U.S. Geological Survey (USGS) 2006 Downloadable GIS Data Denver, Colorado U.S. Geological Survey http://pubs.usgs.gov/ds/2006/181/ U.S. Geological Survey Data SeriesDS-181 This geodatabase is a digital reproduction of three legacy USGS oil shale publications--MF-958 (Pitman and Johnson, 1978), MF-1069 (Pitman, 1979), and OC-132 (Pitman and others, 1990). The database consists of 106 feature classes in three feature datasets organized by publication. Each dataset contains isopach contours, isoresource contours, isoresource polygons, and corehole and drillhole locations with resource values for 12 kerogen-rich (R) and kerogen-lean (L) oil shale zones in the Piceance Creek Basin, Colorado. The uppermost zones, Mahogany and R-6, also contain detailed structure files. The zones in descending order are: Mahogany, R-6, L-5, R-5, L-4, R-4, L-3, R-3, L-2, R-2, L-1, and R-1. Increasing energy demand, changing economics, new technology, and geopolitical issues have spurred renewed interest in other energy alternatives such as oil shale, heavy oil, and tar sands. The USGS Energy Resources Program has previously conducted extensive field and geologic research on these commodities and is initiating an effort to inventory and make these important legacy information assets accessible to the public, land managers, and other decision-makers. In addition, the Energy Program is scoping the geologic, technical, economic, and environmental factors controlling the production and use of these energy sources and will provide recommendations for future research in order to meet the energy needs of the United States. 2006 publication date Complete None planned -108.775099 -107.881744 40.173639 39.373661 ArcIMS Metadata Server Theme Codes geoscientificInformation Gateway to the Earth draft 9 28-Jun-2002 Oil shale resources Economic geology none Energy resources Oil shale Oil Resource assessment Earth science Natural resources U.S. Geological Survey USGS Geology Eocene Green River Formation none United States Piceance Creek Basin Colorado Plateau CO none These data are appropriate for regional analysis at a scale of 1:126,720 or less for the Mahogany and R-6 oil shale zones and 1:250,000 or less for the L5, R5, L4, R4, L3, R3, L2, R2, L1, and R1 zones. Ronald C. Johnson U.S. Geological Survey, Central Energy Resources Team Geologist mailing and physical address

U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center

Denver Colorado 80225 USA (303) 236-5546 rcjohnson@usgs.gov http://pubs.usgs.gov/ds/2006/181/downloads/pic_oilshale.jpgJPEGgraphical representation of map Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 The accuracy of the data contained in this geodatabase is a reflection of the accuracy of the data contained in the original publications. Every effort was made to maintain consistency and simply replicate the original published maps in digital form. Pitman, J.K. Johnson, R.C. 1978 map U.S. Geological Survey Miscellaneous Field Studies Map MF-958 U.S. Geological Survey Denver, Colorado 4 maps on 2 sheets http://pubs.er.usgs.gov/pubs/mf/mf958 126,720 paper 1978 publication date Pitman and Johnson (1978) structure, isopach, oil shale resources, data points, Mahogany outcrop Pitman, J.K. 1979 map U.S. Geological Survey Miscellaneous Field Studies Map MF-1069 U.S. Geological Survey Denver, Colorado 4 maps on 2 sheets http://pubs.er.usgs.gov/pubs/mf/mf1069 126,720 paper 1979 publication date Pitman (1979) structure, isopach, oil shale resources, data points Pitman, J.K. Pierce, F.W. Grundy, W.D. 1990 map U.S. Geological Survey Oil and Gas Investigation Chart OC-132 U.S. Geological Survey Denver, Colorado 30 maps on 5 sheets plus 4-page pamphlet http://pubs.er.usgs.gov/pubs/oc/oc132 250,000 paper 1990 publication date Pitman and others (1990) structure, isopach, oil shale resources, data points, revised Mahogany outcrop, saline zone All original hardcopy maps were scanned and cropped to extract the structure, isopach, and isoresource maps for each oil shale zone. Images were then registered and rectified in ArcGIS 9.1. The Mahogany and R-6 oil shale zones were published at a scale of 1:126,720, whereas the L-5 through R-1 zones were published at a scale of 1:250,000. All feature classes were digitized on screen at a scale of approximately 1:20,000. The Mahogany outcrop line was digitized from MF-958 on screen and used as registration for all subsequent feature classes. The resultant feature class, m_outcrop, was used for the MF-958 and MF-1069 feature datasets. This outcrop line was revised in two small areas in the original 1990 publication OC-132 and was therefore edited and saved as m_outcrop_oc132 for use in the OC-132 feature dataset. As digital reproduction was the primary goal, the point and polyline feature classes in all three feature datasets are simply digital replicas of the original hardcopy maps. All feature classes were digitized on screen in ArcGIS 9.1 utilizing several topology rules and attributed accordingly using the domain "Type" when necessary. Polygon feature classes for gallons per ton (gpt) and barrels per acre (bpa) were not present on the original hardcopy maps. These polygon feature classes were created in ArcCatalog by merging the appropriate outcrop line (m_outrcop or m_outrcrop_oc132) with each polyline feature class. Resource polygons were then attributed (BPA_RNG or GPT_RNG) to reflect the values between each contour line in the isoresource polyline feature classes. (Please note: All values for barrels per acre (bpa) are reported in thousands to maintain consistency with the original hardcopy publications). 2006 Tracey J. Mercier U.S. Geological Survey, Central Energy Resources Team Contractor mailing and physical address

