Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances
Surface sediments at Lakes Fryxell, Vanda and Brownworth in the Antarctic Dry Valleys (ADV) were investigated as analogues for the cold, dry environment on Mars. Sediments were sampled from regions surrounding the lakes and from the ice cover on top of the lakes. The ADV sediments were studied using...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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crroyalsociety:10.1098/rsta.2014.0198 2024-09-15T17:43:45+00:00 Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances Bishop, Janice L. Englert, Peter A. J. Patel, Shital Tirsch, Daniela Roy, Alex J. Koeberl, Christian Böttger, Ute Hanke, Franziska Jaumann, Ralf 2014 http://dx.doi.org/10.1098/rsta.2014.0198 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0198 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0198 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 372, issue 2030, page 20140198 ISSN 1364-503X 1471-2962 journal-article 2014 crroyalsociety https://doi.org/10.1098/rsta.2014.0198 2024-07-15T04:26:45Z Surface sediments at Lakes Fryxell, Vanda and Brownworth in the Antarctic Dry Valleys (ADV) were investigated as analogues for the cold, dry environment on Mars. Sediments were sampled from regions surrounding the lakes and from the ice cover on top of the lakes. The ADV sediments were studied using Raman spectra of individual grains and reflectance spectra of bulk particulate samples and compared with previous analyses of subsurface and lakebottom sediments. Elemental abundances were coordinated with the spectral data in order to assess trends in sediment alteration. The surface sediments in this study were compared with lakebottom sediments (Bishop JL et al . 2003 Int. J. Astrobiol . 2 , 273–287 ( doi:10.1017/S1473550403001654 )) and samples from soil pits (Englert P et al . 2013 In European Planetary Science Congress , abstract no. 96; Englert P et al . 2014 In 45th Lunar and Planetary Science Conf. , abstract no. 1707). Feldspar, quartz and pyroxene are common minerals found in all the sediments. Minor abundances of carbonate, chlorite, actinolite and allophane are also found in the surface sediments, and are similar to minerals found in greater abundance in the lakebottom sediments. Surface sediment formation is dominated by physical processes; a few centimetres below the surface chemical alteration sets in, whereas lakebottom sediments experience biomineralization. Characterizing the mineralogical variations in these samples provides insights into the alteration processes occurring in the ADV and supports understanding alteration in the cold and dry environment on Mars. Article in Journal/Newspaper Antarc* Antarctic The Royal Society Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 2030 20140198 |
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The Royal Society |
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English |
description |
Surface sediments at Lakes Fryxell, Vanda and Brownworth in the Antarctic Dry Valleys (ADV) were investigated as analogues for the cold, dry environment on Mars. Sediments were sampled from regions surrounding the lakes and from the ice cover on top of the lakes. The ADV sediments were studied using Raman spectra of individual grains and reflectance spectra of bulk particulate samples and compared with previous analyses of subsurface and lakebottom sediments. Elemental abundances were coordinated with the spectral data in order to assess trends in sediment alteration. The surface sediments in this study were compared with lakebottom sediments (Bishop JL et al . 2003 Int. J. Astrobiol . 2 , 273–287 ( doi:10.1017/S1473550403001654 )) and samples from soil pits (Englert P et al . 2013 In European Planetary Science Congress , abstract no. 96; Englert P et al . 2014 In 45th Lunar and Planetary Science Conf. , abstract no. 1707). Feldspar, quartz and pyroxene are common minerals found in all the sediments. Minor abundances of carbonate, chlorite, actinolite and allophane are also found in the surface sediments, and are similar to minerals found in greater abundance in the lakebottom sediments. Surface sediment formation is dominated by physical processes; a few centimetres below the surface chemical alteration sets in, whereas lakebottom sediments experience biomineralization. Characterizing the mineralogical variations in these samples provides insights into the alteration processes occurring in the ADV and supports understanding alteration in the cold and dry environment on Mars. |
format |
Article in Journal/Newspaper |
author |
Bishop, Janice L. Englert, Peter A. J. Patel, Shital Tirsch, Daniela Roy, Alex J. Koeberl, Christian Böttger, Ute Hanke, Franziska Jaumann, Ralf |
spellingShingle |
Bishop, Janice L. Englert, Peter A. J. Patel, Shital Tirsch, Daniela Roy, Alex J. Koeberl, Christian Böttger, Ute Hanke, Franziska Jaumann, Ralf Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
author_facet |
Bishop, Janice L. Englert, Peter A. J. Patel, Shital Tirsch, Daniela Roy, Alex J. Koeberl, Christian Böttger, Ute Hanke, Franziska Jaumann, Ralf |
author_sort |
Bishop, Janice L. |
title |
Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
title_short |
Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
title_full |
Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
title_fullStr |
Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
title_full_unstemmed |
Mineralogical analyses of surface sediments in the Antarctic Dry Valleys: coordinated analyses of Raman spectra, reflectance spectra and elemental abundances |
title_sort |
mineralogical analyses of surface sediments in the antarctic dry valleys: coordinated analyses of raman spectra, reflectance spectra and elemental abundances |
publisher |
The Royal Society |
publishDate |
2014 |
url |
http://dx.doi.org/10.1098/rsta.2014.0198 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0198 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0198 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 372, issue 2030, page 20140198 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2014.0198 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
372 |
container_issue |
2030 |
container_start_page |
20140198 |
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1810490910504386560 |