Talk:Groundwater sapping

Mars gullies
In the scientific literature, it isn't widely thought that Mars gullies are caused by groundwater sapping, now, so this article is a little off-base in that respect. candidate references https://www.sciencedirect.com/science/article/abs/pii/S0019103512001340 http://www.planetary.brown.edu/pdfs/3438.pdf (third paragraph on p. 197) — Preceding unsigned comment added by 198.122.196.91 (talk) 19:11, 13 November 2019 (UTC)