Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides
U–Pb ion microprobe investigations of zircons from gneisses, granites and migmatites of the pre-Devonian Smerenburgfjorden and Richarddalen Complexes constrain the tectonic evolution and origin of Svalbard's Northwestern Terrane. Field relationships combined with U–Pb age data indicate that a l...
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ftgeosoclonfig:oai:figshare.com:article/3454577 2023-05-15T15:05:01+02:00 Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides C.H. Pettersson A.M. Tebenkov A.N. Larionov A. Andresen V. Pease 2016-06-21T12:13:06Z https://doi.org/10.6084/m9.figshare.3454577.v1 https://figshare.com/articles/Timing_of_migmatization_and_granite_genesis_in_the_Northwestern_Terrane_of_Svalbard_Norway_implications_for_regional_correlations___in_the_Arctic_Caledonides/3454577 unknown doi:10.6084/m9.figshare.3454577.v1 https://figshare.com/articles/Timing_of_migmatization_and_granite_genesis_in_the_Northwestern_Terrane_of_Svalbard_Norway_implications_for_regional_correlations___in_the_Arctic_Caledonides/3454577 CC BY 4.0 CC-BY Geology migmatite East Greenland Svalbard Ma Krummedal supracrustal sequence migmatization granitoid Neoproterozoic metapelitic protolith NE Meso granite genesis zircon Northwestern Terrane Caledonian correlation Dataset 2016 ftgeosoclonfig https://doi.org/10.6084/m9.figshare.3454577.v1 2020-02-21T07:23:24Z U–Pb ion microprobe investigations of zircons from gneisses, granites and migmatites of the pre-Devonian Smerenburgfjorden and Richarddalen Complexes constrain the tectonic evolution and origin of Svalbard's Northwestern Terrane. Field relationships combined with U–Pb age data indicate that a late Meso- to Neoproterozoic metapelitic protolith was intruded by Tonian ( c . 960 Ma) granitoids and suggest that the entire Northwestern Terrane is underlain by early Neoproterozoic granitoids intruding older metasediments. Both rock types were later involved in Caledonian deformation, with subsequent migmatization and granite genesis at c . 435–420 Ma. Ages of inherited zircons in granites and migmatites reflect anatexis of this late Meso- to Neoproterozoic protolith, with zircon xenocrysts ranging in age from c . 1030 to 1820 Ma. Pronounced lithological, geochronological and tectonothermal similarities to NE Svalbard (Nordaustlandet) and the Krummedal supracrustal sequence of East Greenland suggest a strong correlation between Svalbard and East Greenland prior to Caledonian orogenesis. Dataset Arctic East Greenland Greenland Nordaustlandet Svalbard Geological Society of London: Figshare Arctic Greenland Nordaustlandet ENVELOPE(22.400,22.400,79.800,79.800) Norway Richarddalen ENVELOPE(12.333,12.333,79.667,79.667) Svalbard |
institution |
Open Polar |
collection |
Geological Society of London: Figshare |
op_collection_id |
ftgeosoclonfig |
language |
unknown |
topic |
Geology migmatite East Greenland Svalbard Ma Krummedal supracrustal sequence migmatization granitoid Neoproterozoic metapelitic protolith NE Meso granite genesis zircon Northwestern Terrane Caledonian correlation |
spellingShingle |
Geology migmatite East Greenland Svalbard Ma Krummedal supracrustal sequence migmatization granitoid Neoproterozoic metapelitic protolith NE Meso granite genesis zircon Northwestern Terrane Caledonian correlation C.H. Pettersson A.M. Tebenkov A.N. Larionov A. Andresen V. Pease Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
topic_facet |
Geology migmatite East Greenland Svalbard Ma Krummedal supracrustal sequence migmatization granitoid Neoproterozoic metapelitic protolith NE Meso granite genesis zircon Northwestern Terrane Caledonian correlation |
description |
U–Pb ion microprobe investigations of zircons from gneisses, granites and migmatites of the pre-Devonian Smerenburgfjorden and Richarddalen Complexes constrain the tectonic evolution and origin of Svalbard's Northwestern Terrane. Field relationships combined with U–Pb age data indicate that a late Meso- to Neoproterozoic metapelitic protolith was intruded by Tonian ( c . 960 Ma) granitoids and suggest that the entire Northwestern Terrane is underlain by early Neoproterozoic granitoids intruding older metasediments. Both rock types were later involved in Caledonian deformation, with subsequent migmatization and granite genesis at c . 435–420 Ma. Ages of inherited zircons in granites and migmatites reflect anatexis of this late Meso- to Neoproterozoic protolith, with zircon xenocrysts ranging in age from c . 1030 to 1820 Ma. Pronounced lithological, geochronological and tectonothermal similarities to NE Svalbard (Nordaustlandet) and the Krummedal supracrustal sequence of East Greenland suggest a strong correlation between Svalbard and East Greenland prior to Caledonian orogenesis. |
format |
Dataset |
author |
C.H. Pettersson A.M. Tebenkov A.N. Larionov A. Andresen V. Pease |
author_facet |
C.H. Pettersson A.M. Tebenkov A.N. Larionov A. Andresen V. Pease |
author_sort |
C.H. Pettersson |
title |
Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
title_short |
Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
title_full |
Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
title_fullStr |
Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
title_full_unstemmed |
Timing of migmatization and granite genesis in the Northwestern Terrane of Svalbard, Norway: implications for regional correlations in the Arctic Caledonides |
title_sort |
timing of migmatization and granite genesis in the northwestern terrane of svalbard, norway: implications for regional correlations in the arctic caledonides |
publishDate |
2016 |
url |
https://doi.org/10.6084/m9.figshare.3454577.v1 https://figshare.com/articles/Timing_of_migmatization_and_granite_genesis_in_the_Northwestern_Terrane_of_Svalbard_Norway_implications_for_regional_correlations___in_the_Arctic_Caledonides/3454577 |
long_lat |
ENVELOPE(22.400,22.400,79.800,79.800) ENVELOPE(12.333,12.333,79.667,79.667) |
geographic |
Arctic Greenland Nordaustlandet Norway Richarddalen Svalbard |
geographic_facet |
Arctic Greenland Nordaustlandet Norway Richarddalen Svalbard |
genre |
Arctic East Greenland Greenland Nordaustlandet Svalbard |
genre_facet |
Arctic East Greenland Greenland Nordaustlandet Svalbard |
op_relation |
doi:10.6084/m9.figshare.3454577.v1 https://figshare.com/articles/Timing_of_migmatization_and_granite_genesis_in_the_Northwestern_Terrane_of_Svalbard_Norway_implications_for_regional_correlations___in_the_Arctic_Caledonides/3454577 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3454577.v1 |
_version_ |
1766336779883905024 |