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This publication updates previous fault maps of Oregon as a contribution to the larger U.S. Geological Survey effort to produce digital maps of active faults in the Pacific Northwest region. The new map is derived from the 1992 fault map of Pezzopane, Nakata, and Weldon that has seen wide distribution and has been reproduced in essentially all subsequent compilations of active faults of Oregon. This publication provides a substantial update of known active or suspected active faults east of the Cascades. Improvements in the new map include (1) many newly recognized active faults, (2) a linked ArcInfo map and reference database, (3) more precise locations for previously recognized faults on shaded relief quadrangles...
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This publication updates previous fault maps of Oregon as acontribution to the larger U.S. Geological Survey effort to producedigital maps of active faults in the Pacific Northwest region. The newmap is derived from the 1992 fault map of Pezzopane, Nakata, and Weldonthat has seen wide distribution and has been reproduced in essentiallyall subsequent compilations of active faults of Oregon. Thispublication provides a substantial update of known active or suspectedactive faults east of the Cascades. Improvements in the new mapinclude (1) many newly recognized active faults, (2) a linked ArcInfomap and reference database, (3) more precise locations for previouslyrecognized faults on shaded relief quadrangles generated...
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This map of selected post-Nevadan features is in a sensesupplementary to Map I-2148 (Geologic map of the Klamath Mountains,compiled by W.P. Irwin, 1994). The map of selected post-Nevadangeologic features is in large part a compilation of the publishedwork of many geologists (see Fig. 1--Index map showing sources ofdata). The principal focus of Map I-2148 concerned the assemblageof terranes that constitute the principal bedrock of the KlamathMountains. The terranes of the Klamath Mountains variously consistof rocks that range from Cambrian to Late Jurassic and perhaps evenearliest Cretaceous age. All of these terranes have been subjectedto episodes of metamorphism, plutonism, and tectonism, including amajor widespread...


    map background search result map search result map An update of Quaternary faults of central and eastern Oregon An update of Quaternary faults of central and eastern Oregon Preliminary map of selected post-Nevadan geologic features of the Klamath Mountains and adjacent areas, California and Oregon: A digital database Preliminary map of selected post-Nevadan geologic features of the Klamath Mountains and adjacent areas, California and Oregon: A digital database An update of Quaternary faults of central and eastern Oregon An update of Quaternary faults of central and eastern Oregon