Type 1 Refolded Folds

Type 1 fold interference patter, characterized by domes and basins, from Loch Monar, Scotland. Looking down on the outcrop surface, this pattern derives from two upright fold sets, one trending left-right and the other up-down. Photo credit: Rob Knipe. Image from website: http://earth.leeds.ac.uk/learnstructure/index.htm