Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars
Liquid water was abundant on early Mars, but whether the climate was warm and wet or cold and icy with punctuated periods of melting is still poorly understood. Modern climate models for Mars tend to predict a colder, icier early climate than previously imagined [e.g., 1]. However, any model for the...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20190029154 2023-05-15T13:42:49+02:00 Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars Smith, R. J. Scudder, N. A. Rutledge, A. Horgan, B. Graly, J. Rampe, E. B. Unclassified, Unlimited, Publicly available July 24, 2019 application/pdf http://hdl.handle.net/2060/20190029154 unknown Document ID: 20190029154 http://hdl.handle.net/2060/20190029154 Copyright, Public use permitted CASI Lunar and Planetary Science and Exploration JSC-E-DAA-TN72369 International Conference on Mars; Jul 22, 2019 - Jul 25, 2019; Pasadena, CA; United States 2019 ftnasantrs 2019-08-31T23:01:03Z Liquid water was abundant on early Mars, but whether the climate was warm and wet or cold and icy with punctuated periods of melting is still poorly understood. Modern climate models for Mars tend to predict a colder, icier early climate than previously imagined [e.g., 1]. However, any model for the early climate on Mars must be reconciled with the chemical record. We currently do not understand how alteration mineralogy formed in snow and ice dominated conditions compares to that of warmer climates, and it is unclear whether cold climate weathering could form all or any of the aqueous alteration phases expressed on early martian surfaces [2]. To help resolve this knowledge gap, we synthesize results from glacial Mars analog sites at the Three Sisters, Oregon and mafic regions of the Antarctic ice sheet, and compare them to the surface mineralogy of Mars. These sites provide the opportunity to investigate weathering in environments analogous to glacial environments on Mars throughout geologic time, including snowpacks or smaller wet-based or polythermal glaciers [3, 4] as well as the proposed extensive ice sheets of the late Noachian icy highlands model Other/Unknown Material Antarc* Antarctic Ice Sheet NASA Technical Reports Server (NTRS) Antarctic The Antarctic Three Sisters ENVELOPE(-68.470,-68.470,-71.441,-71.441) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Lunar and Planetary Science and Exploration |
spellingShingle |
Lunar and Planetary Science and Exploration Smith, R. J. Scudder, N. A. Rutledge, A. Horgan, B. Graly, J. Rampe, E. B. Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
Liquid water was abundant on early Mars, but whether the climate was warm and wet or cold and icy with punctuated periods of melting is still poorly understood. Modern climate models for Mars tend to predict a colder, icier early climate than previously imagined [e.g., 1]. However, any model for the early climate on Mars must be reconciled with the chemical record. We currently do not understand how alteration mineralogy formed in snow and ice dominated conditions compares to that of warmer climates, and it is unclear whether cold climate weathering could form all or any of the aqueous alteration phases expressed on early martian surfaces [2]. To help resolve this knowledge gap, we synthesize results from glacial Mars analog sites at the Three Sisters, Oregon and mafic regions of the Antarctic ice sheet, and compare them to the surface mineralogy of Mars. These sites provide the opportunity to investigate weathering in environments analogous to glacial environments on Mars throughout geologic time, including snowpacks or smaller wet-based or polythermal glaciers [3, 4] as well as the proposed extensive ice sheets of the late Noachian icy highlands model |
format |
Other/Unknown Material |
author |
Smith, R. J. Scudder, N. A. Rutledge, A. Horgan, B. Graly, J. Rampe, E. B. |
author_facet |
Smith, R. J. Scudder, N. A. Rutledge, A. Horgan, B. Graly, J. Rampe, E. B. |
author_sort |
Smith, R. J. |
title |
Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
title_short |
Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
title_full |
Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
title_fullStr |
Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
title_full_unstemmed |
Mineralogical Signatures of Cold and Icy Climates on Ancient and Modern Mars |
title_sort |
mineralogical signatures of cold and icy climates on ancient and modern mars |
publishDate |
2019 |
url |
http://hdl.handle.net/2060/20190029154 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-68.470,-68.470,-71.441,-71.441) |
geographic |
Antarctic The Antarctic Three Sisters |
geographic_facet |
Antarctic The Antarctic Three Sisters |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
CASI |
op_relation |
Document ID: 20190029154 http://hdl.handle.net/2060/20190029154 |
op_rights |
Copyright, Public use permitted |
_version_ |
1766173087323127808 |