don, motions you mention are either incorrect or not clear enough. "moving" means you are talking about strain/displacements, not stress, which is different. The Imperial fault is right-lateral. It strikes NNW. Diections of motion only have meaning if they are in reference to something. So, the east side moves SSE relative to the west side. Or, the west side moves NNW relative to the east side. "portion of Baja that is associated with rift zone" is unclear. Rift zone on what scale? There is active normal faulting along Gulf side of Baja, so relative to mainland Mexico this would give a more westerly component of motion to Baja. But, zooming into Imperial fault: it is connected to other faults (like San Andreas) by "pull-aparts". Draw the fault pattern as segments on a piece of paper, where each segment is a little bit to the right of the adjoining one. Cut out the faults with scissors. Try and slip them to the right. You will see that space opens up at the pull-aparts: this is extension. The M3s are big enought to have focal mechanisms, which will show whether these are strike-slip or normal fault events. Chris