Slide 1Radiometric Dating Slide 2 First Attempted in 1905 Compare U and Pb content of minerals Very crude but quickly showed ages over a billion years Skepticism about utility…

Slide 1Fire History from Tree Rings Slide 2 Justification: Wildfires in Montana and Idaho … Slide 3 Justification: Wildfires in Florida and Georgia … Slide 4 Justification:…

Slide 1UNSW Understanding Past Climate Change -Past Climate is known as Paleo-climate, experts known as paleo- climatologists. -How do we detect past climatic change? -Understanding…

Slide 1 Slide 2 UNIT SIX: Earth’s Structure  Chapter 18 Earth’s History and Rocks  Chapter 19 Changing Earth  Chapter 20 Earthquakes and Volcanoes Slide 3 Slide…

Slide 1Isotopes and Tree Rings Slide 2 Isotopes in Tree Rings Environmental processes captured in tree rings can be embodied either physically or chemically. Chemical properties…

Slide 1 THE CLIMATE RECORD & SEVERE WEATHER CLIMATOLOGY Slide 2 Slide 3 PROXY DATA Historical Documents Biological evidence coral, forams, pollen, tree rings Geological…

Slide 1 Fire History and Forest Succession in Yellow Pine Stands of the Appalachian Mountains Charles W. Lafon, Department of Geography, Texas A&M University Henri D.…

Slide 1 Insights into Climate Dynamics from Paleoclimate Data Michael E. Mann Department of Environmental Sciences University of Virginia Richard Foster Flint Symposium Dynamical…