Quaternary volcanism in the United States

摘要: Publisher Summary This chapter describes the concept of volcanic loci––vents or groups vents that define logical units volcanism in space and time––and focuses on advances understanding Quaternary history areas United States key processes evolution volcanoes. Large flank failures caldera-forming eruptions catastrophically change form some edifices; subsequent rebuilt many them. Some long-lived fields show evidence migration active vent through time as North American Plate moved relative to a deeper fixed zone magma genesis. Hawaiian Islands reflect related movement Pacific across hot spot. Each major volcano follows general from submarine rapidly growing emergent shield volcano. The detailed mapping, geochronologic, geophysical, petrologic investigations centers U.S. reveal new insights about long-term eruptive history; magma-genesis, -transport, -eruption processes; influence tectonics systems.