Crater Lake, Gem of the Cascades: The Geological Story of Crater Lake National Park |
Contents
DISCOVERY | 2 |
BEFORE MOUNT MAZAMA | 26 |
BUILDING MOUNT MAZAMA | 36 |
Copyright | |
2 other sections not shown
Common terms and phrases
andesite ash fall ash flows basaltic caldera wall Cascade Range Cascade volcanoes Chapter cinder cones climactic eruption collapse composite cones composite volcano cooling Crater Lake caldera Crater Lake National Creek dacite dacite dome debris developed dikes erosion evidence explosive final eruptions flank fluid Forgotten Crater formed fumaroles gases geologists glacial activity glaciers heat High Cascades Hillman inside the caldera Klamath km³ lake level Lake National Park Lake's lapilli lava flows layers Llao Rock located magma chamber magnetic mass wastage massive Mazama ash Merriam Cone Mi³ Mount Mazama mountain occur ocean floor Oregon original Pacific particles Peak Picture portion produced pumice pyroclastic ejecta pyroclastic flows pyroclastic material radioactive carbon region represent result rhyolite ring fracture scoria sediments shield cones slopes subduction zone temperature tephra thick trench vent volcanic activity volcanic cone volcanic rocks Western Cascades Williams Wizard Island