The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate
© 2019 The Author(s). Published by The Geological Society of London. All rights reserved. A tract of amphibolite-facies granitic gneisses and metagabbros in northern Shetland, UK, is here named the Uyea Gneiss Complex. Zircon U–Pb dating indicates emplacement of the igneous protoliths of the complex...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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GEOLOGICAL SOC PUBL HOUSE
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/80305 |
| _version_ | 1848764193621147648 |
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| author | Kinny, Pete Strachan, R.A. Fowler, M. Clark, Chris Davis, S. Jahn, I. Taylor, Richard Holdsworth, R.E. Dempsey, E. |
| author_facet | Kinny, Pete Strachan, R.A. Fowler, M. Clark, Chris Davis, S. Jahn, I. Taylor, Richard Holdsworth, R.E. Dempsey, E. |
| author_sort | Kinny, Pete |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2019 The Author(s). Published by The Geological Society of London. All rights reserved. A tract of amphibolite-facies granitic gneisses and metagabbros in northern Shetland, UK, is here named the Uyea Gneiss Complex. Zircon U–Pb dating indicates emplacement of the igneous protoliths of the complex c. 2746–2726 Ma, at a later time than most of the Archean protoliths of the Lewisian Gneiss Complex of mainland Scotland. Calc-alkaline geochemistry of the Uyea Gneiss Complex indicates arc-affinity and a strong genetic kinship among the mafic and felsic components. Zircon Hf compositions suggest an enriched mantle source and limited interaction with older crust during emplacement. Ductile fabrics developed soon after emplacement, with zircon rims at c. 2710 Ma, but there was little further deformation until Caledonian reworking east of the Uyea Shear Zone. There is no evidence for the Paleoproterozoic reworking that dominates large tracts of the Lewisian Gneiss Complex and of the Nagssugtoqidian Orogen of East Greenland. The more northerly location of the Uyea Gneiss Complex and extensive offshore basement of similar age implies that, prior to the opening of the North Atlantic Ocean, these rocks were contiguous with the Archean Rae Craton. |
| first_indexed | 2025-11-14T11:15:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-80305 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:15:28Z |
| publishDate | 2018 |
| publisher | GEOLOGICAL SOC PUBL HOUSE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-803052020-11-19T07:52:14Z The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate Kinny, Pete Strachan, R.A. Fowler, M. Clark, Chris Davis, S. Jahn, I. Taylor, Richard Holdsworth, R.E. Dempsey, E. Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology SOUTH-EAST GREENLAND SCOTTISH CALEDONIDES IMPLICATIONS U-PB LEWISIAN COMPLEX NAGSSUGTOQIDIAN OROGEN ZIRCON EVOLUTION TERRANE GEOCHRONOLOGY AGES © 2019 The Author(s). Published by The Geological Society of London. All rights reserved. A tract of amphibolite-facies granitic gneisses and metagabbros in northern Shetland, UK, is here named the Uyea Gneiss Complex. Zircon U–Pb dating indicates emplacement of the igneous protoliths of the complex c. 2746–2726 Ma, at a later time than most of the Archean protoliths of the Lewisian Gneiss Complex of mainland Scotland. Calc-alkaline geochemistry of the Uyea Gneiss Complex indicates arc-affinity and a strong genetic kinship among the mafic and felsic components. Zircon Hf compositions suggest an enriched mantle source and limited interaction with older crust during emplacement. Ductile fabrics developed soon after emplacement, with zircon rims at c. 2710 Ma, but there was little further deformation until Caledonian reworking east of the Uyea Shear Zone. There is no evidence for the Paleoproterozoic reworking that dominates large tracts of the Lewisian Gneiss Complex and of the Nagssugtoqidian Orogen of East Greenland. The more northerly location of the Uyea Gneiss Complex and extensive offshore basement of similar age implies that, prior to the opening of the North Atlantic Ocean, these rocks were contiguous with the Archean Rae Craton. 2018 Journal Article http://hdl.handle.net/20.500.11937/80305 10.1144/jgs2019-017 English GEOLOGICAL SOC PUBL HOUSE fulltext |
| spellingShingle | Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology SOUTH-EAST GREENLAND SCOTTISH CALEDONIDES IMPLICATIONS U-PB LEWISIAN COMPLEX NAGSSUGTOQIDIAN OROGEN ZIRCON EVOLUTION TERRANE GEOCHRONOLOGY AGES Kinny, Pete Strachan, R.A. Fowler, M. Clark, Chris Davis, S. Jahn, I. Taylor, Richard Holdsworth, R.E. Dempsey, E. The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title | The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title_full | The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title_fullStr | The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title_full_unstemmed | The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title_short | The neoarchean uyea gneiss complex, shetland: An onshore fragment of the rae craton on the European plate |
| title_sort | neoarchean uyea gneiss complex, shetland: an onshore fragment of the rae craton on the european plate |
| topic | Science & Technology Physical Sciences Geosciences, Multidisciplinary Geology SOUTH-EAST GREENLAND SCOTTISH CALEDONIDES IMPLICATIONS U-PB LEWISIAN COMPLEX NAGSSUGTOQIDIAN OROGEN ZIRCON EVOLUTION TERRANE GEOCHRONOLOGY AGES |
| url | http://hdl.handle.net/20.500.11937/80305 |