Dating
See these links:
Assumptions and Problems of Radioactive Methods
Radioactive Dating in conflict (lots of graphics in this link, so be patient while it loads)
Potassium-Argon and Argon-Argon Dating of Crustal Rocks and the Problem of Excess Argon
Radio interview of Dr. Russell Humphreys, Nuclear Physicist
Suggested Reading. Click on the image below for more information about this book, and to order it.