THEME: Bedrock Geology, Glacier Bay National Park and Preserve I. IDENTIFICATION INFORMATION 1. Data set name: geol_pol 2. Originator: Interrain Pacific 3. Date: February 17, 1997 4. Edition: n/a 5. Description: This coverage contains bedrock geologic formations within Glacier Bay National Park and Preserve, obtained by USGS mapping projects between 1950 and 1977. 6. Data Set Status: _X_In preparation Anticipated Completion Date_Unknown_ ___Completed and operational ___On going; Update Frequency:____ Data Set Status Comments: 7. Geographic Coverage Description: The geology layer covers all areas within Glacier Bay National Park and Preserve. Please check appropriate USGS 1:250,000 maps: ___Atlin _X_Juneau _X_Mount Fairweather ___Port Alexander ___Skagway ___Sumdum _X_Yakutat 8. West Bounding Coordinate: -137 30 00 W 9. East Bounding Coordinate: -135 00 00 W 10. North Bounding Coordinate: 59 30 00 N 11. South Bounding Coordinate: 58 00 00 N 12. Theme keywords: _X_geomorphology/landforms _X_shoreline _X_other_bedrock geology 13. Access Restrictions: The cost of transferring the dataset will be based on staff time and media costs. 14. Use Restrictions: Data may not be sold. 15. Processing Information: Software used to automate: ARC/INFO Software Version: 7.0.3 Hardware Platform: SUN Operating System used: UNIX File Name: landown File Size: 7 mb Feature Type: ___Point (data point) ___Line (Arc) _X_Polygon ___Grid ___Text ___Other 20. Vector File Format: ___ARCE6 ARC/INFO Export format version 6 ___ARCE7 ARC/INFO Export format 7 ___ARCE ARC/INFO Export other version___ ___ASCII ASCII file, formatted for text attributes, declared format ___DXF9 AUTOCAD Drawing Exchange Format, ver9 ___DXF10 AUTOCAD Drawing Exchange Format,ver 10 ___DXF11 AUTOCAD Drawing Exchange Format, ver 11 ___DLGO US Geological Survey Digital Line Graph-Optional Format ___DLGS US Geological Survey Digital Line Graph-Standard Format ___ATLAS GIS ______ _X_Other ARC/INFO version 7.0.3 21. Spatial Data Media Type (for data with a spatial component not stored in a graphic, mapping or GIS software): n/a Automated: Database: Spreadsheet: geo_att.xls Word processor: Other: Non-Automated: Hard copy textual data: Hard copy map(s): II. DATA QUALITY INFORMATION 1. Attribute Accuracy Explanation: Interrain Pacific has not conducted any formal accuracy assessments on this data layer or the source datasets. 2. Attribute Accuracy: __________% __X__Unknown_____ _X_no accuracy assessment performed on dataset 3. Description of Data Completeness: 4. Minimum Mapping Unit: ____ n/a___ 5. Positional Accuracy Comments: 6. Source Information: David A. Brew, Research Geologist emeritus, Alaskan Section,Geologic Division, U.S Geological Survey 7. Date of Source Data: This information was collected obtained by USGS mapping projects between 1950 and 1977. 8. Scale of Source Data: 1:125,000 9. Data Processing Description: These data were developed onto hard-copy maps at a scale of 1:125,000, scanned and vectorized. This digitally scanned version was then georeferenced by Interrain Pacific based on tic locations included with the source map. Brew, D.A., Unpublished, Reconnaissance bedrock geologic map of Glacier Bay National Park, southeastern Alaska: Prepared for publication in the U.S. Geological Survey Miscellaneous Field Map Series, scale 1:125,000. III. SPATIAL DATA ORGANIZATION INFORMATION 1. Data Structure: ___point (x,y) _X_vector(line >1 x,y) ___raster (grid cell) ___tin (3 dimensional x,y,z) ___Other__________ 2. Raster File Row: 3. Raster File Column: 4. Raster File Vertical: 5. Raster File Number of Bytes per Pixel: 6. Raster file origin_________ IV. SPATIAL REFERENCE INFORMATION 1. Map Projection Name ___Alaska Grid (Modified-Stereographic Conformal for Alaska) ___Alaska E (Alaska Series E) ___Albers Conical Equal Area (Alaska Standard Albers) ___Polar stereographic ___Lambert Azimuthal Equal Area ___Universal Transverse Mercator ___Other (please specify)_______________________ ___State plane (Coordinate System) _X_Geographic Reference System (If geographic please complete coordinate units section) Geographic Coordinate Units: _X_Decimal degrees ___Degree and decimal minutes, ___Degree, minutes, and decimal seconds ___Other______ ___Unknown 2. Map Projection Description: units:__DD__________ datum:__NAD 27__________ spheriod:__CLARK 