... worldformanyyears,untilacatastropheoccurredonMartinique,an FOS _Earth Science_DC.indd 67 2/8/10 10:57:41 AM earth ScienceS islandintheCaribbeanSea OnMay8,1902,MountPeléeerupted,destroyingtheisland’scityofSaint-Pierre and killing30,000people ... Suchaneventmightcausean“avalanche”ofrockymaterial and lighterelementsthatcomposethebound- FOS _Earth Science_DC.indd 58 2/8/10 10:57:38 AM Origin and Variability of earth s Magnetic Field arybetweentherockylowermantle and theliquidoutercore ... Paleomagnetismreferstothepreservationorrecordof Earth smagneticfieldinthestructureofrocks and FOS _Earth Science_DC.indd 53 2/8/10 10:57:37 AM earth ScienceS other geological formations Studies such as that of Tarduno and his...