Ralph A. Haugerud Rowland W. Tabor 2009 vector digital data U.S. Geological Survey Scientific Investigations Map SIM 2940 Menlo Park, CA U.S. Geological Survey http://pubs.usgs.gov/sim/2940/ This digital database for the Geologic Map of the North Cascade Range (USGS SIM-2940) consists of several ArcInfo coverages (individual vector datasets) along with a TIFF-format color shaded-relief image (geology on topology) and metadata. Together with the geologic pamphlet, the database provides georeferenced information on the geologic structure and stratigraphy of the North Cascade Range. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The spatial resolution (scale) of the database is 1:200,000 or less. This database depicts the distribution of geologic materials at a regional (1:200,000) scale. The report is intended to provide geologic information for the regional study of materials properties, earthquake shaking, landslide hazards, mineral resource potential, seismic velocity, and earthquake faults. In addition, the report contains information and interpretations about the regional geologic history and framework. The regional scale of this report does not provide sufficient detail for site-development purposes. 2009 2009 Complete As needed -122.0 -120.0 49.0 47.0 none Alder Creek stock alluvium Alma Creek pluton alpine glaciation Ashnola gabbro Bald Mountain batholith Barlow Pass Volcanics Barron stock basalt of Dalles Ridge Bearcat Ridge pluton Beckler Peak stock bedrock geology Bell Pass melange Bench Lake pluton Black Peak batholith Button Creek stock Cascade Magmatic Arc Cascade Pass dike Cascade Pass Family Cascade River Schist Cathedral batholith Challis volcanic arc Chancellor stock Chaval pluton Chelan block Chelan Complex Chelan Mountains terrane Chewack River Gneiss Chilliwack Composite Batholith Chilliwack Group Chiwaukum Schist Chumstick Formation Clark Mountain stock Columbia River Basalt Group Conglomerate of Bald Mountain Cooper Mountain batholith Cordilleran Ice Sheet Cultus Formaion Cyclone Lake pluton Darrington Phyllite Darrington-Devils Mountain Fault Zone Dirty Face pluton Downey Creek pluton Downey Creek sill complex drainage derangement drainage diversion Duncan Hill pluton eastern mélange belt Easton Metamorphic Suite Easton terrane Eldorado Orthogneiss Elijah Ridge Schist Ellensburg Formation Entiat Fault Entiat pluton erosional landscape Evans Creek Stade of the Fraser Glaciation Excelsior nappe Excelsior pluton extensional faulting fault offset Fawn Peak stock Fidalgo Complex Fifes Peak Formation flood basalt Fraser glaciation Gamma Ridge caldera geologic history geologic structures geology glacial geology glacial outburst floods Glacier Extensional Fault Glacier Peak Golden Horn batholith Grande Ronde Basalt granodioritic orthogneiss granodioritic plutons Grassy Point stock Hannegan Volcanics Helena-Haystack mélange Hidden Lake stock High Pass pluton Hozomeen Group Hozomeen terrane Index Family Ingalls Tectonic Complex Ingalls terrane Jordan Lakes pluton Kushan Caldera Ladner Group lahars Lake Creek Gneiss landslide deposits Leecher metamorphics Loess Lookout Mountain Formation Lost Peak stock Magic Mountain Gneiss Marblemount pluton Meadow Mountain stock melange metamorphic rocks metamorphic rocks of McClure Mountain metamorphism Methow block Midnight Peak Formation Monument Peak stock Mount Baker volcanic center Mount Stuart batholith Mt. Pilchuck stock Naches Formation Napeequa Schist nappes Nason Ridge Migmatitic Gneiss Nason terrane Newby Group Nooksack Formation North Cascades Northwest Cascade System Ohanapecosh episode Ohanapecosh Formation Okanogan block ophiolite orogenic deposits orthogneiss orthogneiss of Haystack Creek orthogneiss of Haystack Creek orthogneiss of Marble Creek orthogneiss of Marble Creek orthogneiss of Mount Triumph Osceola mudflow outwash deposits Pasayten dike Pasayten Fault Pasayten Group phyllite and schist of Little Jack Mountain Pilchuck stock Pipestone Canyon Formation plate tectonics Puget Group Puget lobe of the Cordilleran Ice Sheet Quartz Mountain stock radiometric ages Raging River Formation Railroad Creek pluton regional metamorphism Remmel batholith Riddle Peaks pluton Rock Creek stock rock samples Roslyn Formation Ross Lake Fault System Ross Lake Fault Zone Ruby Creek Heterogeneous Plutonic Belt Saddle Mountains Basalts San Juan Islands schist of DeRoux Creek Semischist anf phyllite of Mount Josephine Settler Schist Shuksan Greenschist Shuksan Nappe Silver Pass Volcanic Member of the Swauk Formation Skagit Gneiss Skagit Gneiss Complex Skymo Complex Slate of Rinker Ridge Sloan Creek pluton Snoqualmie