GEOL 1001 Chapter : Chapter 2 Notes
Document Summary
Evidence of late paleozoic glaciers on five continents (glaciers don"t form around the equator proves ice age) Some glaciers evidence far from the poles (where it"s cold) Glaciers could not be explained unless there was an ice age: paleoclimatic evidence. Wegener predicted rocks defining climate different: fossil evidence. Identical fossils found in places across the globe that would not belong there unless pangaea existed: matching geological units. Any sedimentary rock: earth"s magnetic field, caused by the rotation of the liquid fe core (outer core) Similar to a bar magnet (north and south pole. 2 north poles: geographic north, pole about which earth rotates, magnetic north, where a compass points, moves constantly, within 1500km of geographic north, magnetic declination. 11 degrees away from true / geographic north. Angle between geographic and magnetic north (top: 90 degrees east, 180 degrees south, 270 degrees west, 0/360 degrees north, magnetic inclination. Angle between a filed line and the earth"s surface (side)