U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center

Denver Colorado 80225 USA 303 236 5546 All attributes have been peer-reviewed and reviewed for accuracy by the USGS Central Publications Group. All geodatabase layers contain all values and linework contained on original maps. All linework in the geodatabase was reviewed on-screen and is accurate at its source scale. For layers contained in MF958 and MF1069, the linework is accurate at a scale of 1:126,720 or less. For layers contained in OC132, the linework is accurate at a scale of 1:250,000 or less. Vector Polyconic -108.375000 39.375000 0.000000 0.000000 coordinate pair 0.000128 0.000128 meters D_WGS_1984 WGS_1984 6378137.000000 298.257224 Entities contained in this Overview Description section pertain to geodatabase feature classes and their associated attributes. Entity_Type_Label contains the feature class name and Attribute_Definition defines the items contained within each feature class as well as a brief description of each attribute. Please note that not all entities or their attributes are found in each dataset. For example, *_data_pts can only be found in the MF958 and MF1069 datasets and not in the OC132 dataset. Feature classes are listed as " *_bpa_data_pts " where " * " can be replaced with the layer name, such as "m" for the Mahogany or "l5" for the L5 oil shale zone. There is one domain contained in this geodatabase named "Type." The domain was used to facilitate attributing in ArcGIS of the following items: C = Certain (all polyline feature classes) I = Inferred (approximate or eroded) (all polyline feature classes) CH = Corehole for oil-shale evaluation (all point feature classes) DH = Drillhole for oil and gas (all point feature classes) Please note: All values for all feature classes pertaining to "bpa" or barrels per acre are reported in thousands to maintain consistency with the original publications. Aliases: Barrels per Acre (thousands) -- in "bpa" feature classes Gallons per Ton oil-yield -- in "gpt" feature classes LEACH_% -- in L5 and R5 "isopach" and "gpt" point feature classes (percentage of zone leached) Thickness of zone, in feet -- in "iso" and "isopach" feature classes Elevation in feet, top of zone -- in "struc" feature classes (Mahogany and R-6) Feature classes and attributes: Entity_Type_Label: *_bpa_data_pts Entity_Type_Definition: feature class (data point locations with barrels per acre values in thousands) Attribute_Definition: BLPERAC (barrels per acre oil-yield, in thousands) Attribute_Definition: HOLETYPE (oil and gas drillhole or corehole for oil shale studies) Entity_Type_Label: *_bpa_pl Entity_Type_Definition: feature class (barrels per acre, in thousands, isoresource polylines) Attribute_Definition: BLPERAC (barrels per acre oil-yield, in thousands) Attribute_Definition: LINETYPE (certain or inferred) Entity_Type_Label: *_bpa_pol Entity_Type_Definition: feature class (barrels per acre, in thousands, polygons) Attribute_Definition: BPA_RNG (range of barrels per acre oil-yield, in thousands) Entity_Type_Label: *_gpt_data_pts Entity_Type_Definition: feature class (gallons per ton data points) Attribute_Definition: GLPERTON (gallons per ton oil-yield) Attribute_Definition: HOLETYPE (oil and gas drillhole or corehole for oil shale studies) Attribute_Definition: LEACH_VAL (percentage of zone leached, zones L5 and R5 only) Entity_Type_Label: *_gpt_pl Entity_Type_Definition: feature class (gallons per ton isoresource polylines) Attribute_Definition: