Silicon Isotopes Reveal a Non-glacial Source of Silicon to Crescent Stream, McMurdo Dry Valleys, Antarctica

• Published in: Frontiers in Earth Science
• Main Authors: Hirst, Catherine, Opfergelt, Sophie, Gaspard, François, Hendry, Katharine R., Hatton, Jade E., Welch, Susan, McKnight, Diane M., Berry Lyons, W.
• Other Authors: UCL - SST/ELI/ELIE - Environmental Sciences
• Format: Article in Journal/Newspaper
• Language: English
• Published: Frontiers Media SA 2020
• Subjects: silicon; isotopes; hyporheic zone; permafrost; weathering; Antartica; Arctic; Austral; Crescent Stream; McMurdo Dry Valleys; Antarc*; Antarctica; antartic*
• Online Access: http://hdl.handle.net/2078.1/231959; https://doi.org/10.3389/feart.2020.00229

In high latitude environments, silicon is supplied to river waters by both glacial and nonglacial chemical weathering. The signal of these two end-members is often obscured by biological uptake and/or groundwater input in the river catchment. McMurdo Dry Valleys streams in Antarctica have no deep gr...