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Hi Allan, Let me answer at least one of your questions (because I really don`t know Ricardo Caputo`s e-mail). For performig statistical and orientation operations with lineaments I use Rockworks commercial software from Rockware (you can use a .dxf file and automatically compute bearing, azimuth, and length of lineaments, perform length-azimuth correlograms...etc). You can also display faults as solid disks or circles and automatically extract their intersections But you can do similar things with free soft. You can use Rod Holcombe`s software (Georient): http://www.holcombe.net.au/software/index.html or you can visit this links: http://www.science.smith.edu/departments/Geology/Structure_Resources/softwar e.html or Nestor Cardozo`s web (Soft for Mac OS X ): http://homepage.mac.com/nfcd/work/programs.html Finally, a good GMT (http://gmt.soest.hawaii.edu/) or Matlab script will also do the job. Hope it will help, Saludos, Juan Álvarez García Departamento de Geodinámica / Department of Geodynamics Facultad de Ciencias Geológicas / Faculty of Geology Universidad Complutense de Madrid C/Jose Antonio Novais s/n 28040 Madrid (ESPAÑA-SPAIN) Tlf: 00-34-91-3944834 e-mail:<[log in to unmask]> http://www.ucm.es/info/geodina/curriculums/Juan