Erosion of Cascade Volcanoes

Erosion of Volcanoes in Cascade Region - About 50±15 to 245±24 km³ of volcanic material has eroded from Cascade volcanoes during the Quaternary period. - Erosion rates can vary greatly, with differences of 5-8 orders of magnitude. - The size of a volcano's area is related to how much material has eroded; generally, larger volcanoes lose more material. - Comparison of Different Volcano Types: - Erosion is higher in scoria cones than in shield and composite volcanoes. - Volcanic rocks with low and intermediate silica (like basalt and andesite) erode faster than more evolved types (like dacite and rhyolite). - Figures and Data: - See Figures 4A-C for trends and relationships in erosion. - Convex-hull and ray-based methods are used to analyze eroded material.