U.S. Geological Survey Bulletin, Issues 1895-1903U.S. Government Printing Office, 1983 - Geology |
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Agua de Pau Alaska amplitude analysis Ankhelasma Basin Bernardino Valley region Brooks Range caldera Carrara chert Composite Zone conodont corals Cottingham Creek Member deposits earthquake element eruptions evaluation fault Figure flows Furnas geologic map Geological Survey Bulletin Geological Survey Open-File Glacier National Park Glacier Peak granite Granodiorite ground failure GSMAP Helens Jy ashes Holocene indicate Lake liquefaction susceptibility mafic manzanita Marias Pass Mazama ash metamorphic minerals moraines Mount St Mountains N₁ National Park region Newala Nome occur Ordovician Peak G ash percent pine plagioclase Pleistocene pluton Proterozoic quadrangle quartz Quaternary radiocarbon age Range ratio River rocks San Andreas San Bernardino Valley sand Sando sediment sedimentary seismic Sete Cidades shelf margin silt silty SiO2 soil stratigraphic subsurface Survey Open-File Report terrane thick trachyte U.S. Geological Survey unit upper USGS USNM values Viséan volcano western zircon