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1744 - Quaternary Magmatism in the Cascades - Geologic Perspectives [texte imprimé] / Wes Hildreth, Auteur . - 2007 . - 1 vol. (vii-125 p.) : ill. en noir et coul., cartes, couv. ill. en coul. ; 28 cm. Langues : Américain | Résumé : | Foreward The Cascade magmatic arc is a belt of Quaternary volcanoes that extends 1,250 km from Lassen Peak in northern California to Meager Mountain in Canada, above the subduction zone where the Juan de Fuca Plate plunges beneath the North American Plate. We present a synthesis of the entire volcanic arc, addressing all 2,300 known Quaternary volcanoes, not just the 30 or so visually prominent peaks that comprise the volcanic skyline. Study of Cascade volcanoes goes back to the geological explorers of the late 19th century and the seminal investigations of Howel Williams in the 1920s and 1930s. However, major progress and application of modern scientific methods and instrumentation began only in the 1970s with the advent of systematic geological, geophysical, and geochemical studies of the entire arc. Initial stimulus from the USGS Geothermal Research Program was enhanced by the USGS Volcano Hazards Program following the 1980 eruption of Mount St. Helens. Together, these two USGS Programs have provided more than three decades of stable funding, staffing, and analytical support. |
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Faire une suggestion Affiner la recherche1744 - Quaternary Magmatism in the Cascades - Geologic Perspectives (Bulletin de U.S. Geological Survey professional paper, 1744 [01/01/2007])
