BIOL 1002 Chapter : Chapter 25
Document Summary
Alfred wegener: german meteorologist and polar explorer, wrote the origins of the continents and oceans in 1915. Glacial evidence: evidence of late paleozoic glaciers found on five continents, some of this evidence is now far from the poles, these glaciers could not be explained unless the continents had moved. Paleoclimatic evidence: wegener predicted rocks defining pangea climate belts. Identical fossils found on widely separated land masses. Matching geological units: distinctive rock assemblages and mountain belts match across the. Paleomagnetism (pmag) scientific data confirms plate tectonics. Geographic pole pole about which earth rotates (slanted pole) Magnetic north pole where a compass needle points (moves constantly) Magnetic inclination is the angle between a field line and the earth"s surface. These rocks have a mineral called magnetite : basalt volcanic rock. Magnetic declination is the angle between geographic and magnetic north (affects compass) Pmag is the orientation of the magnetic field at the time a rock formed.
