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Southeastern Colorado [A1047]

Survey Size: 23,500 miles Flight Lines: East-West, ½-mile spacing Tie Lines: North-South, 10-mile spacing Elevation: 6,000 feet barometric Instrumentation: Geometrics G-803 magnetometer, 0.1 gamma Date Flown: April to June, 1984 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional) Profiles, on

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Southeast Carlin Trend Survey, (NV) [A1046]

Survey Size: 24,285 line miles Flight Lines: Northeast-southwest, ⅛-mile (200 m) Tie Lines: ½-mile, northwest-southeast Elevation: Approximately 500 feet, draped Date Flown: 3/15/97 to 6/12/97 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional) Profiles, on paper (optional) CD/DVD with Flight

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Serpentine Plug Play, (TX) [A1043]

Mileage: North block: (not available) Central block: 3,514 line miles South block: 2,340 line miles Survey Size: 11,218 miles Flight Lines: NNE-SSW, ¼-mile spacing Tie Lines: WNW-ESE, 5-mile spacing Elevation: 500 feet above ground level Instrumentation: Optically pumped, Cesium-vapor magnetometer, ¼-second sampling Date Flown: February, 1986 Data Provided: Total Magnetic Intensity (IRGF removed) contour map

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Rough Creek Graben, (KY) [A1042]

Survey Size: 4,225 miles Flight Lines: East-West, 1-mile spacing Tie Lines: North-South, 1-mile spacing Elevation: 1,000 feet barometric with drape over higher elevations Instrumentation: Geometrics G-813 magnetometer, 0.05 gamma Date Flown: October, 1984 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient

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Rome Trough, (WV) [A1041]

Survey Size: 24,500 miles Flight Lines: Northwest-Southeast, 4,500 feet spacing Tie Lines: Northeast-Southwest, 5 miles spacing Elevation: 3,000 feet barometric Instrumentation: Scintrex cesium vapor magnetometer Date Flown: October 1991 to February 1992 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional) Profiles,

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