The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating
The rare occurrence of Precambrian eclogite has been used to argue when plate tectonics initiated. Wellpreserved kyanite-bearing eclogites were collected in the Kuru-Vaara quarry, northern Belomorian Province, Fennoscandian Shield. Textural observations and phase equilibria modeling were applied to...
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PRECAMBRIAN RESEARCH
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Online Access: | https://hdl.handle.net/20.500.11897/475503 https://doi.org/10.1016/j.precamres.2016.11.011 |
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ftpekinguniv:oai:localhost:20.500.11897/475503 2023-05-15T16:13:10+02:00 The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating Liu, Fenglin Zhang, Lifei Li, Xiaoli Slabunov, Alexander I. Wei, Chunjing Bader, Thomas Zhang, LF (reprint author), Peking Univ, Sch Earth & Space Sci, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. Peking Univ, Sch Earth & Space Sci, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. Russian Acad Sci, Inst Geol, Karelian Sci Ctr, Pushkinskaya Ul 11, Petrozavodsk 185910, Karelia, Russia. 2017 https://hdl.handle.net/20.500.11897/475503 https://doi.org/10.1016/j.precamres.2016.11.011 en eng PRECAMBRIAN RESEARCH PRECAMBRIAN RESEARCH.2017,289,31-47. 1910038 0301-9268 http://hdl.handle.net/20.500.11897/475503 1872-7433 doi:10.1016/j.precamres.2016.11.011 WOS:000393251400003 SCI Paleoproterozoic eclogite P-T path Zircon dating Northern Belomorian Province Kuru-Vaara LAPLAND GRANULITE BELT CALCULATED PHASE-EQUILIBRIA MOBILE BELT BALTIC SHIELD U-PB KOLA-PENINSULA SVECOFENNIAN OROGEN ARCHEAN ECLOGITES UHP ECLOGITES GRIDINO AREA Journal 2017 ftpekinguniv https://doi.org/20.500.11897/475503 https://doi.org/10.1016/j.precamres.2016.11.011 2021-08-01T11:14:34Z The rare occurrence of Precambrian eclogite has been used to argue when plate tectonics initiated. Wellpreserved kyanite-bearing eclogites were collected in the Kuru-Vaara quarry, northern Belomorian Province, Fennoscandian Shield. Textural observations and phase equilibria modeling were applied to constrain their P-T evolution. The eclogite is characterized by the peak pressure assemblage garnet + omphacite + kyanite + amphibole + quartz. The garnet has inclusions of zoisite, omphacite and kyanite. This omphacite with high jadeite (up to 33 mol%) and 5% Ca-Eskola content bears oriented rods of quartz, amphibole, and rutile. Omphacite was replaced by diopside + plagioclase +/- orthopyroxene symplectites and garnet surrounded by plagioclase coronas. Kyanite was mantled by the assemblage sapphirine + spinel + plagioclase +/- scapolite. The symplectites of diopside + plagioclase +/- orthopyroxene are further replaced by amphibole. P-T estimates of peak eclogite fades conditions are c. 18-20 kbar and 720-820 degrees C. The granulite facies assemblages formed at c. 11-13 kbar and 870-915 degrees C. Zircon U-Pb dating reveals the protolith ages of 2802-2929 Ma for the eclogites. The c. 1896 Ma zircon ages correspond to the time of prograde metamorphism in eclogite fades. The age of 1885 +/- 7 Ma for a corundum-bearing mica pegmatite vein that intruded into the eclogites reflects the infiltration of fluid at amphibolite facies conditions. Thus, the Kuru-Vaara eclogite was metamorphosed during the Paleoproterozoic, not the Archean. The P-T path of Kuru-Vaara eclogites was characterized by eclogite fades metamorphism overprinted by granulite fades and retrograde amphibolite fades metamorphism within c. 10 Ma. This process reflects the fast exhumation of the eclogites. The increase in temperature from eclogite to granulite facies in the HT-UHT domain suggests a hot Precambrian tectonic environment. (C) 2016 Elsevier B.V. All rights reserved. National Natural Science Foundation of China [41121062, 41311120071] SCI(E) ARTICLE 31-47 289 Journal/Newspaper Fennoscandian kola peninsula Lapland Peking University Institutional Repository (PKU IR) Gridino ENVELOPE(34.675,34.675,65.923,65.923) Kola Peninsula Vaara ENVELOPE(24.886,24.886,67.360,67.360) Precambrian Research 289 31 47 |
institution |
Open Polar |
collection |
Peking University Institutional Repository (PKU IR) |
op_collection_id |
ftpekinguniv |
language |
English |
topic |
Paleoproterozoic eclogite P-T path Zircon dating Northern Belomorian Province Kuru-Vaara LAPLAND GRANULITE BELT CALCULATED PHASE-EQUILIBRIA MOBILE BELT BALTIC SHIELD U-PB KOLA-PENINSULA SVECOFENNIAN OROGEN ARCHEAN ECLOGITES UHP ECLOGITES GRIDINO AREA |
spellingShingle |
