question archive The measured half life for the decay of Rb-87 to Sr-87 (a beta decay process) is 49 billion years! If we analyze a mineral and finds that it contains 777 ppm (parts-per-million) of Rb-87 and 33 ppm of Sr-87, then how old is the rock? This particular rock was not exposed to groundwater
The measured half life for the decay of Rb-87 to Sr-87 (a beta decay process) is 49 billion years! If we analyze a mineral and finds that it contains 777 ppm (parts-per-million) of Rb-87 and 33 ppm of Sr-87, then how old is the rock? This particular rock was not exposed to groundwater
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The measured half life for the decay of Rb-87 to Sr-87 (a beta decay process) is 49 billion years! If we analyze a mineral and finds that it contains 777 ppm (parts-per-million) of Rb-87 and 33 ppm of Sr-87, then how old is the rock? This particular rock was not exposed to groundwater.
