The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies
On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and the UK. One day later a small meteorite stone was found by accident in Flensburg. The presence of short-lived cosmogenic radionuclides with half-lives as shor...
Published in: | Geochimica et Cosmochimica Acta |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Pergamon-elsevier Science Ltd
2021
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Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00686/79845/82672.pdf https://archimer.ifremer.fr/doc/00686/79845/82673.pdf https://doi.org/10.1016/j.gca.2020.10.014 https://archimer.ifremer.fr/doc/00686/79845/ |
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ftarchimer:oai:archimer.ifremer.fr:79845 |
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openpolar |
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Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
C1 chondrite Carbonaceous chondrite Aqueous alteration Carbonates Early solar system Oldest carbonates in solar system Unique chondrite Ungrouped C chondrite |
spellingShingle |
C1 chondrite Carbonaceous chondrite Aqueous alteration Carbonates Early solar system Oldest carbonates in solar system Unique chondrite Ungrouped C chondrite Bischoff, Addi Alexander, Conel M. O'D Barrat, Jean-alix Burkhardt, Christoph Busemann, Henner Degering, Detlev Di Rocco, Tommaso Fischer, Meike Fockenberg, Thomas Foustoukos, Dionysis, I Gattacceca, Jerome Godinho, Jose R. A. Harries, Dennis Heinlein, Dieter Hellmann, Jan L. Hertkorn, Norbert Holm, Anja Jull, A. J. Timothy Kerraouch, Imene King, Ashley J. Kleine, Thorsten Koll, Dominik Lachner, Johannes Ludwig, Thomas Merchel, Silke Mertens, Cornelia A. K. Morino, Precillia Neumann, Wladimir Pack, Andreas Patzek, Markus Pavetich, Stefan Reitze, Maximilian P. Rufenacht, Miriam Rugel, Georg Schmidt, Charlotte Schmitt-kopplin, Philippe Schonbachler, Maria Trieloff, Mario Wallner, Anton Wimmer, Karl Woelfer, Elias The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
topic_facet |
C1 chondrite Carbonaceous chondrite Aqueous alteration Carbonates Early solar system Oldest carbonates in solar system Unique chondrite Ungrouped C chondrite |
description |
On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and the UK. One day later a small meteorite stone was found by accident in Flensburg. The presence of short-lived cosmogenic radionuclides with half-lives as short as 16 days proves the recent exposure of the found object to cosmic rays in space linking it clearly to the bolide event. An exceptionally short exposure time of similar to 5000 years was determined. The 24.5 g stone has a fresh black fusion crust, a low density of <2 g/cm(3), and a magnetic susceptibility of log chi = 4.35 (chi in 10(-9) m(3)/kg). The rock consists of relict chondrules and clusters of sulfide and magnetite grains set in a fine-grained matrix. The most abundant phases are phyllosilicates. Carbonates (similar to 3.9 vol.%) occur as calcites, dolomites, and a Na-rich phase. The relict chondrules (often surrounded by sulfide laths) are free of anhydrous silicates and contain abundant serpentine. Lithic clasts are also surrounded by similar sulfide laths partly intergrown with carbonates. Mn-53-Cr-53 ages of carbonates in Flensburg indicate that brecciation and contemporaneous formation of the pyrrhotite-carbonate intergrowths by hydrothermal activities occurred no later than 4564.6 +/- 1.0 Ma (using the angrite D'Orbigny as the Mn-Cr age anchor). This corresponds to 2.6 +/- 1.0 or 3.4 +/- 1.0 Ma after formation of CAIs, depending on the exact absolute age of CAIs. This is the oldest dated evidence for brecciation and carbonate formation, which likely occurred during parent body growth and incipient heating due to decay of Al-26. In the three oxygen isotope diagram, Flensburg plots at the O-16-rich end of the CM chondrite field and in the transition field to CV-CK-CR chondrites. The mass-dependent Te isotopic composition of Flensburg is slightly different from mean CM chondrites and is most similar to those of the ungrouped C2 chondrite Tagish Lake. On the other hand, Ti-50 and Cr-54 isotope anomalies indicate that Flensburg is similar to CM chondrites, as do the similar to 10 wt.