Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas
The in situ Lu–Hf isotope analysis of zircon by laser ablation has emerged as a high-calibre tool for tackling magmatic and crustal evolution. The strength of the approach lies with the ability to target specific zircon growth domains identified by imaging, and thus to unravel polyphase crystallisat...
Published in: | Chemical Geology |
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2009
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Online Access: | https://doi.org/10.1016/j.chemgeo.2008.06.019 https://researchportal.port.ac.uk/portal/en/publications/concurrent-pbhf-isotope-analysis-of-zircon-by-laser-ablation-multicollector-icpms-with-implications-for-the-crustal-evolution-of-greenland-and-the-himalayas(10de6e58-3e3e-4957-8b46-d8eef6441540).html |
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ftunivportsmpubl:oai:researchportal.port.ac.uk:publications/10de6e58-3e3e-4957-8b46-d8eef6441540 2023-05-15T16:27:22+02:00 Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas Kemp, A. Foster, G. Schersten, A. Whitehouse, M. Darling, James Storey, Craig 2009-04 https://doi.org/10.1016/j.chemgeo.2008.06.019 https://researchportal.port.ac.uk/portal/en/publications/concurrent-pbhf-isotope-analysis-of-zircon-by-laser-ablation-multicollector-icpms-with-implications-for-the-crustal-evolution-of-greenland-and-the-himalayas(10de6e58-3e3e-4957-8b46-d8eef6441540).html eng eng info:eu-repo/semantics/restrictedAccess Kemp , A , Foster , G , Schersten , A , Whitehouse , M , Darling , J & Storey , C 2009 , ' Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas ' Chemical Geology , vol 261 , no. 3-4 , pp. 244-260 . DOI:10.1016/j.chemgeo.2008.06.019 /dk/atira/pure/core/subjects/earthsci Earth Sciences article 2009 ftunivportsmpubl https://doi.org/10.1016/j.chemgeo.2008.06.019 2017-09-28T19:29:12Z The in situ Lu–Hf isotope analysis of zircon by laser ablation has emerged as a high-calibre tool for tackling magmatic and crustal evolution. The strength of the approach lies with the ability to target specific zircon growth domains identified by imaging, and thus to unravel polyphase crystallisation histories. However, due to the volume of material being sampled during analysis there remains the possibility of ablation-induced mixing between Hf from domains of different age. Inaccurate Hf isotope ratios and spurious geological interpretations could result. One approach to this problem involves dating the same volume of material analysed for Hf isotopes by concurrently measuring 207Pb/206Pb ratios during ablation [Woodhead, J.D., Hergt, J.M., Shelley, M., Eggins, S., Kemp, R. 2004. Zircon Hf-isotope analysis with an excimer laser, depth profiling, ablation of complex geometries, and concomitant age estimation. Chemical Geology 209, 121–135.]. This paper explores the viability of this dual analysis by investigating complex zircons from three different geological contexts, detrital zircons in sedimentary rocks, inherited zircons in granites, and zircons in metamorphosed Eo-Archaean TTG gneisses from Greenland. The implications of the Greenland data for Archaean crustal evolution are discussed in the light of published solution zircon Hf isotope datasets from these gneisses. A case study of detrital zircons from modern river sands in the Himalayas highlights the potential of the technique for providing a rapid, cost-effective picture of crustal evolution that should complement regional bulk rock studies. Article in Journal/Newspaper Greenland University of Portsmouth: Portsmouth Research Portal Greenland Chemical Geology 261 3-4 244 260 |
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University of Portsmouth: Portsmouth Research Portal |
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ftunivportsmpubl |
language |
English |
topic |
/dk/atira/pure/core/subjects/earthsci Earth Sciences |
spellingShingle |
/dk/atira/pure/core/subjects/earthsci Earth Sciences Kemp, A. Foster, G. Schersten, A. Whitehouse, M. Darling, James Storey, Craig Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
topic_facet |
/dk/atira/pure/core/subjects/earthsci Earth Sciences |
description |
The in situ Lu–Hf isotope analysis of zircon by laser ablation has emerged as a high-calibre tool for tackling magmatic and crustal evolution. The strength of the approach lies with the ability to target specific zircon growth domains identified by imaging, and thus to unravel polyphase crystallisation histories. However, due to the volume of material being sampled during analysis there remains the possibility of ablation-induced mixing between Hf from domains of different age. Inaccurate Hf isotope ratios and spurious geological interpretations could result. One approach to this problem involves dating the same volume of material analysed for Hf isotopes by concurrently measuring 207Pb/206Pb ratios during ablation [Woodhead, J.D., Hergt, J.M., Shelley, M., Eggins, S., Kemp, R. 2004. Zircon Hf-isotope analysis with an excimer laser, depth profiling, ablation of complex geometries, and concomitant age estimation. Chemical Geology 209, 121–135.]. This paper explores the viability of this dual analysis by investigating complex zircons from three different geological contexts, detrital zircons in sedimentary rocks, inherited zircons in granites, and zircons in metamorphosed Eo-Archaean TTG gneisses from Greenland. The implications of the Greenland data for Archaean crustal evolution are discussed in the light of published solution zircon Hf isotope datasets from these gneisses. A case study of detrital zircons from modern river sands in the Himalayas highlights the potential of the technique for providing a rapid, cost-effective picture of crustal evolution that should complement regional bulk rock studies. |
format |
Article in Journal/Newspaper |
author |
Kemp, A. Foster, G. Schersten, A. Whitehouse, M. Darling, James Storey, Craig |
author_facet |
Kemp, A. Foster, G. Schersten, A. Whitehouse, M. Darling, James Storey, Craig |
author_sort |
Kemp, A. |
title |
Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
title_short |
Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
title_full |
Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
title_fullStr |
Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
title_full_unstemmed |
Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas |
title_sort |
concurrent pb-hf isotope analysis of zircon by laser ablation multi-collector icp-ms, with implications for the crustal evolution of greenland and the himalayas |
publishDate |
2009 |
url |
https://doi.org/10.1016/j.chemgeo.2008.06.019 https://researchportal.port.ac.uk/portal/en/publications/concurrent-pbhf-isotope-analysis-of-zircon-by-laser-ablation-multicollector-icpms-with-implications-for-the-crustal-evolution-of-greenland-and-the-himalayas(10de6e58-3e3e-4957-8b46-d8eef6441540).html |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Kemp , A , Foster , G , Schersten , A , Whitehouse , M , Darling , J & Storey , C 2009 , ' Concurrent Pb-Hf isotope analysis of zircon by laser ablation multi-collector ICP-MS, with implications for the crustal evolution of Greenland and the Himalayas ' Chemical Geology , vol 261 , no. 3-4 , pp. 244-260 . DOI:10.1016/j.chemgeo.2008.06.019 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.chemgeo.2008.06.019 |
container_title |
Chemical Geology |
container_volume |
261 |
container_issue |
3-4 |
container_start_page |
244 |
op_container_end_page |
260 |
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1766016524964855808 |