GLPERTON (gallons per ton oil-yield) Attribute_Definition: LINETYPE (certain or inferred) Entity_Type_Label: *_gpt_pol Entity_Type_Definition: feature class (gallons per ton polygons) Attribute_Definition: GPT_RNG (range of gallons per ton oil-yield) Entity_Type_Label: *_iso_data_pts Entity_Type_Definition: feature class (isopach point values of oil shale zone) Attribute_Definition: HOLETYPE (oil and gas drillhole or corehole for oil shale studies) Attribute_Definition: THICKFT (thickness of oil shale zone, in feet) Attribute_Definition: LEACH_VAL (percentage of zone leached, zones L5 and R5 only) Entity_Type_Label: *_isopach Entity_Type_Definition: feature class (isopach polylines of oil shale zone) Attribute_Definition: LINETYPE (certain or inferred) Attribute_Definition: THICKFT (thickness of oil shale zone, in feet) Entity_Type_Label: *_ant_syn Entity_Type_Definition: feature class (polylines of anticlines and synclines) Entity_Type_Label: *_data_pts Entity_Type_Definition: feature class (data point locations only -- no values on original map, Mahogany and R-6 zones only) Attribute_Definition: HOLETYPE (oil and gas drillhole or corehole for oil shale studies) Entity_Type_Label: *_faults Entity_Type_Definition: feature class (polylines of faults) Attribute_Definition: LINETYPE (certain or inferred) Entity_Type_Label: m_outcrop Entity_Type_Definition: feature class (polylines of Mahogany outrcrop, MF958 only) Entity_Type_Label: m_outcrop_oc132 Entity_Type_Definition: feature class (revised Mahogany outcrop polylines in OC-132) Entity_Type_Label: *_struc Entity_Type_Definition: feature class (structure contour lines in Mahogany and R-6 zones) Attribute_Definition: LINETYPE (certain or inferred) Attribute_Definition: ELEVFT (elevation of top of oil shale zone above sea level, in feet) Entity_Type_Label: saline_zone Entity_Type_Definition: feature class (salinity zone polygon in L-5 and R-5 zones) none U.S. Geological Survey mailing address

Central Publications Group

Denver Colorado 80225 USA

MS 902

Box 25046

Denver Federal Center

303-236-5486 webmaster@geology.cr.usgs.gov Downloadable data This publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published on this are used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. ESRI Personal Geodatabase 100+ feature classes within three feature datasets http://pubs.usgs.gov/ds/2006/181/ Image Map Service (CO_oilshale1) 9x ArcIMS Image Map Service A web-based interactive mapping system that accesses an ArcIMS Map Service running on certmapper.cr.usgs.gov. http://certmapper.cr.usgs.gov/pubs/servlet/MapViewerBroker?project=oilshale&service=CO_oilshale1&OVMap=CO_overview2 This URL links to a web-based interactive mapping system that accesses an ArcIMS Image Map Service. The mapservice can also be accessed using any custom client that adheres to the protocol specified through ArcXML. None This product can be downloaded individually using any one of the Network_Resource_Name URLs above. Each of these URLs may provide access to various formats of these data. 20060329 Tracey J. Mercier U.S. Geological Survey, Central Energy Resources Team Contractor mailing and physical address

U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center

Denver Colorado 80225 USA datamgt@usgs.gov For inquiries regarding this document, please include the metadata contact person's name, dataset name, and publication series and number. 303 236 5546 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile 200604170824150020060417