The session of the International Association of Sedimentologists’ meeting in 1998 that spawned this publication was one of the first devoted to catastrophism in sedimentary geology and as such it sparked quite a lot of interest. Even those of us familiar with the reports of jokulhlaups such as the 1996 event on Skeidararsandur, Iceland (various aspects of which are documented by three separate papers in this volume) were awed by the scale of Pleistocene events in North America and central Asia described by Vic Baker at the conference and summarized in the review paper which opens this volume. Giant gravel...

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