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The Taupo Volcanic Zone (TVZ), New Zealand, is the most productive area of explosive silicic volcanism in the world. Faulted early and middle Pleistocene volcanic products are generally concealed beneath voluminous, generally unfaulted, younger volcanic products. An exception is the southeast margin of the TVZ where the two parallel, northeast-trending Paeroa and Te Weta Fault blocks expose Quaternary volcanic products consisting predominantly of caldera-related, rhyolitic ignimbrites and lacustrine sediments. The Taupo-Reporoa Basin is situated along the eastern part of the map area, and its northernmost part underwent collapse to form Reporoa Caldera. The Paeroa Fault block is the largest exposed fault block within...
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This report provides detailed (1:63,360-scale) mapping of the Tanana A-1 and A-2 quadrangles (500 square miles; equivalent to eight 7.5-minute quadrangles). The area is part of the Manley Hot Springs-Tofty mining districts and adjacent to the Rampart mining district to the south of the Tanana B-1 Quadrangle. This report includes detailed bedrock, structural, and stratigraphic data. The Tanana A-1 and A-2 Quadrangles and surrounding area comprise several isolated mountainous ridges in the western Yukon-Tanana Upland of interior Alaska.


    map background search result map search result map Interpretive geologic bedrock map of the Tanana A-1 and A-2 quadrangles, central Alaska USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1991 Database for the geologic map of the Paeroa Fault block and surrounding area, Taupo Volcanic Zone, New Zealand USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1955 USGS 1:24000-scale Quadrangle for Dome, AZ 1991 Database for the geologic map of the Paeroa Fault block and surrounding area, Taupo Volcanic Zone, New Zealand