Conveners:
Derek Keir (Università di Firenze)
Carolina Pagli (Università di Pisa)
Giancarlo Molli (Università di Pisa)
Giacomo Corti (CNR-IGG, Firenze)
In extensional settings, the Earth's lithosphere is stretched and thinned, leading to fault development and in some cases magmatism. A combination of these processes also presents several natural hazards. During the last few decades, the rapid increase in Earth observations has revealed a wide variety of deformation processes in unprecedented detail. However, there are still many unanswered questions regarding the spatial-temporal patterns of deformation, the role of fluids and magmatism, and the coupling and interaction between processes. This session explores the fundamental processes that operate in these regions. We invite contributions that offer insights into the various extensional deformation processes such as how ductile stretching leads to thinning and weakening of the lithosphere, the development and evolution of normal fault systems and rift basins, the role of fluid flow on faulting and stretching, and how these processes interact in space and time. Another key aspect that the session explores is the role of magmatism, how magma ascends and is supplied to a shallow magma domain, how magmatic intrusions and eruptions interact with fault systems, and the influence of magmatism on rheology. This session welcomes contributions from geological, geophysical, and modelling studies dealing with faulting, fluids, magmatism and hazards on the full range of spatial and temporal scales during extension.