Petrology Tulane University Prof. Stephen A. Nelson Radiometric Dating Prior to the best and most accepted age of the Earth was that proposed by Lord Kelvin based on the amount of time necessary for the Earth to cool to its present temperature from a completely liquid state. Although we now recognize lots of problems with that calculation, the age of 25 my was accepted by most physicists, but considered too short by most geologists. Then, in , radioactivity was discovered.
Potassium-argon (K-Ar) dating
Potassium-argon (K-Ar) dating (video) | Khan Academy
Radiometric Dating. Photo Gallery of Dating errors. Scientific Essay by David A. Plaisted "Proof of the pudding There are circumstances that provide opportunities for testing. Dinosaurs which are supposed have lived at least 60 million years ago, should not yield dates of thousands of years. Rocks known to have formed in historical times should not yield dates of millions of years.
It is interesting that you chose an article that is 20 years old and then assert that AiG should update its article database. As you should know, the models that AiG uses change as we recognize their shortcomings and new data comes to light. As a result, more recent articles will reflect the current thinking. One example would come from my book, the fourth chapter is available on the AiG page today and deals with that very topic. However, the basic argument is the same, as you noted.
Potassium—argon dating , abbreviated K—Ar dating , is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium K into argon Ar. Potassium is a common element found in many materials, such as micas , clay minerals , tephra , and evaporites. In these materials, the decay product 40 Ar is able to escape the liquid molten rock, but starts to accumulate when the rock solidifies recrystallizes.