GEOL 1003 Chapter : GEOL 1003 Sep 24
Document Summary
1: because it erroneously assumes the ocean existed since the. 2: does not account for plate tectonics which subducts the entire. *uses the amount of time that it takes for lava to cool at surface to. 3: does not account for gaps, unconformities, and metamorphic rock. Salts in the ocean - how long it took for the ocean to salinate. Calculations range from 1-10 million years, which is much too young. As water level rises, it deposits sediments higher and higher - transgression. As water level recedes (lowers), it removes sediments - regression. ~ ocean tastes so salty due to high ionic concentration (na, so4, cl) Potassium or uranium are good for estimating earth"s age. Volcanic rock is the best for dating sedimentary rock - a dike is always younger than the sediment it is cutting through, same with a fault line.