1866_______ zone:__--___________ standard parallels: northern parallel__________ southern parallel__ ________ central meridian:__ _______ latitude of origin__ ______ false easting:__0__________ false northing:__0_________ V. ENTITY AND ATTRIBUTE INFORMATION 1. Attribute Labels: Geology of Glacier Bay attributes-Version 96.08.27.1220 Attributes required or available for each of the 78 geologic units plus 11 queried versions of the same units plus one "unmarked unit" (total 100) on the Glacier Bay National Park reconnaissance bedrock geologic map. These attributes are the columns on an Excel 4.0 worksheet entitled "geo_att.xls". The rows of that worksheet are the 100 identified types of polygons in the arc/info file. 1.00 INDENTIFIER (Alpha characters=Map symbol) 2.00 ORIGIN (of unit as it now exists, not necessarily an original protolith) 2.10 Magmatic (= Igneous) 2.11 Plutonic 2.1.2 Volcanic 2.20 Metamorphic 2.30 Migmatitic (=mixed metamorphic and magmatic) 2.40 Sedimentary 2.41 Carbonate 2.42 Non-carbonate/clastic 3.00 COMPOSITION (Rock names and proportions) 3.10 For Magmatic 3.11 For Plutonic (Based on Streckeisen, 1973) 3.111 For Felsic 3.112 For Intermediate 3.113 For Mafic 3.12 For Volcanic 3.121 Felsic 3.122 Intermediate 3.123 Mafic 3.20 For Metamorphic 3.21 For Low-grade regional 3.22 For Medium-grade regional 3.23 For High-grade regional 3.24 For Contact 3.25 For Other 3.30 For Migmatitic 3.40 For Sedimentary 3.41 For Carbonate 3.42 For Non-carbonate/clastic 3.421 For Fine-grained clastic 3.4211 Mudstone/siltstone 3.422 For Medium-grained clastic 3.4221 Sandstone 3.4222 Graywacke 3.423 For Coarse-grained clastic 4.00 AGE/AGE RANGE (Based on Geological Society of America, 1984, Decade of North American Geology Geologic Time Scale) 4.10 Cenozoic 4.11 Quaternary 4.111 Holocene 4.112 Pleistocene 4.12 Tertiary 4.121 Pliocene 4.122 Miocene 4.123 Oligocene 4.124 Eocene 4.125 Paleocene 4.20 Mesozoic 4.21 Cretaceous 4.22 Jurassic 4.23 Triassic 4.30 Paleozoic 4.31 Permian 4.311 Late 4.312 Early 4.32 Carboniferous 4.33 Devonian 4.331 Late 4.332 Middle 4.333 Early 4.34 Silurian 4.341 Late 5.00 STRUCTURAL COMPLEXITY 5.10 Un- to Slightly folded and (or) faulted 5.20 Moderatelyly folded and (or) faulted 5.30 Highly folded and (or) faulted 6.00 SPECIAL FEATURES 6.10 Unconsolidated (Surficial deposits other than ice) 6.20 Karst 6.30 Associated mineral deposits Abbreviations used: AM=amphibolite AN=andesiteargill=argillite AU=Au (gold) BA=basalt BI=biotite CG=conglomerate CH=chert Cu=copper DI=diorite GA=garnet GB=gabbro GD=granodiorite granodior=granodiorite GE=greenstone GN=gneiss Gp=Group GR=granite graph=graphitic grnd=grained GS=greenschist HF=hornfels HO=hornblende IL=ilmenite intermed=intermediate K=Cretaceous (age) LS, ls=limestone magm=magmatic magma=magmatic MB=marble meta=metamorphic metagrywckw=metagraywacke MG=magnetite (when used as a prefix) MG=migmatite (when used alone) MM=metamudstone Mo=molybdenum MU=muscovite MW=metagraywacke PH=phyllite PP=porphyry PX=pyroxene QM=quartz monzonite qtz=quartz SC=schist SI=semischist SL=slatesurfic=surficial SY=syenite T=Tertiary (age) TO=tonalite volc=volcanics VMS=volcanogenic massive sulfides w/=with +=together with /=grading into 2. Attribute Definition Source: VI. DISTRIBUTION INFORMATION 1. Distributor: Interrain Pacific 2. Distribution Liability: Interrain Pacific makes no express or implied warranties with respect to the character, fitness, function, accuracy, or capabilities of the information presented or the appropriateness for any users purposes. In no event will Interrain Pacific be liable for any incidental, indirect, special, consequential or other damages suffered by the user of this information or other person. 3. Standard Order Process: Data will be provided on tape or CD-ROM based on written requests. 4. Hardware media type: 8mm tape, CD-ROM 5. File Decompression Technique: None. 6. Decompressed Data Transfer Size: VII. METADATA REFERENCE INFORMATION 1. Metadata Date: February 1997 2. Metadata Contact: Interrain Pacific VIII. CONTACT INFORMATION 1. Primary Contact Person: Interrain Pacific 2. Contact Mailing Address: 1200 NW Front Ave., Suite 470A Portland, OR 97209 3. Contact Voice Telephone: (503) 226-8108 4. Contact Facsimile Telephone: (503) 226-8110 5. Contact Electronic Mail Address: interrain@igc.apc.org