Many Catholic churches traditionally move St Patrick's Day to another date if March 17 falls during Holy Week. Many immigrants from Ireland fled to other parts of the world, including Australia, Canada, the United Kingdom and the United States, in the 19th and 20th centuries.
Making the world better, one answer at a time. Passive continental margins are not areas of convergence. There is little volcanic and earthquake activity on passive margins. Active margins are areas of convergence where one plate is descending beneath another. They are associated with volcanic and earthquake activity.
â¢ Pacific = Active Margin geologic activity 11 The ocean floor can be classified as (a) Continental Margins âthe submerged outer edge of a continent (b) Ocean Basin â the deep seafloor beyond the continental margin There are two types of continental Margins (a)passive or trailing margins: margin of continent that moves away from spreading center â Atlantic-style margins (also Artic Ocean, Antarctica and Indian Ocean). Very little volcanic or earthquake activity is associated with passive margins. (b) active or leading margins: plate boundary located along a continental margin â ocean trenches where there is subduction of oceanic lithosphere â narrow, steep, with volcanic mountains (West Coast of the Americas). Active margins are the site of volcanic and earthquake activity. 12 Continental Margins