FORC HOLOCENE LAVA FLOW DYNAMICS DIKE SWARM PELOTAS BASIN ANISOTROPY OF ANHYSTERETIC REMANENT MAGNETIZATION MECO EVENT GEOMAGNETISM THERMAL AUREOLE MARINE SEDIMENTS ANISOTROPY OF MAGNETIC SUSCEPTIBILITY NEOPROTEROZOIC VOLCANISM MELTING PROCESSES TEKTITE PALEOINTENSITY ARCHEOINTENSTIY PALEOMAGNETISM GEOMAGNETIC SECULAR VARIATION IMPACT GLASS MAGNETIC FABRIC PLEISTOCENE COMPOSITE DIKES