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.
Basic composition of continental margins, which include the continental shelf, continental slope, and continental rise. In contrast to the continental shelf, the continental slope is generally narrow in width, ranging from 6.2 to 62 miles (10 to 100 kilometers). Relatively steeper than the shelf, the slope angles down to the ocean basin at an average of 4 degrees; in some areas, the angle may be as much as 25 degrees.