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

• Published in: Frontiers in Earth Science
• Main Authors: Catherine Hirst, Sophie Opfergelt, François Gaspard, Katharine R. Hendry, Jade E. Hatton, Susan Welch, Diane M. McKnight, W. Berry Lyons
• Format: Article in Journal/Newspaper
• Language: English
• Published: Frontiers Media S.A. 2020
• Subjects: silicon isotopes; hyporheic zone; permafrost; weathering; Antarctica; Science; Q; Arctic; Austral; McMurdo Dry Valleys; Crescent Stream; Antarc*
• Online Access: https://doi.org/10.3389/feart.2020.00229; https://doaj.org/article/80008a10b0d34c7cb20466a95831d243

In high latitude environments, silicon is supplied to river waters by both glacial and non-glacial 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 g...