPE(11.158,11.158,79.681,79.681) |
geographic |
Arctic Arctic Ocean Krossfjorden Smeerenburgfjorden Svalbard |
geographic_facet |
Arctic Arctic Ocean Krossfjorden Smeerenburgfjorden Svalbard |
genre |
Arctic Arctic Ocean Kongsfjord* Kongsfjorden Krossfjord* North Atlantic Smeerenburgfjord* Svalbard Spitsbergen |
genre_facet |
Arctic Arctic Ocean Kongsfjord* Kongsfjorden Krossfjord* North Atlantic Smeerenburgfjord* Svalbard Spitsbergen |
op_relation |
http://urn.nb.no/URN:NBN:no-12229 Myhre, Per Inge. The tectonomagmatic evolution of Svalbards North-Western Terrane. Masteroppgave, University of Oslo, 2005 http://hdl.handle.net/10852/12401 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Myhre, Per Inge&rft.title=The tectonomagmatic evolution of Svalbards North-Western Terrane.&rft.inst=University of Oslo&rft.date=2005&rft.degree=Masteroppgave URN:NBN:no-12229 40362 060850698 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12401/2/myhre.pdf |
_version_ |
1766340205191626752 |