Examine3D can visualize seismic data (event locations, event density) but it does not do seismic analyses, as in dynamic or pseudostatic seismic loads. It uses a 3D boundary element analysis technique, utilizing a single elastic material model.
For more information on the use of Examine3D for the visualization of seismic data, see Examine3D Visualization and Meshing - Thesis.
The Eden utility has a help button and read a standards Examine3D pts file (documented in the manual). The Eden utility is in the Utilities menu of the Examine3D start menu. Look at the .DAT file documentation in the Reference Manual (pg 111) for a description of how to enter seismic data points.