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Analysis of gravity anomalies of two-dimensional faults using Fourier transformsNormal access

Authors: Bijon Sharma and L. P. Geldart
Journal name: Geophysical Prospecting
Issue: Vol 16, No 1, March 1968 pp. 77 - 93
DOI: 10.1111/j.1365-2478.1968.tb01961.x
Organisations: Wiley
Language: English
Info: Article, PDF ( 740.56Kb )

The Fourier transform formula for a two-dimensional fault truncating a horizontal bed at an arbitrary angle of inclination is derived. The amplitude spectrum of the Fourier transform is found to give information about the depth to the top of the upper part of the faulted bed and the inclination of the fault-plane. Under suitable conditions the thickness and the displacement of the bed involved can be obtained. With actual field data, these transforms can be obtained at discrete points by a Fourier analysis of the gravity anomaly. A field example from the Logan fault area near Montreal, Que., Canada, is given.

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