Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals
Epidote group minerals, including allanite, clinozoisite and epidote are common in a range of metamorphic, igneous and hydrothermal systems, and are stable across a wide range of pressure–temperature (P–T) conditions. These minerals can incorporate substantial amounts of rare earth elements (REEs) d...
Published in: | Contributions to Mineralogy and Petrology |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/laser-ablation-in-situ-luhf-geochronology-of-epidote-group-minerals(36dc0aae-bfa4-4326-bc01-6998cf36bd91).html https://doi.org/10.1007/s00410-024-02143-y https://curis.ku.dk/ws/files/395387290/Laser_ablation_in_situ_Lu_Hf_geochronology_of_epidote_group_minerals.pdf |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/36dc0aae-bfa4-4326-bc01-6998cf36bd91 |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/36dc0aae-bfa4-4326-bc01-6998cf36bd91 2024-09-09T19:43:29+00:00 Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals Yu, Jie Glorie, Stijn Hand, Martin Simpson, Alexander Gilbert, Sarah Szilas, Kristoffer Roberts, Nick Pawley, Mark Cheng, Yanbo 2024 application/pdf https://curis.ku.dk/portal/da/publications/laser-ablation-in-situ-luhf-geochronology-of-epidote-group-minerals(36dc0aae-bfa4-4326-bc01-6998cf36bd91).html https://doi.org/10.1007/s00410-024-02143-y https://curis.ku.dk/ws/files/395387290/Laser_ablation_in_situ_Lu_Hf_geochronology_of_epidote_group_minerals.pdf eng eng info:eu-repo/semantics/openAccess Yu , J , Glorie , S , Hand , M , Simpson , A , Gilbert , S , Szilas , K , Roberts , N , Pawley , M & Cheng , Y 2024 , ' Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals ' , Contributions to Mineralogy and Petrology , vol. 179 , 62 . https://doi.org/10.1007/s00410-024-02143-y Allanite Clinozoisite Epidote in situ geochronology Lutetium-hafnium Rare earth elements article 2024 ftcopenhagenunip https://doi.org/10.1007/s00410-024-02143-y 2024-08-26T14:29:37Z Epidote group minerals, including allanite, clinozoisite and epidote are common in a range of metamorphic, igneous and hydrothermal systems, and are stable across a wide range of pressure–temperature (P–T) conditions. These minerals can incorporate substantial amounts of rare earth elements (REEs) during their crystallisation, making them potential candidates for Lu–Hf geochronology to provide age constraints on various geological processes. Here we report on a first exploration into the feasibility of in situ Lu–Hf geochronology for epidote group minerals from various geological settings and compare the results with age constraints from other geochronometers. Magmatic allanite samples from pegmatites and monzogranites in the Greenland anorthosite complex, Coompana Province and Qingling Orogen provided dates consistent with magmatic events spanning from c. 2660 to 1171 Ma. In the Qingling pegmatites, a younger phase of hydrothermal allanite was dated at c. 215 Ma, consistent with the timing of regional REE mineralisation. Allanite from the Yambah Shear Zone, Strangways Metamorphic Complex, yielded Lu–Hf age of c. 430 Ma. It predates the garnet and apatite growth at c. 380 Ma, suggesting the Lu–Hf system can be preserved in allanite during prograde amphibolite-facies metamorphism. Additionally, Lu–Hf dates for hydrothermal clinozoisite and epidote are consistent with the timing of hydrothermal alteration and mineralisation in a range of settings, demonstrating the utility of the technique for mineral exploration. Despite the current lack of matrix-matched reference materials, the successful application of laser ablation Lu–Hf geochronology to epidote group minerals offers valuable geochronological insights into various geological processes that can be difficult to access through other geochronometers. Article in Journal/Newspaper Greenland University of Copenhagen: Research Greenland Contributions to Mineralogy and Petrology 179 6 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Allanite Clinozoisite Epidote in situ geochronology Lutetium-hafnium Rare earth elements |
spellingShingle |
Allanite Clinozoisite Epidote in situ geochronology Lutetium-hafnium Rare earth elements Yu, Jie Glorie, Stijn Hand, Martin Simpson, Alexander Gilbert, Sarah Szilas, Kristoffer Roberts, Nick Pawley, Mark Cheng, Yanbo Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
topic_facet |
Allanite Clinozoisite Epidote in situ geochronology Lutetium-hafnium Rare earth elements |
description |
Epidote group minerals, including allanite, clinozoisite and epidote are common in a range of metamorphic, igneous and hydrothermal systems, and are stable across a wide range of pressure–temperature (P–T) conditions. These minerals can incorporate substantial amounts of rare earth elements (REEs) during their crystallisation, making them potential candidates for Lu–Hf geochronology to provide age constraints on various geological processes. Here we report on a first exploration into the feasibility of in situ Lu–Hf geochronology for epidote group minerals from various geological settings and compare the results with age constraints from other geochronometers. Magmatic allanite samples from pegmatites and monzogranites in the Greenland anorthosite complex, Coompana Province and Qingling Orogen provided dates consistent with magmatic events spanning from c. 2660 to 1171 Ma. In the Qingling pegmatites, a younger phase of hydrothermal allanite was dated at c. 215 Ma, consistent with the timing of regional REE mineralisation. Allanite from the Yambah Shear Zone, Strangways Metamorphic Complex, yielded Lu–Hf age of c. 430 Ma. It predates the garnet and apatite growth at c. 380 Ma, suggesting the Lu–Hf system can be preserved in allanite during prograde amphibolite-facies metamorphism. Additionally, Lu–Hf dates for hydrothermal clinozoisite and epidote are consistent with the timing of hydrothermal alteration and mineralisation in a range of settings, demonstrating the utility of the technique for mineral exploration. Despite the current lack of matrix-matched reference materials, the successful application of laser ablation Lu–Hf geochronology to epidote group minerals offers valuable geochronological insights into various geological processes that can be difficult to access through other geochronometers. |
format |
Article in Journal/Newspaper |
author |
Yu, Jie Glorie, Stijn Hand, Martin Simpson, Alexander Gilbert, Sarah Szilas, Kristoffer Roberts, Nick Pawley, Mark Cheng, Yanbo |
author_facet |
Yu, Jie Glorie, Stijn Hand, Martin Simpson, Alexander Gilbert, Sarah Szilas, Kristoffer Roberts, Nick Pawley, Mark Cheng, Yanbo |
author_sort |
Yu, Jie |
title |
Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
title_short |
Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
title_full |
Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
title_fullStr |
Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
title_full_unstemmed |
Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals |
title_sort |
laser ablation (in situ) lu-hf geochronology of epidote group minerals |
publishDate |
2024 |
url |
https://curis.ku.dk/portal/da/publications/laser-ablation-in-situ-luhf-geochronology-of-epidote-group-minerals(36dc0aae-bfa4-4326-bc01-6998cf36bd91).html https://doi.org/10.1007/s00410-024-02143-y https://curis.ku.dk/ws/files/395387290/Laser_ablation_in_situ_Lu_Hf_geochronology_of_epidote_group_minerals.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Yu , J , Glorie , S , Hand , M , Simpson , A , Gilbert , S , Szilas , K , Roberts , N , Pawley , M & Cheng , Y 2024 , ' Laser ablation (in situ) Lu-Hf geochronology of epidote group minerals ' , Contributions to Mineralogy and Petrology , vol. 179 , 62 . https://doi.org/10.1007/s00410-024-02143-y |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00410-024-02143-y |
container_title |
Contributions to Mineralogy and Petrology |
container_volume |
179 |
container_issue |
6 |
_version_ |
1809912933115756544 |