Geochemical variations within the mid-Silurian Grotlingbo Bentonite (Gotland, Sweden): discriminating between magmatic composition, ash transport fractionation and diagenetic effects
This paper reports on the geochemistry of the mid-Silurian Grotlingbo Bentonite, a ca. 0.10.4-m-thick and regionally important bentonite bed in Sweden and the East Baltic area. A series of eight samples, spaced by 5cm, were taken from the Hunninge-1 drillcore in Gotland, Sweden, and were analysed in order to establish the vertical element composition and variation in the bentonite. The results sho