% H2O of the bulk material. Yet, the bulk Zn, Cu, and Pb concentrations are about 30% lower than those of mean CM chondrites. The He, Ne, and Ar isotopes of Flensburg show no solar wind contribution; its trapped noble gas signature is similar to that of CMs with a slightly lower concentration of Ne-20(tr). Based on the bulk H, C, and N elemental abundances and isotopic compositions, Flensburg is unique among chondrites, because it has the lightest bulk H and N isotopic compositions of any type 1 or 2 chondrite investigated so far. Moreover, the number of soluble organic compounds in Flensburg is even lower than that of the brecciated CI chondrite Orgueil. The extraordinary significance of Flensburg is evident from the observation that it represents the oldest chondrite sample in which the contemporaneous episodes of aqueous alteration and brecciation have been preserved. The characterization of a large variety of carbonaceous chondrites with different alteration histories is important for interpreting returned samples from the OSIRIS-REx and Hayabusa 2 missions. (C) 2020 The Authors. Published by Elsevier Ltd. |
format |
Article in Journal/Newspaper |
author |
Bischoff, Addi Alexander, Conel M. O'D Barrat, Jean-alix Burkhardt, Christoph Busemann, Henner Degering, Detlev Di Rocco, Tommaso Fischer, Meike Fockenberg, Thomas Foustoukos, Dionysis, I Gattacceca, Jerome Godinho, Jose R. A. Harries, Dennis Heinlein, Dieter Hellmann, Jan L. Hertkorn, Norbert Holm, Anja Jull, A. J. Timothy Kerraouch, Imene King, Ashley J. Kleine, Thorsten Koll, Dominik Lachner, Johannes Ludwig, Thomas Merchel, Silke Mertens, Cornelia A. K. Morino, Precillia Neumann, Wladimir Pack, Andreas Patzek, Markus Pavetich, Stefan Reitze, Maximilian P. Rufenacht, Miriam Rugel, Georg Schmidt, Charlotte Schmitt-kopplin, Philippe Schonbachler, Maria Trieloff, Mario Wallner, Anton Wimmer, Karl Woelfer, Elias |
author_facet |
Bischoff, Addi Alexander, Conel M. O'D Barrat, Jean-alix Burkhardt, Christoph Busemann, Henner Degering, Detlev Di Rocco, Tommaso Fischer, Meike Fockenberg, Thomas Foustoukos, Dionysis, I Gattacceca, Jerome Godinho, Jose R. A. Harries, Dennis Heinlein, Dieter Hellmann, Jan L. Hertkorn, Norbert Holm, Anja Jull, A. J. Timothy Kerraouch, Imene King, Ashley J. Kleine, Thorsten Koll, Dominik Lachner, Johannes Ludwig, Thomas Merchel, Silke Mertens, Cornelia A. K. Morino, Precillia Neumann, Wladimir Pack, Andreas Patzek, Markus Pavetich, Stefan Reitze, Maximilian P. Rufenacht, Miriam Rugel, Georg Schmidt, Charlotte Schmitt-kopplin, Philippe Schonbachler, Maria Trieloff, Mario Wallner, Anton Wimmer, Karl Woelfer, Elias |
author_sort |
Bischoff, Addi |
title |
The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
title_short |
The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
title_full |
The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
title_fullStr |
The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
title_full_unstemmed |
The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
title_sort |
old, unique c1 chondrite flensburg - insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00686/79845/82672.pdf https://archimer.ifremer.fr/doc/00686/79845/82673.pdf https://doi.org/10.1016/j.gca.2020.10.014 https://archimer.ifremer.fr/doc/00686/79845/ |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
Geochimica Et Cosmochimica Acta (0016-7037) (Pergamon-elsevier Science Ltd), 2021-01 , Vol. 293 , P. 142-186 |
op_relation |
https://archimer.ifremer.fr/doc/00686/79845/82672.pdf https://archimer.ifremer.fr/doc/00686/79845/82673.pdf doi:10.1016/j.gca.2020.10.014 https://archimer.ifremer.fr/doc/00686/79845/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.gca.2020.10.014 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
293 |
container_start_page |
142 |
op_container_end_page |
186 |
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1766213598279892992 |
spelling |
ftarchimer:oai:archimer.ifremer.fr:79845 2023-05-15T18:30:07+02:00 The old, unique C1 chondrite Flensburg - Insight into the first processes of aqueous alteration, brecciation, and the diversity of water-bearing parent bodies and lithologies Bischoff, Addi Alexander, Conel M. O'D Barrat, Jean-alix Burkhardt, Christoph Busemann, Henner Degering, Detlev Di Rocco, Tommaso Fischer, Meike Fockenberg, Thomas Foustoukos, Dionysis, I Gattacceca, Jerome Godinho, Jose R. A. Harries, Dennis Heinlein, Dieter Hellmann, Jan L. Hertkorn, Norbert Holm, Anja Jull, A. J. Timothy Kerraouch, Imene King, Ashley J. Kleine, Thorsten Koll, Dominik Lachner, Johannes Ludwig, Thomas Merchel, Silke Mertens, Cornelia A. K. Morino, Precillia