Paleoproterozoic eclogite P-T path Zircon dating Northern Belomorian Province Kuru-Vaara LAPLAND GRANULITE BELT CALCULATED PHASE-EQUILIBRIA MOBILE BELT BALTIC SHIELD U-PB KOLA-PENINSULA SVECOFENNIAN OROGEN ARCHEAN ECLOGITES UHP ECLOGITES GRIDINO AREA Liu, Fenglin Zhang, Lifei Li, Xiaoli Slabunov, Alexander I. Wei, Chunjing Bader, Thomas The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
topic_facet |
Paleoproterozoic eclogite P-T path Zircon dating Northern Belomorian Province Kuru-Vaara LAPLAND GRANULITE BELT CALCULATED PHASE-EQUILIBRIA MOBILE BELT BALTIC SHIELD U-PB KOLA-PENINSULA SVECOFENNIAN OROGEN ARCHEAN ECLOGITES UHP ECLOGITES GRIDINO AREA |
description |
The rare occurrence of Precambrian eclogite has been used to argue when plate tectonics initiated. Wellpreserved kyanite-bearing eclogites were collected in the Kuru-Vaara quarry, northern Belomorian Province, Fennoscandian Shield. Textural observations and phase equilibria modeling were applied to constrain their P-T evolution. The eclogite is characterized by the peak pressure assemblage garnet + omphacite + kyanite + amphibole + quartz. The garnet has inclusions of zoisite, omphacite and kyanite. This omphacite with high jadeite (up to 33 mol%) and 5% Ca-Eskola content bears oriented rods of quartz, amphibole, and rutile. Omphacite was replaced by diopside + plagioclase +/- orthopyroxene symplectites and garnet surrounded by plagioclase coronas. Kyanite was mantled by the assemblage sapphirine + spinel + plagioclase +/- scapolite. The symplectites of diopside + plagioclase +/- orthopyroxene are further replaced by amphibole. P-T estimates of peak eclogite fades conditions are c. 18-20 kbar and 720-820 degrees C. The granulite facies assemblages formed at c. 11-13 kbar and 870-915 degrees C. Zircon U-Pb dating reveals the protolith ages of 2802-2929 Ma for the eclogites. The c. 1896 Ma zircon ages correspond to the time of prograde metamorphism in eclogite fades. The age of 1885 +/- 7 Ma for a corundum-bearing mica pegmatite vein that intruded into the eclogites reflects the infiltration of fluid at amphibolite facies conditions. Thus, the Kuru-Vaara eclogite was metamorphosed during the Paleoproterozoic, not the Archean. The P-T path of Kuru-Vaara eclogites was characterized by eclogite fades metamorphism overprinted by granulite fades and retrograde amphibolite fades metamorphism within c. 10 Ma. This process reflects the fast exhumation of the eclogites. The increase in temperature from eclogite to granulite facies in the HT-UHT domain suggests a hot Precambrian tectonic environment. (C) 2016 Elsevier B.V. All rights reserved. National Natural Science Foundation of China [41121062, 41311120071] SCI(E) ARTICLE 31-47 289 |
author2 |
Zhang, LF (reprint author), Peking Univ, Sch Earth & Space Sci, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. Peking Univ, Sch Earth & Space Sci, MOE Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China. Russian Acad Sci, Inst Geol, Karelian Sci Ctr, Pushkinskaya Ul 11, Petrozavodsk 185910, Karelia, Russia. |
format |
Journal/Newspaper |
author |
Liu, Fenglin Zhang, Lifei Li, Xiaoli Slabunov, Alexander I. Wei, Chunjing Bader, Thomas |
author_facet |
Liu, Fenglin Zhang, Lifei Li, Xiaoli Slabunov, Alexander I. Wei, Chunjing Bader, Thomas |
author_sort |
Liu, Fenglin |
title |
The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
title_short |
The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
title_full |
The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
title_fullStr |
The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
title_full_unstemmed |
The metamorphic evolution of Paleoproterozoic eclogites in Kuru-Vaara, northern Belomorian Province, Russia: Constraints from P-T pseudosections and zircon dating |
title_sort |
metamorphic evolution of paleoproterozoic eclogites in kuru-vaara, northern belomorian province, russia: constraints from p-t pseudosections and zircon dating |
publisher |
PRECAMBRIAN RESEARCH |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.11897/475503 https://doi.org/10.1016/j.precamres.2016.11.011 |
long_lat |
ENVELOPE(34.675,34.675,65.923,65.923) ENVELOPE(24.886,24.886,67.360,67.360) |
geographic |
Gridino Kola Peninsula Vaara |
geographic_facet |
Gridino Kola Peninsula Vaara |
genre |
Fennoscandian kola peninsula Lapland |
genre_facet |
Fennoscandian kola peninsula Lapland |
op_source |
SCI |
op_relation |
PRECAMBRIAN RESEARCH.2017,289,31-47. 1910038 0301-9268 http://hdl.handle.net/20.500.11897/475503 1872-7433 doi:10.1016/j.precamres.2016.11.011 WOS:000393251400003 |
op_doi |
https://doi.org/20.500.11897/475503 https://doi.org/10.1016/j.precamres.2016.11.011 |
container_title |
Precambrian Research |
container_volume |
289 |
container_start_page |
31 |
op_container_end_page |
47 |
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1765998785134067712 |