Strike and dip measurement of dike attitudes from the San Marcos, El Campito and Tres Hermanos areas are depicted below on lower hemisphere equal area stereonet plots. Trend and plunge of mean poles to dikes from each area are virtually identical and indicate a strike of ~N30°W and a dip of 75°NE. As discussed earlier, if the dikes were emplaced originally as vertical sheets, this result indicates a consistent SW-directed tilt of 15° through this area consistent with the Butler et al. (1991) regional tilt hypothesis. Many more dike attitudes however must be measured from different areas of the SMDS to confirm this result.

Trend and plunge of mean poles to dikes from each area are virtually identical and indicate a strike of ~N30°W and a dip of 75°NE. As discussed earlier, if the dikes were emplaced originally as vertical sheets, this result indicates a consistent SW-directed tilt of 15° through this area consistent with the Butler et al. (1991) regional tilt hypothesis. Many more dike attitudes however must be measured from different areas of the SMDS to confirm this result.