batholith Snoqualmie Family Spanish Camp Gneiss stitching plutons Straight Creek Fault strike-slip faulting subduction Sulphur Mountain pluton surficial geology Swakane Biotite Gneiss Swakane terrane Swauk Formation talus deposits Tenpeak pluton terrane overlap units terranes Texas Creek stock Thorp Gravel Three Fools sequence till tonalite gneiss of Hicks Butte tonalite plutons tonalitic gneiss of Bench Lake tonalitic orthogneiss transtensional deposits trondhjemite of Doe Mountain Twin Sisters Dunite Twisp River Schist ultramafic rocks Vashon stade of the Fraser glaciation Vedder Complex Ventura Member of Midnight Peak Formation Vinegar Fault Virginian Ridge Formation Volcanic rocks of Big Bosom Buttes Volcanic rocks of Mount Rahm Wanapum Basalt Wells Creek Volcanic Member Wenatchee block Wenatchee Formation Wenatchee Ridge pluton Western mélange belt Winthrop Formation Yakima Basalt Subgroup Yellow Aster Complex Yockey Creek stock none Columbia River Methow River North Cascade Mountains Pacific Northwest Sauk River Skagit River Skykomish River Snoqualmie River Stillaguamish River Washington White River Yakima River Whatcom County Skagit County Snohomish County King County Pierce County Okanogan County Chelan County Kittitas County None SPATIAL RESOLUTION- Uses of this digital geologic map should not violate the spatial resolution of the data. The digital form of the data removes the constraint imposed by the scale of a paper map. That this database was compiled from maps edited for a scale of 1:100,000 which means that the database carries information at higher precision than the 1:200,000 scale of the paper map. However, plotting at scales larger than 1:100,000 will not yield greater real detail, although it may reveal fine- scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the 1:100,000-scale resolution of these data. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 Use of 1:100,000-scale source materials dictates that locational accuracy is no better than about 100 meters. In places, due to the nature of geologic mapping in rugged, heavily forested terrain, some geologic features probably have positional errors significantly greater than 100 meters. Minor shifts of feature coordinates during GIS processing have led to slight differences (mostly less than few meters in ground coordinates) in the coordinates of equivalent features in the published map image and coverages NCG and NCGEOLMAP. These differences are not significant. Tabor, R.W. Waitt, R.B. Frizzell, V.A., Jr. Swanson, D.A. Byerly, G.R. Bentley, R.D. 1982 U.S. Geological Survey Miscellaneous Investigations Series Map I-1311 100000 Digital files Tabor and others, 1982 geologic features Tabor, R.W. Frizzell, V.A., Jr. Whetten, J.T. Waitt, R.B. Swanson, D.A. Byerly, G.R. Booth, D.B. Hetherington, M.J. Zartman, R.E. 1987 U.S. Geological Survey Geologic Investigations Series I-1661 100000 Digital files Tabor and others (1987) geologic features Tabor, R.W. Frizzell, V.A., Jr. Booth, D.B. Waitt, R.B. Whetten, J.T. Zartman, R.E. 1993 U.S. Geological Survey Geologic Investigations Series I-1963 100000 Digital files Tabor and others (1993) geologic features Tabor, R.W. Frizzell, V.A., Jr. Booth, D.B. Waitt, R.B. 2000 U.S. Geological Survey Geologic Investigations Series I-2538 100000 Digital files Tabor and others (2000) geologic features Tabor, R.W. Booth, D.B. Vance, J.A. Ford, A.B. 2002 U.S. Geological Survey Geologic Investigations Series I-2592 100000 Digital files Tabor and others (2002) Geologic features Tabor, R.W. Haugerud, R.A. Hildreth, W. Brown, E.H. 2003 U.S. Geological Survey Geologic Investigations Series Map I-2660 100000 Digital files Tabor and others (2003) geologic features Haugerud, R.A. Tabor, R.W. unpublished 100000 Digital files Haugerud and others (unpublished a) geologic features Haugerud, R.A. Mahoney, J.B. Tabor, R.W. unpublished 100000 Digital files Haugerud and others (unpublished b) geologic features Tabor, R.W., compiler unpublished 100000 Digital files Tabor (unpublished) geologic features Dragovich, J.D. Norman, D.K. Haugerud, R.A. Miller, R.B. 1997 Washington Division of Geology and Earth Resources Geologic Map GM-46 GM-46 24000 paper map Dragovich and others (1997) geologic features The authors compiled geologic-map source databases into a single database using Arc Macro Language (AML) scripts written by Haugerud. These scripts combined the source databases, correlated and simplified their units, and removed polygons of surficial deposits that are too small to show at 1:200,000 compilation scale. Tabor and Haugerud further edited this digital compilation, correcting