U.S. Geological Survey Unpublished Material Map The bedrock geology coverage was developed from the 1972 USGS Geologic Map of Yellowstone National Park. It shows polygons of bedrock formations. Attributes attached to each polygon include a formation code, formation name, formation age, and a generalized formation name. The conversion of bedrock geology information of the park into a digital format enables easy overlay with other layers for analysis and development of other themes. 1972 Date of Publication Complete As Needed -111.1666 -109.8 45.1166 44.1333 Yellowstone National Park area None Geology landscape components bedrock materials None National Park Service, NPS, Department of the Interior, DOI, US Government United States of America, US, USA, North America Yellowstone National Park, YNP, YELL, Greater Yellowstone Area, GYA, Greater Yellowstone Ecosystem, GYE, Park County, Teton County, Fremont County, Gallatin County, Montana, Idaho, Wyoming, Northern Rocky Mountains National Park System Unit Code ThesaurusYELL National Park System Unit Name ThesaurusYellowstone National Park National Park Service Theme Category ThesaurusGeology ISO 19115 Topic CategoryGeoscientific Information None None Spatial Analysis Center - Yellowstone National Park GIS Specialist Mailing Address

Yellowstone Center for Resources

Spatial Analysis Center

P.O. Box 168

Yellowstone National Park Wyoming 82190 USA (307) 344-2246 (307) 344-2211 yell_gis@nps.gov 8:00 a.m. to 4:00 p.m. (Mountain Time) Monday Through Friday Please check web site first: http://www.nps.gov/yell/technical/gis geology.gif geology browse graphic GIF None None None NT-ARC/INFO http://nrdata.nps.gov/yell/yelldata/yell_geology.xml U.S. Geological Survey Unpublished Material Map Map features have been verified visually against the USGS 1972 source. The fidelity of the relationships in the data have not been statistically tested by the Spatial Analysis Center. Attributes were error checked and corrected in 1996 and additional simplified category attributes were added in 9/96. 100% complete The positional accuracy of the geologic areas have been compromised slightly by being converted into a raster layer. Otherwise, boundaries are consistent with USGS 1972 source. National Park Service U.S. Geological Survey NASA 19720101 2nd Map Misc. Geologic Investigations Map 1-711 Reston, VA U.S. Geological Survey 125000 Paper 19720101 Date of Publication Geological Map The polygon boundaries were transferred to 15 minute quads (1:62,500) and then digitized. Geology polygons were transferred from the 1:1250,00 map onto 15 minute topographic maps (1:62,500) and then digitized in SAGIS. Unknown Harvey Fleet USGS Mailing Address

Box 25046, Denver Federal Center

Denver CO 80225-0046 USA (303) 202 4224 harvey_fleet@usgs.gov harvey_fleet@nbs.gov Data were then transferred to GRASS and rasterized. 19970407 Data were transferred to Arc/Info grid format. Attributes were added by Eric Compas, GIS specialist. Unknown Grid projected from NAD 27 to NAD 83. 19970407 Raster Grid Cell 2169 2109 12 .9996 -111 0 500000 0 coordinate pair 50 50 Meters North American Datum of 1983 Geodedic Reference System 80 6378137 298.26 The geology attributes capture the age and type of bedrock formations. The CATEGORY field contains the letter code found on the source 1972 USGS map. The NAME field contains the full description of the formation. The GENERAL field contains a generalized formation name. The AGE field contains the geology age of the formation. COLORNAMES contains the shadeset symbol number of the Arc/Info shadeset COLORNAMES for map display use. Geologic Map of Yellowstone National Park, Miscellaneous Geologic Investigations, Map I-711, USGS, 1972 NPS, Denver Service Center, Reprographic Imaging Center and Technical Information Center DSC Records Manager mailing address

PO Box 25287

Denver Colorado 80225 USA 303-969-2130 303-969-2557 TIC-requests@nps.gov 9:00 a.m. to 5:00 p.m. Monday Through Friday (Mountain Time) IMR-YELL-.E00-CD1 The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics ("GIF" format files) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an NPS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the National Park Service, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. ARCE Version 8.0.1 .e00 .637 CD-ROM ISO 9660 Contact NPS, Denver Service Center, Reprographic Imaging Center and Technical Information Center for a price quote. Complete, print, and submit the CD-ROM Order Form found at http://www.nps.gov/gis/TIC-requests.html to the NPS Denver Service Center Reprographic Imaging Center and Technical Information Center. Use the "Resource_Description" above for the Item No. Contact NPS, Denver Service Center, Reprographic Imaging Center and Technical Information Center for a quote. 20001004 Spatial Analysis Center - Yellowstone National Park GIS Specialist Mailing Address

Yellowstone Center for Resources

Spatial Analysis Center

P.O. Box 168

Yellowstone National Park Wyoming 82190 USA (307) 344-2246 (307) 344-2211 yell_gis@nps.gov 8:00 a.m. to 4:00 p.m. (Mountain Time) Monday Through Friday Please check web site first: http://www.nps.gov/yell/technical/gis FGDC Content Standards For Digital Geospatial Metadata FGDC-STD-001-1998 None None None Unclassified None 20051118 NPS CSDGM Yellowstone National Park Ann Rodman ann_rodman@nps.gov Geology 20040524 Park YELL 34622