Supraglacial Sulfur Springs and Associated Biological Activity in the Canadian High Arctic—Signs of Life Beneath the Ice
- 1 September 2003
- journal article
- Published by Mary Ann Liebert Inc in Astrobiology
- Vol. 3 (3) , 583-596
- https://doi.org/10.1089/153110703322610672
Abstract
Unique springs, discharging from the surface of an arctic glacier, release H(2)S 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.Keywords
This publication has 35 references indexed in Scilit:
- Gene organization and primary structure of a ribosomal RNA operon from Escherichia coliPublished by Elsevier ,2004
- Polymeric substances and biofilms as biomarkers in terrestrial materials: Implications for extraterrestrial samplesJournal of Geophysical Research, 2000
- Geologic mapping of EuropaJournal of Geophysical Research, 2000
- Recharge and Preservation of Laurentide Glacial Melt Water in the Canadian ShieldGroundwater, 2000
- Reversal of the regional-scale flow system of the Williston basin in response to Pleistocene glaciationGeology, 2000
- Evidence for Recent Groundwater Seepage and Surface Runoff on MarsScience, 2000
- The influence of water–rock interaction on the chemistry of thermal springs in western CanadaApplied Geochemistry, 2000
- Drainage system behaviour of a High-Arctic polythermal glacierAnnals of Glaciology, 1999
- Basic local alignment search toolJournal of Molecular Biology, 1990
- Field technique for monitoring p-cresol in streamsAnalytical Chemistry, 1982