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
Abstract in UndeterminedThe 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 unrave...
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ftulundlup:oai:lup.lub.lu.se:b6dbb4a5-c895-4aa0-a1d1-a51fab1939cb 2023-05-15T16:27:23+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, Tony Foster, Gavin Scherstén, Anders Whitehouse, Martin Darling, Mike Storey, Craig 2009 https://lup.lub.lu.se/record/1388935 https://doi.org/10.1016/j.chemgeo.2008.06.019 eng eng Elsevier https://lup.lub.lu.se/record/1388935 http://dx.doi.org/10.1016/j.chemgeo.2008.06.019 wos:000265817200005 scopus:63449107491 Chemical Geology; 261(3-4), pp 244-260 (2009) ISSN: 0009-2541 Geology contributiontojournal/article info:eu-repo/semantics/article text 2009 ftulundlup https://doi.org/10.1016/j.chemgeo.2008.06.019 2023-02-01T23:32:35Z Abstract in UndeterminedThe 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 (207)Pb/(206)Pb 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 Lund University Publications (LUP) Greenland Chemical Geology 261 3-4 244 260 |
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Open Polar |
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Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Kemp, Tony Foster, Gavin Scherstén, Anders Whitehouse, Martin Darling, Mike 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 |
Geology |
description |
Abstract in UndeterminedThe 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 (207)Pb/(206)Pb 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, Tony Foster, Gavin Scherstén, Anders Whitehouse, Martin Darling, Mike Storey, Craig |
author_facet |
Kemp, Tony Foster, Gavin Scherstén, Anders Whitehouse, Martin Darling, Mike Storey, Craig |
author_sort |
Kemp, Tony |
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 |
publisher |
Elsevier |
publishDate |
2009 |
url |
https://lup.lub.lu.se/record/1388935 https://doi.org/10.1016/j.chemgeo.2008.06.019 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Chemical Geology; 261(3-4), pp 244-260 (2009) ISSN: 0009-2541 |
op_relation |
https://lup.lub.lu.se/record/1388935 http://dx.doi.org/10.1016/j.chemgeo.2008.06.019 wos:000265817200005 scopus:63449107491 |
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 |
_version_ |
1766016532863778816 |