“Boltwood, Bertram Borden (1870–1927)”的概念、定义、翻译、参考文献-科学参考

单词	Boltwood, Bertram Borden (1870–1927)
释义	Boltwood, Bertram Borden (1870–1927) Geology and Earth Sciences Professor of radiochemistry at Yale University, in 1907 Boltwood made early determinations of the age of the Earth using uranium:lead ratios. He was able to show a long geologic timescale of up to 2000 Ma. See radiometric dating.
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