APPENDIX B. GRAVITY ANOMALY CONTOUR MAPS

      B1   Original data . . . . . . . . . . . . . . . . 228

      B2   Low-pass, 0 to 1/2 Nyquist. . . . . . . . . . 229
      B3   Low-pass, 0 to 1/4 Nyquist. . . . . . . . . . 230
      B4   Low-pass, 0 to 1/8 Nyquist. . . . . . . . . . 231
      B5   Low-pass, 0 to 1/16 Nyquist . . . . . . . . . 232

      B6   Band-pass, 1/16 to 1/2 Nyquist. . . . . . . . 233
      B7   Band-pass, 1/16 to 1/4 Nyquist. . . . . . . . 234
      B8   Band-pass, 1/8 to 1/2 Nyquist . . . . . . . . 235

      B9   Upward continuation to 2.5 km . . . . . . . . 236
      B10  Upward Continuation to 5 km . . . . . . . . . 237
      B11  Upward continuation to 10 km. . . . . . . . . 238
      B12  Upward continuation to 25 km. . . . . . . . . 239

      B13  Downward continuation 2.5 km of Band-pass 
           low-pass 0 to 1/2 Nyquist . . . . . . . . . . 240
      B14  Downward continuation 5 km of Band-pass 
           low-pass 0 to 1/2 Nyquist . . . . . . . . . . 241

      B15  Downward continuation 2.5 km of Band-pass 
           low-pass 0 to 1/4 Nyquist . . . . . . . . . . 242
      B16  Downward continuation 5 km of Band-pass 
           low-pass 0 to 1/4 Nyquist . . . . . . . . . . 243
      B17  Downward continuation 10 km of Band-pass 
           low-pass 0 to 1/4 Nyquist . . . . . . . . . . 244

      B18  Downward continuation 5 km of Band-pass 
           1/16 to 1/2 Nyquist . . . . . . . . . . . . . 245

      B19  First horizontal derivative in X direction. . 246

      B20  First vertical derivative of Upward
           continuation 2.5 km . . . . . . . . . . . . . 247
      B21  Second vertical derivative of Upward
           continuation 2.5 km . . . . . . . . . . . . . 248
      B22  First vertical derivative of Band-pass
           0 to 1/2 Nyquist. . . . . . . . . . . . . . . 249
      B23  Second vertical derivative of Band-pass
           0 to 1/2 Nyquist. . . . . . . . . . . . . . . 250
      B24  First horizontal derivative in X direction 
           of Upward continuation 2.5 km . . . . . . . . 251
      B25  First horizontal derivative in Y direction 
           of Upward continuation 2.5 km . . . . . . . . 252

      B26  First horizontal derivative in X direction 
           of Band-pass 0 to 1/2 Nyquist . . . . . . . . 253
      B27  First horizontal derivative in Y direction 
           of Band-pass 0 to 1/2 Nyquist . . . . . . . . 254

      B28  Second horizontal derivative in X direction 
           of Upward continuation 2.5 km . . . . . . . . 255
      B29  Second horizontal derivative in Y direction 
           of Upward continuation 2.5 km . . . . . . . . 256
      B30  Second horizontal derivative in X direction 
           of Band-pass 0 to 1/2 Nyquist . . . . . . . . 257
      B31  Second horizontal derivative in Y direction 
           of Band-pass 0 to 1/2 Nyquist . . . . . . . . 258

      B32  Horizontal derivative in the X and Y dirction
           of Upward continuation 2.5 km . . . . . . . . 259
      B33  Horizontal derivative in the X and Y dirction
           of Band-pass 0 to 1/2 Nyquist . . . . . . . . 260

      B34  Strike-pass, 80 to 110 degrees. . . . . . . . 261
      B35  Strike-pass, 125 to 145 degrees . . . . . . . 262