Columnar-jointed bentonite below a doleritic sill, Tideswell Dale, Derbyshire, UK: formation during prograde contact metamorphism (Geological Magazine, 2020)

(untitled) - Mullineux, S; Sparks, RSJ; Murphy, MD; MacNiocaill, C; Barfod, D; Njorka, J; Schumacher, JC