Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?)
We are investigating a set of cold springs that deposit sulfur and carbonate minerals on the surface of a Canadian arctic glacier. The spring waters and mineral deposits contain microorganisms, as well as clear evidence that biological processes mediate subglacial chemistry, mineralogy, and isotope...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20110011529 2023-05-15T15:07:12+02:00 Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) Longazo, Teresa G. Allen, Carlton C. Beauchamp, Benoit Grasby, Stephen E. Lisle, John T. Unclassified, Unlimited, Publicly available April 07, 2002 application/pdf http://hdl.handle.net/2060/20110011529 unknown Document ID: 20110011529 http://hdl.handle.net/2060/20110011529 Copyright, Distribution as joint owner in the copyright CASI Lunar and Planetary Science and Exploration JSC-CN-7494 Astrobiology Science Conference 2002; 7-11 Apr. 2002; Mountain View, CA; United States 2002 ftnasantrs 2019-07-21T01:03:24Z We are investigating a set of cold springs that deposit sulfur and carbonate minerals on the surface of a Canadian arctic glacier. The spring waters and mineral deposits contain microorganisms, as well as clear evidence that biological processes mediate subglacial chemistry, mineralogy, and isotope fractionation . The formation of native sulphur and associated deposits are related to bacterially mediated reduction and oxidation of sulphur below the glacier. A non-volcanic, topography driven geothermal system, harboring a microbiological community, operates in an extremely cold environment and discharges through solid ice. Microbial life can thus exist in isolated geothermal refuges despite long-term subfreezing surface conditions. Earth history includes several periods of essentially total glaciation. lee in the near subsurface of Mars may have discharged liquid water in the recent past Cracks in the ice crust of Europa have apparently allowed the release of water to the surface. Chemolithotrophic bacteria, such as those in the Canadian springs, could have survived beneath the ice of "Snowball Earth", and life forms with similar characteristics might exist beneath the ice of Mars or Europa. Discharges of water from such refuges may have brought to the surface living microbes, as well as longlasting chemical, mineralogical, and isotopic indications of subsurface life. Other/Unknown Material Arctic NASA Technical Reports Server (NTRS) Arctic |
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Open Polar |
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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 Longazo, Teresa G. Allen, Carlton C. Beauchamp, Benoit Grasby, Stephen E. Lisle, John T. Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
topic_facet |
Lunar and Planetary Science and Exploration |
description |
We are investigating a set of cold springs that deposit sulfur and carbonate minerals on the surface of a Canadian arctic glacier. The spring waters and mineral deposits contain microorganisms, as well as clear evidence that biological processes mediate subglacial chemistry, mineralogy, and isotope fractionation . The formation of native sulphur and associated deposits are related to bacterially mediated reduction and oxidation of sulphur below the glacier. A non-volcanic, topography driven geothermal system, harboring a microbiological community, operates in an extremely cold environment and discharges through solid ice. Microbial life can thus exist in isolated geothermal refuges despite long-term subfreezing surface conditions. Earth history includes several periods of essentially total glaciation. lee in the near subsurface of Mars may have discharged liquid water in the recent past Cracks in the ice crust of Europa have apparently allowed the release of water to the surface. Chemolithotrophic bacteria, such as those in the Canadian springs, could have survived beneath the ice of "Snowball Earth", and life forms with similar characteristics might exist beneath the ice of Mars or Europa. Discharges of water from such refuges may have brought to the surface living microbes, as well as longlasting chemical, mineralogical, and isotopic indications of subsurface life. |
format |
Other/Unknown Material |
author |
Longazo, Teresa G. Allen, Carlton C. Beauchamp, Benoit Grasby, Stephen E. Lisle, John T. |
author_facet |
Longazo, Teresa G. Allen, Carlton C. Beauchamp, Benoit Grasby, Stephen E. Lisle, John T. |
author_sort |
Longazo, Teresa G. |
title |
Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
title_short |
Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
title_full |
Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
title_fullStr |
Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
title_full_unstemmed |
Life Beneath Glacial Ice - Earth(!) Mars(?) Europa(?) |
title_sort |
life beneath glacial ice - earth(!) mars(?) europa(?) |
publishDate |
2002 |
url |
http://hdl.handle.net/2060/20110011529 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
CASI |
op_relation |
Document ID: 20110011529 http://hdl.handle.net/2060/20110011529 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766338758983024640 |