DISCUSSIONS
Topics for discussion sessions and links to information on these topics
RESOURCES
Access to class materials and reference to relevant text chapters for each topic
ASSIGN.
Details of assignments and resources on these topics
A summary of course themes and learning objectives
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PLEASE complete the Discussion Topic #2 Survey on Oncourse before investigating the Links below
Questions Concerning Fragmentary Records of Time
- What forms of evidence are used to provide absolute or relative ages for rocks?
- How reliable are they?
- How well defined are the relative ages of rocks?
- What constrains their age precision?
- What limits their use?
- What resets the clock in a rock?
- Which rocks are most difficult to date?
- What are the major principles of stratigraphy?
- How have they been tested and proven?
- Are they applicable throughout geological time?
- How much time is represented by the geological record?
- How continuous is the sedimentation process?
- How common are erosional gaps?
- How big are the gaps in the record (unconformities or hiatuses)?
Websites with Resources and Information on Absolute & Relative Dating
- Principles of Radioactive Dating
- Dating of Earth Materials
- http://www.globalchange.umich.edu/globalchange1/.../clocks_in_rocks.html
- http://www.talkorigins.org/faqs/dating.html
- Principles of Stratigraphy and Relative Dating
- Interactive Exercise in Age Dating
- Discussion of Application of Isochrons
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Department of Geological Sciences,
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Phone: (812) 855-5582 Last updated: 18 February 2004
Comments: simon@indiana.edu
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