Geologic Time and Earth History. Two Conceptions of Earth History: Catastrophism Assumption: Great Effects Require Great Causes Earth History Dominated.
LESSON 10 – Earths History: Estimating Geologic Time Modified from 28,7.9.
What can downhole logs tell us about Earth history? Stuart Robinson Lamont-Doherty Earth Observatory of Columbia University.
A set of different elements that behave coherently and a whole zoo of isotopes Not useful for Earth history.
The other volatile: O 2 What is the mantle/surface/biology connection? Charles H. Langmuir Harvard University [email protected].
Earth’s climate history. Cenozoic cooling CaCO 3 is taken up by marine organisms Coccolithophorid Foraminifer.
Paleosols and Paleoclimate Soils are everywhere and can be used in conjunction with other proxies that are limited geographically Maintain “Geochemical.
“The pale blue dot” …. Earth from the Voyager spacecraft, > 4 billion miles away .
Physical Science Geologic Time. Observations Regarding Rock Layers Relative Dating – Lower layers of sedimentary rock are formed before older layers.
Climate through Earth history. Cenozoic cooling Ice Age North Polar Coverage.
Evolution of Development: Evolution of Animal Body Plans as an Example.