Euler's homogeneity equation has been used to develop a new technique to in
terpret the gravity anomalies over some simple geometrical sources, namely
a finite horizontal line/vertical line, a finite vertical ribbon, a semicir
cular dome/basin and an isosceles triangle approximating an anticline/syncl
ine. A linear over-determined system of equations has been solved to comput
e the depth, the horizontal location and the structural index, all treated
as free parameters. The concept of a variable structural index provides bet
ter depth estimates and helps to identify the source geometry. Nomograms ha
ve been prepared to compute an additional model parameter, namely the horiz
ontal/vertical extent of a line, the vertical extent of a ribbon and the ra
dius of a dome/basin. The efficacy of the proposed method has been evaluate
d using two real field examples.