https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Controls on sill and dyke-sill hybrid geometry and propagation in the crust: the role of fracture toughness https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30697 K_Ic* as the fracture toughness of the interface between layers relative to the lower gelatine layer K_IcInt / K_IcG. Our results show that K_Ic* influences the type of intrusion formed (dyke, sill or hybrid), and the magnitude of KIcInt impacted the growth rate of the sills. K_IcInt was determined during setup of the experiment by controlling the temperature of the upper layer T_m when it was poured into place, with T_m < 24 °C resulting in an interface with relatively low fracture toughness that is favourable for sill or dyke-sill hybrid formation. The experiments help to explain the dominance of dykes and sills in the rock record, compared to intermediate hybrid structures.]]> Wed 11 Apr 2018 16:07:31 AEST ]]> The mechanics of sill inception, propagation and growth: experimental evidence for rapid reduction in magmatic overpressure https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26971 Sat 24 Mar 2018 07:27:00 AEDT ]]>