a few minor drafting errors that were present in the source databases, adjusting some mismatches at source-map boundaries, and eliminating some map-unit polygons too small to show at 1:200,000 scale. This simplified 1:200,000 compilation is ArcInfo coverage NCG. For cartographic purposes, the network coverage ncg was used to produce a coverage of map-unit polygons and a fault coverage. K. Nimz made further minor edits to these derivative coverages in the course of producing the published geologic map image. Haugerud recombined the edited derivative coverages and corrected further minor drafting and compilation errors to produce network coverage NCGEOLMAP. Tabor digitized most of the points in NCGROCKSAMP from scale-stable original sample location maps at 1:100,000 scale. He digitized the locations of samples in the Cascade Pass area and in the Glacier Peak 15-minute quadrangle from scale-stable compilations at 1:24,000 and 1:62,500 scale, respectively. Tabor and Haugerud compiled the shaded-relief base for this 1:200,000 map from a 20-meter subsample of U.S.G.S 10 meter DEMs. The DEMs, which are a standard USGS product derived from existing 1;24,000-scale topographic maps, are available at http://wagda.lib.washington.edu/data/type/drg/. Drainage and cultural features were extracted from U.S.G.S. 1:100,000-scale digital line graphs, available at: http://edcftp.cr.usgs.gov/pub/data/DLG/100K/. The authors digitized additional trails by inspection of 1:24,000-scale topographic maps and U.S. Forest Service maps. Most geographic and cultural names derive from U.S. Geological Survey databases which may be found at http://geonames.usgs.gov/domestic/download_data.htm. K. Nimz assisted with final edits to the base-map data. Universal Transverse Mercator 10 0.999600 -123.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000001 0.000001 meters North American Datum of 1927 Clarke 1866 6378206.400000 294.978698 ncgeolmap.e00 ArcInfo export file of network coverage of the geology of the North Cascade Range, Washington, at 1:200,000 scale. 35,591 arcs, 12,988 polygons. Located in Geology directory. None ncg.e00 ArcInfo export file of initial compilation dataset; network coverage. 49,914 arcs, 19,132 polygons. Located in Geology directory. None ncgrocksamp.e00 ArcInfo export file of point coverage of sample locations, sample numbers, and geologic map units for rock samples archived with North Cascades National Park in Marblemount, Washington. 2,636 points. Located in Geology directory. None ncgculines.e00 ArcInfo export file of roads and trails. 11,211 arcs. Located in Base directory. None ncgdrain.e00 ArcInfo export file of drainage network including man-made irrigation works, with river, stream, and glacier names in annotation layer (anno.water). 15,112 arcs, 2,662 annotation entries. Located in Base directory. None ncgpwbound.e00 ArcInfo export file of boundaries of Park and Wilderness Areas. 72 arcs. Located in Base directory. None ncgmapbound.e00 ArcInfo export file of the boundaries of 8 30- x 60-minute quadrangles used in compilation. 19 arcs. Located in Base directory. None ncgcobound.e00 ArcInfo export file of boundaries of Washington counties in the map area. 25 arcs. Located in Base directory. None ncgpkpts.e00 ArcInfo export file of summits of mountains named on map. 765 points. Located in Base directory. None ncgculanno.e00 ArcInfo export file of annotation for all cultural features on map. 1,252 annotation entries. Located in Base directory. None The digital database package contains 10 vector datasets (ESRI ArcInfo coverages) presented in .e00-file format. Each coverage contains formal XML-format metadata with complete entity-and-attribute information, including extensive definitions of feature-attribute values. Also included are a brief readme file and a large (255 MB) image in TIFF format that combines geologic map-unit colors with a shaded-relief image of topography. Users of the database package may wish to download the technical and (or) nontechnical pamphlet (sim2940_technical.pdf or sim2940_nontechnical.pdf) for the contained Description of Map Units. none USGS Information Services mailing address

Box 25286

Denver Federal Center

Denver Colorado 80225-0046 USA 303-202-4200 303-202-4695 infoservices@usgs.gov Downloadable Data None. Use these data at your own risk ARCE 78 MB http://pubs.usgs.gov/sim/2940/sim2940_database.zip None 20091218 Ralph Haugerud mailing address

U.S. Geological Survey

c/o Dept Earth & Space Sciences

University of Washington

Seattle Washington 98195 USA 206-713-7453 rhaugerud@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile