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Earth System Topics: Time/Earth History

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Using Dendrochronology to Determine the Age and Past Environments of the Black Forest Region, Colorado, USA
Paul Grogger, University of Colorado at Colorado Springs
The use of dendrochronology in determining the geologic history of a location. The development of an understanding how tree growth can indicate the relationships between climate, geomorphology, ecology and archeology.

Hot spot volcanism in western North America
James Trexler, University of Nevada-Reno
Students use real data on age of volcanism and ash thickness distribution to better understand hot spot volcanic activity.

Timeline of the Early Earth
Selby Cull
Students assemble timelines of the early evolution of Earth's atmosphere, lithosphere, biosphere, and hydrosphere by examining data from Archean rocks and minerals.

Ocean Crust Ages Lecture Tutorial
Karen Kortz, Community College of Rhode Island; Jessica Smay, San Jose City College
Students work on this Lecture Tutorial worksheet on ocean crust ages in groups during lecture. It directly confronts misconceptions students have about the patterns of ages of the ocean crust, and interpretations that can be made.