Neumann, Wladimir Pack, Andreas Patzek, Markus Pavetich, Stefan Reitze, Maximilian P. Rufenacht, Miriam Rugel, Georg Schmidt, Charlotte Schmitt-kopplin, Philippe Schonbachler, Maria Trieloff, Mario Wallner, Anton Wimmer, Karl Woelfer, Elias 2021-01 application/pdf https://archimer.ifremer.fr/doc/00686/79845/82672.pdf https://archimer.ifremer.fr/doc/00686/79845/82673.pdf https://doi.org/10.1016/j.gca.2020.10.014 https://archimer.ifremer.fr/doc/00686/79845/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00686/79845/82672.pdf https://archimer.ifremer.fr/doc/00686/79845/82673.pdf doi:10.1016/j.gca.2020.10.014 https://archimer.ifremer.fr/doc/00686/79845/ info:eu-repo/semantics/openAccess restricted use Geochimica Et Cosmochimica Acta (0016-7037) (Pergamon-elsevier Science Ltd), 2021-01 , Vol. 293 , P. 142-186 C1 chondrite Carbonaceous chondrite Aqueous alteration Carbonates Early solar system Oldest carbonates in solar system Unique chondrite Ungrouped C chondrite text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1016/j.gca.2020.10.014 2021-09-23T20:37:31Z On September 12, 2019 at 12:49:48 (UT) a bolide was observed by hundreds of eye-witnesses from the Netherlands, Germany, Belgium, Denmark and the UK. One day later a small meteorite stone was found by accident in Flensburg. The presence of short-lived cosmogenic radionuclides with half-lives as short as 16 days proves the recent exposure of the found object to cosmic rays in space linking it clearly to the bolide event. An exceptionally short exposure time of similar to 5000 years was determined. The 24.5 g stone has a fresh black fusion crust, a low density of <2 g/cm(3), and a magnetic susceptibility of log chi = 4.35 (chi in 10(-9) m(3)/kg). The rock consists of relict chondrules and clusters of sulfide and magnetite grains set in a fine-grained matrix. The most abundant phases are phyllosilicates. Carbonates (similar to 3.9 vol.%) occur as calcites, dolomites, and a Na-rich phase. The relict chondrules (often surrounded by sulfide laths) are free of anhydrous silicates and contain abundant serpentine. Lithic clasts are also surrounded by similar sulfide laths partly intergrown with carbonates. Mn-53-Cr-53 ages of carbonates in Flensburg indicate that brecciation and contemporaneous formation of the pyrrhotite-carbonate intergrowths by hydrothermal activities occurred no later than 4564.6 +/- 1.0 Ma (using the angrite D'Orbigny as the Mn-Cr age anchor). This corresponds to 2.6 +/- 1.0 or 3.4 +/- 1.0 Ma after formation of CAIs, depending on the exact absolute age of CAIs. This is the oldest dated evidence for brecciation and carbonate formation, which likely occurred during parent body growth and incipient heating due to decay of Al-26. In the three oxygen isotope diagram, Flensburg plots at the O-16-rich end of the CM chondrite field and in the transition field to CV-CK-CR chondrites. The mass-dependent Te isotopic composition of Flensburg is slightly different from mean CM chondrites and is most similar to those of the ungrouped C2 chondrite Tagish Lake. On the other hand, Ti-50 and Cr-54 isotope anomalies indicate that Flensburg is similar to CM chondrites, as do the similar to 10 wt.% H2O of the bulk material. Yet, the bulk Zn, Cu, and Pb concentrations are about 30% lower than those of mean CM chondrites. The He, Ne, and Ar isotopes of Flensburg show no solar wind contribution; its trapped noble gas signature is similar to that of CMs with a slightly lower concentration of Ne-20(tr). Based on the bulk H, C, and N elemental abundances and isotopic compositions, Flensburg is unique among chondrites, because it has the lightest bulk H and N isotopic compositions of any type 1 or 2 chondrite investigated so far. Moreover, the number of soluble organic compounds in Flensburg is even lower than that of the brecciated CI chondrite Orgueil. The extraordinary significance of Flensburg is evident from the observation that it represents the oldest chondrite sample in which the contemporaneous episodes of aqueous alteration and brecciation have been preserved. The characterization of a large variety of carbonaceous chondrites with different alteration histories is important for interpreting returned samples from the OSIRIS-REx and Hayabusa 2 missions. (C) 2020 The Authors. Published by Elsevier Ltd. Article in Journal/Newspaper Tagish Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) Geochimica et Cosmochimica Acta 293 142 186 |