Katharine Gilchrist: Unravelling Volcanic Field Behaviour Using Paleomagnetic Techniques: Western USA Field Comparison

Monogenetic fields are built by discrete eruptions, the behaviour of which can be studied through analysis of their exhumed volcanic plumbing system. Dykes are conventionally considered to feed magma to the eruptive vents in these fields, and the role that sills and interconnected dyke-sill networks play in feeding eruptions in these systems is poorly understood. To test the use of paleomagnetic data for examining the timing and interconnectivity of monogenetic magmatic systems, we address the following questions:1) Can monogenetic volcanoes form interconnected dyke-sill networks? 2) Do clustered intrusive and volcanic vent networks only form during a single eruptive event, or can they form over longer time periods (e.g. >1000 years)?