Figure 6.

Major continuity direction experimental and modeled semi-variograms for the Freiberg gneiss middle-section aperture field corresponding to 135° azimuth

The cyclicity observed beyond the sill is possibly indicative of channeling phenomena within the aperture field. The colored lines represent continuous semi-variogram models

The blue model better represents the shorter lags’ semi-variance but underestimates it at longer lags. The orange model overestimates the shorter lags’ semi-variance but does a better job at modeling the longer separation distances. The green model is a nested spherical model which represents the experimental semi-variogram much more accurately than the other two simple models shown in both short and long lags.