Quartz weathering in freeze–thaw cycles: experiment and application to the El’gygytgyn Crater Lake record for tracing Siberian permafrost history

• Published in: Geografiska Annaler: Series A, Physical Geography
• Main Authors: Schwamborn, Georg, Schirrmeister, Lutz, Frütsch, Franziska, Diekmann, Bernhard
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2012
• Subjects: Arctic; Crater Lake; Ice; permafrost
• Online Access: https://epic.awi.de/id/eprint/30822/; https://epic.awi.de/id/eprint/30822/1/Schwamborn2012GA.pdf; http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0459.2012.00472.x/abstract; https://hdl.handle.net/10013/epic.40291; https://hdl.handle.net/10013/epic.40291.d001

The object of this study is to test the assumption that cryogenic weathering (here understood as in-situ disintegration of rock under cold-climate conditions including ice as a weathering agent) preferentially breaks up quartz grains. We apply the results of laboratory tests to a Quaternary sediment...