Dynamics of dikes versus cone sheets in volcanic systems

摘要: Swarms of hundreds to thousands igneous sheet intrusions represent the main magma pathways through Earth’s brittle crust. Igneous various shapes, such as dikes and cone sheets, coexist parts complex volcanic plumbing systems likely fed by common sources. How they form is fundamental regarding hazards, but yet no dynamic model simulates predicts satisfactorily their diversity. Here we present scaled laboratory experiments that reproduced dike intrusion geometries under controlled conditions (Galland et al., 2014). The rock fine-grained, cohesive Coulomb crystalline silica flour. a molten vegetable oil injected at constant flow rate. After experiments, solidifies excavated observe its shape.