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Spectral properties of Titan's impact craters imply chemical weathering of its surface
We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blanket...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012121/ https://www.ncbi.nlm.nih.gov/pubmed/27656006 http://dx.doi.org/10.1002/2015GL063824 |
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author | Neish, C. D. Barnes, J. W. Sotin, C. MacKenzie, S. Soderblom, J. M. Le Mouélic, S. Kirk, R. L. Stiles, B. W. Malaska, M. J. Le Gall, A. Brown, R. H. Baines, K. H. Buratti, B. Clark, R. N. Nicholson, P. D. |
author_facet | Neish, C. D. Barnes, J. W. Sotin, C. MacKenzie, S. Soderblom, J. M. Le Mouélic, S. Kirk, R. L. Stiles, B. W. Malaska, M. J. Le Gall, A. Brown, R. H. Baines, K. H. Buratti, B. Clark, R. N. Nicholson, P. D. |
author_sort | Neish, C. D. |
collection | PubMed |
description | We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blankets of the freshest craters on Titan. The progression is consistent with the chemical weathering of Titan's surface. We propose an evolutionary sequence such that Titan's craters expose an intimate mixture of water ice and organic materials, and chemical weathering by methane rainfall removes the soluble organic materials, leaving the insoluble organics and water ice behind. These observations support the idea that fluvial processes are active in Titan's equatorial regions. |
format | Online Article Text |
id | pubmed-5012121 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-50121212016-09-19 Spectral properties of Titan's impact craters imply chemical weathering of its surface Neish, C. D. Barnes, J. W. Sotin, C. MacKenzie, S. Soderblom, J. M. Le Mouélic, S. Kirk, R. L. Stiles, B. W. Malaska, M. J. Le Gall, A. Brown, R. H. Baines, K. H. Buratti, B. Clark, R. N. Nicholson, P. D. Geophys Res Lett Research Letters We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blankets of the freshest craters on Titan. The progression is consistent with the chemical weathering of Titan's surface. We propose an evolutionary sequence such that Titan's craters expose an intimate mixture of water ice and organic materials, and chemical weathering by methane rainfall removes the soluble organic materials, leaving the insoluble organics and water ice behind. These observations support the idea that fluvial processes are active in Titan's equatorial regions. John Wiley and Sons Inc. 2015-05-28 2015-05-26 /pmc/articles/PMC5012121/ /pubmed/27656006 http://dx.doi.org/10.1002/2015GL063824 Text en ©2015. The Authors. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs (http://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Research Letters Neish, C. D. Barnes, J. W. Sotin, C. MacKenzie, S. Soderblom, J. M. Le Mouélic, S. Kirk, R. L. Stiles, B. W. Malaska, M. J. Le Gall, A. Brown, R. H. Baines, K. H. Buratti, B. Clark, R. N. Nicholson, P. D. Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title | Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title_full | Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title_fullStr | Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title_full_unstemmed | Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title_short | Spectral properties of Titan's impact craters imply chemical weathering of its surface |
title_sort | spectral properties of titan's impact craters imply chemical weathering of its surface |
topic | Research Letters |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5012121/ https://www.ncbi.nlm.nih.gov/pubmed/27656006 http://dx.doi.org/10.1002/2015GL063824 |
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