geollogy-radio metric dating and half lives
posted by camille on .
How would I go about solving this problem?
a granite contains150 parts per million (by atomic proportion) ppma of 235 U and 1050 ppma of 207 Pb. Using the decay rate from above, how old is this rock?
My teacher said the answer was 2100. How did he get that?
(Radio active isotope)