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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 digital map database, compiled from new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Dixonville 7.5 minute quadrangle along the southeastern margin of the Oregon Coast Range and its tectonic boundary with Mesozoic terranes of the Klamath Mountains. Together with the accompanying text files as PDF (geol.pdf), it provides current information on the geologic structure and stratigraphy of the area covered. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps is 1:24,000. The spatial resolution (scale) of the database is 1:24,000...
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This digital map database, largely compiled from new mapping bythe authors, represents the general distribution of bedrock andsurficial deposits of the Roseburg 30 x 60 minute quadranglealong the southeastern margin of the Oregon Coast Range and itstectonic boundary with Mesozoic terranes of the KlamathMountains. Together with the accompanying text files as PDF(rb_geol.pdf), it provides current information on the geologicstructure and stratigraphy of the area covered. The databasedelineates map units that are identified by general age andlithology following the stratigraphic nomenclature of the U.S.Geological Survey. The scale of the source maps is 1:24,000, butthe Quaternary contacts and structural data have been...
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The Cascadia Tsunami Deposit Database contains data on thelocation and sedimentological properties of tsunami depositsfound along the Cascadia margin. Data have been compiled from52 studies, documenting 59 sites from northern California toVancouver Island, British Columbia that contain known orpotential tsunami deposits. Bibliographical references areprovided for all sites included in the database. Cascadiatsunami deposits are usually seen as anomalous sand layers incoastal marsh or lake sediments. The studies cited in thedatabase use numerous criteria based on sedimentarycharacteristics to distinguish tsunami deposits from sandlayers deposited by other processes, such as river floodingand storm surges. Several...
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The Cascadia Tsunami Deposit Database contains data on the location and sedimentological properties of tsunami deposits found along the Cascadia margin. Data have been compiled from 52 studies, documenting 59 sites from northern California to Vancouver Island, British Columbia that contain known or potential tsunami deposits. Bibliographical references are provided for all sites included in the database. Cascadia tsunami deposits are usually seen as anomalous sand layers in coastal marsh or lake sediments. The studies cited in the database use numerous criteria based on sedimentary characteristics to distinguish tsunami deposits from sand layers deposited by other processes, such as river flooding and storm surges....


    map background search result map search result map An update of Quaternary faults of central and eastern Oregon Cascadia tsunami deposit database Geologic map and database of the Roseburg 30 x 60 minutequadrangle, Douglas and Coos Counties, Oregon Reconnaissance Geologic Map of the Dixonville 7.5' Quadrangle, Oregon An update of Quaternary faults of central and eastern Oregon Cascadia tsunami deposit database Geologic map and database of the Roseburg 30 x 60 minutequadrangle, Douglas and Coos Counties, Oregon An update of Quaternary faults of central and eastern Oregon An update of Quaternary faults of central and eastern Oregon Cascadia tsunami deposit database Cascadia tsunami deposit database