Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice
Astrobiology
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Abstract
Unique springs, discharging from the surface of an arctic glacier, release H2S and deposit native sulfur, gypsum, and calcite. The presence of sulfur in three oxidation states indicates a complex series of redox reactions. Physical and chemical conditions of the spring water and surrounding environment, as well as mineralogical and isotopic signatures, suggest biologically mediated reactions. Cell counts and DNA analyses confirm bacteria are present in the spring system, and a limited number of sequenced isolates suggests that complex communities of bacteria live within the glacial system.
Suggested Citation
Grasby, S.E., Allen, C.C., Longazo, T.G., Lisle, J.T., Griffin, D.W., and Beauchamp, B., 2003, Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice: Astrobiology, v. 3, no. 3, p. 583-596, https://doi.org/10.1089/153110703322610672.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Supraglacial sulfur springs and associated biological activity in the Canadian high arctic - signs of life beneath the ice |
| Series title | Astrobiology |
| DOI | 10.1089/153110703322610672 |
| Volume | 3 |
| Issue | 3 |
| Year Published | 2003 |
| Language | English |
| Publisher | Mary Ann Liebert, Inc. |
| Contributing office(s) | Coastal and Marine Geology Progam |
| Description | 14 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Astrobiology |
| First page | 583 |
| Last page | 596 |
| Country | Canada |