Entry_ID: (required) Entry_Title: National Geochemical Atlas: The Geochemical Landscape of the Conterminous United States Derived from Stream Sediment and other Solid Sample Media Analyzed by the National Uranium Resource Evaluation (NURE) Program Group: Data_Set_Citation Originator(s): Jeffrey N. Grossman Title: National Geochemical Atlas: The Geochemical Landscape of the Conterminous United States Derived from Stream Sediment and other Solid Sample Media Analyzed by the National Uranium Resource Evaluation (NURE) Program Publication: U.S. Geological Survey Open-File Report Publication_Date: 1998 Publication_Place: Reston, VA Publisher: U.S. Geological Survey Edition: 3.01 Data_Presentation_Form: raster digital data URL: End_Group Keyword: igneous Keyword: pluto Keyword: geochemistry Keyword: 1999 Group: Temporal_Coverage Start_date: 1964 Stop_date: 1995 End_Group Data_Set_Progress: Complete Group: Spatial_Coverage Southernmost_Latitude: 19.003 Northernmost_Latitude: 70.0 Westernmost_Longitude: -179.1 Easternmost_Longitude: -67.764 End_Group Location: United States Group: Data_Resolution End_Group Access_Constraints: None Use_Constraints: The U.S. Geological Survey makes no warranties related to the accuracy of the data and users are required to determine the suitability of use for any particular purpose. Originating_Center: (required) Group: Data_Center Data_Center_Name: USGS Dataset_ID: nure.zip Group: Data_Center_Contact Last_name: Grossman First_name: Jeff Email: jgrossman@usgs.gov Phone: 703-648-6184 Group: Address 954 National Center Reston, VA 20192 USA End_Group End_Group End_Group Storage_Medium: ArcView 3.1 Windows NT 4.0 (SP3) Group: Reference End_Group Group: Summary To make NURE Geochemical data available on the Internet. This CD presents maps derived from a subset of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) data. Approxiamately 260,000 samples were analyzed in the continental U.S. and consisted of solid samples, including stream, lake, pond, spring, and playa sediments, and soils. Data for eleven elements were analyzed and included on this release of the National Geochemical Atlas CD: Na, Ti, Fe, Cu, Zn, As, Ce, Hf, Pb, Th, and U. The National Uranium Resource Evaluation (NURE) program of the Department of Energy (DOE) collected a vast amount of chemical data on sediment, soil, and water samples from the United States in the late 1970's and early 1980's. This element of the NURE program was known as the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR). The NURE HSSR data have long been available to the public in a variety of formats, ranging from the original paper reports produced by the DOE (see Averett, 1984), to comprehensive digital releases on CD-ROM by the U.S. Geological Survey in the last few years (Hoffman and Buttleman, 1994; 1996), to digital releases on the Internet of reformatted and cleaned data (Smith, 1998). While these publications remain the best sources of the complete, primary data, and are accompanied by documentation of the sampling protocols, sample characteristics, and analytical methods, they are difficult to use for geochemical research, especially when the study area covers a wide area of the United States. This publication is intended to allow the rapid visualization of the geochemical landscape of the United States using the NURE HSSR data. Here, the user is relieved of the responsibility of selecting and processing the raw data; this was done in the preparation of the CD. A powerful geographic-information system (GIS) tool, the ArcView program of Environmental Systems Research Institute, Inc. (ESRI), is provided to allow one to probe and manipulate the processed NURE data. Within the ArcView environment, multiple presentations of the NURE are provided, ranging from color-coded point maps, to bitmap-images on a national scale, to interpreted maps based on geologic and hydrologic units. Because the NURE HSSR data have been processed by the author for the production of this CD, the user must use a degree of caution in interpreting the maps produced here, and in using the data files found on the disc. One must understand the methods used in deriving the data on this CD in order to judge the significance of any particular map or data feature. Fortunately, the raw data used in the production of this CD are available in digital form (Hoffman and Buttleman, 1996), for examination by sophisticated users. End_Group Group: DIF_Author Last_name: Kress First_name: Tom Email: thkress@usgs.gov Phone: 703-648-6184 Group: Address 12201 Sunrise Valley Dr. Reston, VA 20192 USA End_Group End_Group DIF_Revision_Date: 19990226 Science_Review_Date: