2002120208252600FALSE20030408133703002003040813370300{76069E33-0C81-41BD-8ECD-9C82913E4AC8}Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800enThis 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 generated from USGS 30-m digital elevations models (DEM), (4) more uniform coverage resulting in more consistent grouping of the ages of active faults, and (5) a new category of "possibly" active faults that share characteristics with known active faults, but have not been studied adequately to assess their activity. The distribution of active faults has not changed substantially from the original Pezzopane, Nakata and Weldon map. Most faults occur in the south-central Basin and Range tectonic province that is located in the backarc portion of the Cascadia subduction margin. These faults occur in zones consisting of numerous short faults with similar rates, ages, and styles of movement. Many active faults strongly correlate with the most active volcanic centers of Oregon, including Newberry Craters and Crater Lake.Update the active fault map and database for central and eastern 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 attempts to rectify a number of shortcomings in the original 1:500,000-scale map of Pezzopane (1993) and to add fault data acquired during subsequent investigations.Ray J. Weldon IIDecember 2002orqfaults_ddvector digital datahttp://darkwing.uoregon.edu/~dogsci/weld/neotec.htmlU.S. Geological Survey Open-File Report 02-301http://geopubs.wr.usgs.gov/open-file/of02-301/U.S. Geological Survey Open-File Report 02-301USGSpublication date19952001CompleteIrregular-122.868134-116.88680345.99998941.998665-122.868134-116.88680341.99866545.999989NonefaultsCentral and Eastern OregonNoneQuaternarynonenoneArcInfo CoverageRay J. Weldon IIDept. of Geological Sciences, University of OregonProfessor of Geologymailing address

Dept. of Geological Sciences, University of Oregon

EugeneOregon97403-1272USA541-346-4584541-346-4692ray@newberry.uoregon.eduSecondary Contact: Patricia A. McCrory U.S. Geological Survey Research Geologist mailing address U.S.Geological Survey 345 Middlefield Road Menlo Park California 94025 USA 650-329-5677 650-329-5163 pmccrory@usgs.govenFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeofficeMenlo ParkCA94025

345 Middlefield Rd Mail Stop 977

USA650-329-4707J. Luke BlairUSGS Menlo ParkGIS Manager, Earthquake Hazards Teamlblair@usgs.gov9-5 PST20030408http://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileVectorSimpleArcFALSE3912FALSEFALSEComplete chain3912SimpleTicFALSE4FALSEFALSEPoint4GCS_North_American_1983North American Datum of 1983Geodetic Reference System 806378137.000000298.257222Decimal degrees0.0000000.000000orqfaults_dd.aatFeature Class3912FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.FNODE#45BinaryInternal node number for the beginning of an arc (from-node).ESRIWhole numbers that are automatically generated.TNODE#45BinaryInternal node number for the end of an arc (to-node).ESRIWhole numbers that are automatically generated.LPOLY#45BinaryInternal node number for the left polygon.ESRIWhole numbers that are automatically generated.RPOLY#45BinaryInternal node number for the right polygon.ESRIWhole numbers that are automatically generated.LENGTH412Float3Length of feature in internal units.ESRIPositive real numbers that are automatically generated.ORQFAULTS_DD#45BinaryInternal feature number.ESRISequential unique whole numbers that are automatically generated.ORQFAULTS_DD-ID45BinaryUser-defined feature number.ESRILENGTH_METERS48Float3FAULT_ID45Binary3COMMENT6416CharacterREFERENCE6416Character3ACTIVITY_CODE45Binary3DIP504Character3FAULT_SYMBOL5016CharacterDIP504CharacterFAULT_SYMBOL5016Character1.5001.500Downloadable Datafile://\\GISMONKEY\mccrory\metadata\new_e00s\orqfaults_ddLocal Area Network0021.500ArcInfo Coverage2002120208252600Faults taken from the digital State Geologic map (digital version of ref#8) were copied from 1:500,000 coverage, all other fault traces were drawn onto 1:100,000 hill shade printouts of the DEM using 1:35,000 to 1:250,000 scale maps and air photos as reference. A literature search was undertaken to update the catalog of active faults in central and eastern Oregon. Those studies published in the past decade are listed in the references (see 'Read-Me' file) and in the ArcInfo database as attributes to the fault traces. The ArcInfo database is linked to the 1:100,000 map sheets where individual fault traces are keyed to the references that provide the line(s) of evidence for their assigned activity. To determine which faults were redrawn and which were simply compiled from a pre-existing digital database, one must also access the ArcInfo database, select the fault, and read its attributes. Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800orqfaults_dd-122.868134-116.88680345.99998941.9986651-122.868134-116.88680345.99998941.9986651ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetGCS_North_American_19833912420030408