ESC 1000- Final Exam Guide - Comprehensive Notes for the exam ( 153 pages long!)
Document Summary
Iron (34. 6%) oxygen (29. 5%) silicon (15. 2%) magnesium (12. 7%) Sio4: key component in most of the common minerals. Surface doesn"t rise and fall with the tides. Thinnest at ocean basins, thickest at the continents (up to 150km) Portion of the mantle where solid rocks flow. Fully developed continental drift hypothesis in 1915, he named his supercontinent pangea (all land) During the mesozoic time period (age of the dinos, 251-65mya), pangea broke apart to form the continents we see today. Lines of evidence for wegener"s continental drift hypothesis: fit of continents- fit together like a puzzle, glacial deposits (till) and striations- sediment trapped and dragged by a glacier acts like a rasp, cutting into continental rocks. 3)glaciations- distributed amongst different continents: fossil distribution- fossils of different prehistoric animals are distributed amongst different continents, climate belts, lithology- once connected and later broken apart. The earth was once a super continent called pangea, all land was together.
