Huntingdonshire Dc Mea Green Force Launch 8th May 2009
Absolute Dating 8.3
Chapter 8: Rocks and Minerals Section 2: Rocks Section 3: Rock Cycle.
Absolute Dating. J F M A M J J A S O N D J Earth Forms Earth Cools First Life Abundant Oxygen Multicellular Organisms Plants and Animals Dinos 15-25 Humans.
Radiometric Dating of Rocks 1896-1898 Radioactivity discovered by: Henri Becquerel and Marie and Pierre Curie.
Fossils and evolution Rates of deposition of sediments Cooling of the Earth from a molten state Radiometric Dating Methods for Estimating the Age of the.
Radioactive dating. III. Radioactive Dating A. Used to find ABSOLUTE age in years. B. Radioactive ISOTOPES in rocks DECAY away at a predictable rate.
29.3 A BSOLUTE T IME. H ISTORICAL M ETHODS Counting rigs in trees – more accurate, but cannot calculate very old material.
Age Dating of Rocks. Question: How do we know how old rocks are? How do we know how old rocks are?
Dating the Earths Rocks. Quantitative Geologic Time Early estimates Calculation based on: Old Testament – Earth is 6,015 years old James Ussher (1581-1656)
The Changing Earth. Early on, it was recognized that the layers in geological strata represent periods in the earths history and contain fossils of organisms.