TERRACING POTENTIAL FIELD DATA

Baranov., V.,

1957. A new method for the inte gravimetric anomalies. Geophysics 22, 359-383. Blakely, R.J.,

1995. Potential Theory in Gravit University Press. Blakely. R. J., and

W., 1986, Locat gravity anomalies: Geophysics 51, 1494-1498.

Cordell, L., and McCafferty,

A.E., 1989, A mapping with potential field data: Geophysics 54

Mitasova, H., and Jarosalav, H.,

1993. Int Tension: II. Application to Terrain Mode Mathematical Geology 25 (6) 657-669. Philips, J.D.,

1992. TERRACE: A terracing p programs, and VAX Command Procedure implementations. Department of the interior, U

5. FIGUR Function values at data point x at the n+1st maximum or minimum of the nth iteration v Applied and Environmental Geophysics thanked for permission to use the gravity data e interpretation of aeromagnetic maps: pseudo-

9-383. Gravity and Magnetic Applications. Cambridge Locating edges of source bodies for magnetic or

9, A terracing operator for physical property sics 54 (5) 621-634.

3. Interpolation by Regularized Spline with Modeling and Surface Geometry Analysis, cing procedure for gridded data, with Fortran edure, Unix C-Shell, and DOS batch file ior, U.S. geological survey open file report 92- GURE 1 n+1st iteration are kept the same or set to the ion values of the function within the narrow International Multidisciplinary Scientific GeoConfe window w (centered on x ) on the basis of the and McCafferty,

1989). FIGUR a) Gravity data from the three rectangular bod is 200x200 units in size and the depth of the body and 15 units for the other bodies. The function is plotted as a thin black line, while th plotted as a thick black line. The density contra b) Gravity data terraced using the Laplacian used. c) Gravity data terraced using the profile curva FIGUR a) Gravity data from a portion of the Witwate

300x300km in size, and the gravity values ran (blue). b) Gravity data terraced using the Laplacian used. c) Gravity data terraced using the profile curva of the direction of the curvature (from Cordell GURE 2 r bodies whose outlines are shown. The image of the bodies is 25 units for the northernmost The zero contour of the Laplacian derivative hile the zero contour of the profile curvature is contrasts used were

0.1, -0.1, and

0.05g.cm-3. acian derivative function. 20 Iterations were curvature. 20 Iterations were used. GURE 3 twatersrand basin, South Africa. The image is es range from -80 mGals (red) to -180 mGals acian derivative function. 20 Iterations were curvature. 20 Iterations were used.