Potassium-argon dating , method of determining the time of origin of rocks by measuring the ratio of radioactive argon to radioactive potassium in the rock. This dating method is based upon the decay of radioactive potassium to radioactive argon in minerals and rocks; potassium also decays to calcium Thus, the ratio of argon and potassium and radiogenic calcium to potassium in a mineral or rock is a measure of the age of the sample. The calcium-potassium age method is seldom used, however, because of the great abundance of nonradiogenic calcium in minerals or rocks, which masks the presence of radiogenic calcium. On the other hand, the abundance of argon in the Earth is relatively small because of its escape to the atmosphere during processes associated with volcanism.
New survey uncovers hidden facts about dating apps
New survey uncovers hidden facts about dating apps | WBTW
From the art of the female orgasm to STIs and condoms, here are 50 sexual truths that will fascinate, entertain and undoubtedly educate you. We automatically perceive people who smell good as more attractive. Ginger stimulates the feelings of excitement associated with sex. Eating ginger elevates your heart rate, gets your blood flowing and gets you excited for the night ahead. A study found that men feel more emotional pain after a breakup than women do.
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