Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration
International audience Here, we evaluate the extent of aqueous alteration among five pristine specimens of the ungrouped Tagish Lake carbonaceous chondrite (TL5b, TL11h, TL11i, TL4, and TL10a) using thermogravimetric analysis (TGA) and infrared (IR) transmission spectroscopy. Both TGA and IR spectro...
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ftunivsavoie:oai:HAL:insu-03635483v1 2024-04-28T08:40:11+00:00 Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration Gilmour, Cosette M. Herd, Christopher D. K. Beck, Pierre Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) 2019 https://insu.hal.science/insu-03635483 https://doi.org/10.1111/maps.13362 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.13362 insu-03635483 https://insu.hal.science/insu-03635483 BIBCODE: 2019M&PS.54.1951G doi:10.1111/maps.13362 Meteoritics & Planetary Science https://insu.hal.science/insu-03635483 Meteoritics & Planetary Science, 2019, 54, pp.1951-1972. ⟨10.1111/maps.13362⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2019 ftunivsavoie https://doi.org/10.1111/maps.13362 2024-04-11T00:35:15Z International audience Here, we evaluate the extent of aqueous alteration among five pristine specimens of the ungrouped Tagish Lake carbonaceous chondrite (TL5b, TL11h, TL11i, TL4, and TL10a) using thermogravimetric analysis (TGA) and infrared (IR) transmission spectroscopy. Both TGA and IR spectroscopy have proven to be reliable methods for determining the extent of aqueous alteration among different carbonaceous chondrites, in particular the CM chondrites (e.g., Garenne et al. 2014), with which Tagish Lake shares some affinities. Using these two methods, our goal is to incorporate TL4 and TL10a into the known alteration sequence of TL5b < TL11h < TL11i (Herd et al. 2011; Blinova et al. 2014a). This study highlights the compositional variability of the Tagish Lake specimens, which we ascribe to its brecciated nature. Our TGA and IR spectroscopy results are congruent with the reported alteration sequence, allowing us to introduce the TL4 and TL10a specimens in the following order: TL4 < TL5b ≤ TL10a < TL 11h < TL11i. Notably, these two specimens appear to be similar to the least altered lithologies previously reported, and the alteration of Tagish Lake is similar to that experienced by lesser altered members of the CM chondrites (>CM1.6). Based on these findings, Tagish Lake could be considered a 1.6-2.0 ungrouped carbonaceous chondrite. Visible and near-IR reflectance measurements of Tagish Lake were also acquired in this study to revisit the Tagish Lake parent body connection. While other studies have paired Tagish Lake with D- and T-type asteroid parent bodies, the reflectance spectra acquired in this study are variable among the different Tagish Lake specimens in relation to their alteration sequences; results match with spectra characteristic of C-, X-, Xc-, and D-type asteroids. The heterogeneity of Tagish Lake coupled with its low albedo makes the parent body connection a challenge. Article in Journal/Newspaper Tagish Université Savoie Mont Blanc: HAL Meteoritics & Planetary Science 54 9 1951 1972 |
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Université Savoie Mont Blanc: HAL |
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ftunivsavoie |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Gilmour, Cosette M. Herd, Christopher D. K. Beck, Pierre Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Here, we evaluate the extent of aqueous alteration among five pristine specimens of the ungrouped Tagish Lake carbonaceous chondrite (TL5b, TL11h, TL11i, TL4, and TL10a) using thermogravimetric analysis (TGA) and infrared (IR) transmission spectroscopy. Both TGA and IR spectroscopy have proven to be reliable methods for determining the extent of aqueous alteration among different carbonaceous chondrites, in particular the CM chondrites (e.g., Garenne et al. 2014), with which Tagish Lake shares some affinities. Using these two methods, our goal is to incorporate TL4 and TL10a into the known alteration sequence of TL5b < TL11h < TL11i (Herd et al. 2011; Blinova et al. 2014a). This study highlights the compositional variability of the Tagish Lake specimens, which we ascribe to its brecciated nature. Our TGA and IR spectroscopy results are congruent with the reported alteration sequence, allowing us to introduce the TL4 and TL10a specimens in the following order: TL4 < TL5b ≤ TL10a < TL 11h < TL11i. Notably, these two specimens appear to be similar to the least altered lithologies previously reported, and the alteration of Tagish Lake is similar to that experienced by lesser altered members of the CM chondrites (>CM1.6). Based on these findings, Tagish Lake could be considered a 1.6-2.0 ungrouped carbonaceous chondrite. Visible and near-IR reflectance measurements of Tagish Lake were also acquired in this study to revisit the Tagish Lake parent body connection. While other studies have paired Tagish Lake with D- and T-type asteroid parent bodies, the reflectance spectra acquired in this study are variable among the different Tagish Lake specimens in relation to their alteration sequences; results match with spectra characteristic of C-, X-, Xc-, and D-type asteroids. The heterogeneity of Tagish Lake coupled with its low albedo makes the parent body connection a challenge. |
author2 |
Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) |
format |
Article in Journal/Newspaper |
author |
Gilmour, Cosette M. Herd, Christopher D. K. Beck, Pierre |
author_facet |
Gilmour, Cosette M. Herd, Christopher D. K. Beck, Pierre |
author_sort |
Gilmour, Cosette M. |
title |
Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
title_short |
Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
title_full |
Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
title_fullStr |
Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
title_full_unstemmed |
Water abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration |
title_sort |
water abundance in the tagish lake meteorite from tga and ir spectroscopy: evaluation of aqueous alteration |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://insu.hal.science/insu-03635483 https://doi.org/10.1111/maps.13362 |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
Meteoritics & Planetary Science https://insu.hal.science/insu-03635483 Meteoritics & Planetary Science, 2019, 54, pp.1951-1972. ⟨10.1111/maps.13362⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.13362 insu-03635483 https://insu.hal.science/insu-03635483 BIBCODE: 2019M&PS.54.1951G doi:10.1111/maps.13362 |
op_doi |
https://doi.org/10.1111/maps.13362 |
container_title |
Meteoritics & Planetary Science |
container_volume |
54 |
container_issue |
9 |
container_start_page |
1951 |
op_container_end_page |
1972 |
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1797570911872745472 |