Duval, Joseph S. Webring, Michael W. Hildenbrand, Thomas G. Pierce, Herbert A. Mars, John Carlisle Daniels, David L. 2002 map, raster digital data, profile U.S. Geological Survey Open-File Report 02-117 Reston, Virginia U.S. Geological Survey https://pubs.usgs.gov/of/2002/of02-117/ This publication presents maps and related databases of aerial survey data in Berrien County, Michigan. The original data were collected by Fugro Airborne Surveys Corporation for the U.S. Geological Survey on October 22-25, 2000. The U.S. Geological Survey processed these data to convert gamma-ray count rate data to concentration values for potassium, uranium, and thorium. The magnetic and electromagnetic data were processed to remove noise associated with power lines and other man-made objects. The processed data were used to calculate grids with 50 m grid cells. The grids were used to produce maps that can be viewed with a free viewer that is provided with the data. In addition to images of the data, the maps include other information such as roads, and streams. The flightline data are included in a database that can be examined using the viewing software and the user can plot profiles and can export the data in several formats if desired. The data and viewing software are installed via installation programs provided on a CD-ROM. The data and software require about 650 Mb of space on a hard disk. Mapping aquifers in glacial terranes. 2002 publication date Complete As needed -86.6 -86.25 42.1 41.8 General glossary for mineral resources spatial data delimited text Geosoft grid format GeoTIFF USGS Thesaurus aeromagnetic surveying aeroradiometric surveying electromagnetic surveying geophysics geospatial datasets magnetic field (earth) multispectral imaging resistivity rocks and deposits Augmented FIPS 10-4 and FIPS 6-4 f26021 = Berrien None None Herbert A Pierce USGS ER NE GD Geophysicist mailing address

12201 Sunrise Valley Drive$Mail Stop 926A

Reston VA 20192-0002 USA 703-648-6493 703-648-6953 hpierce@usgs.gov https://pubs.usgs.gov/of/2002/of02-117/data/BerrienCountyMap8.jpg Preliminary surficial geologic map of Berrien county, Michigan, 1710x2806 pixels, 3.5 megabytes JPEG The concentration values are estimated to be no better than about plus or minus 30 percent except for areas of very low concentrations. Those areas are suspected to have water at or very near the surface and the measured concentrations do not represent the rocks or soils. The magnetic data were measured using a cesium magnetometer and have an accuracy on the order of 1 nanoTesla or less. The depths and resistivities calculated using the electromagnetic data are interpreted values and cannot be assigned an accuracy. This aerial survey covers part of southern Berrien County, Michigan. Fugro Airborne Surveys Corporation 200102 document Contractor Report 613 Mississauga, Ontario, Canada Fugro Airborne Surveys Corporation 1 Report with a CD containing the data CD-ROM 200102 publication date Fugro, 613 This publication describes the survey data collection and processing procedures. The original survey data were processed to convert gamma-ray count rate data to concentration values and the magnetic and electromagnetic data were processed to eliminate noise caused by power lines and other man-made objects. Fugro, 613 2001 Joseph S. Duval U.S. Geological Survey Geophysicist mailing address

12201 Sunrise Valley Drive Mail Stop 954

Reston VA 20192 USA (703) 648-6106 (703) 648-6383 jduval@usgs.gov email preferred Raster Grid Cell 324 505 1 Universal Transverse Mercator 16 0.9996 -87 0.0 500000 0.0 row and column 50 50 meters NAD27 Clark 1866 6378206.4 0.082271854 The following list provides the file names and brief descriptions of the databases provided. These databases are located in the data directory as a compressed archive. AreaA.gdb: flightline data for the Berrien County study area NURE.gdb: flightline data for the regional gamma-ray data NUREmag.gdb: flightline data for the regional magnetic data DeculturedMag.gdb: processed magnetic data for the Berrien County study area Also included in the data directory are the ASCII XYZ files, the GRD files, and a georeferenced TIFF file, all compressed. https://pubs.usgs.gov/of/2002/of02-117/archive/htmldir.zip USGS ESIC-Open-File Report Sales mailing address

Mail Stop 517 U.S. Geological Survey Box 25286, Building 810 Denver Federal Center

Denver CO 80225-0286 USA (303) 202-4210 (303) 236-4031 USGS Open-File Report 02-117 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Geosoft XYZ archive Electromagnetic and radiometric measurements unzip 29 megabytes https://pubs.usgs.gov/of/2002/of02-117/data/ASCII_xyz.zip Geosoft database (.gdb) format Electromagnetic and radiometric measurements unzip 98 megabytes https://pubs.usgs.gov/of/2002/of02-117/data/GDB_files.zip Geosoft grid (.grd) format Gridded electromagnetic, radiometric, and spectral observations, one earth characteristic per grid unzip 40 megabytes https://pubs.usgs.gov/of/2002/of02-117/data/GRD_files.zip GeoTiff 6 Scanned preliminary surficial geologic map unzip 8.9 megabytes https://pubs.usgs.gov/of/2002/of02-117/data/RegGeolTif.zip none Bundled software requires an IBM-compatible PC with a Pentium processor or better with 64 Mbytes of RAM and enough disk space to accomodate the files (about 650 Mb). 20090825 Peter N Schweitzer USGS ER GD Geologist mailing address

12201 Sunrise Valley Drive

Reston VA 20192-0002 USA 703-648-6533 703-648-6252 pschweitzer@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998