BIO356H5 Lecture Notes - Lecture 2: Igneous Rock, Radiocarbon Dating, Anticline
Document Summary
Igneous rock no fossils with igneous rocks because lava is what makes it and anything potentially preserved would be vaporized. Overtime volcanic cone disappears but granite takes millions of years to go away. Tectonic plates go into mantle and with pressure changes. Exposure to high temperature and pressure alters it: lime stone under pressure = marble the only difference is that one is exposed to pressure and the other isn"t. Metamorphic can be igneous of sedimentary which has been changed by exposure to stress and pressure. The shorter the half life the more dangerous it is. You cannot precisely age fossil in c because it can be way older layers in aquatic and marine environment dead organisms get trapped in layers and eventually under pressure turn to limestone. When there is no disturbance to carcass. Most fossils are damaged - pre and post fossilization: movement of earth.
