✦ LIBER ✦

Mass spectrometry and geochronology

✍ Scribed by John R. de Laeter

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 405 KB
Volume: 17
Category: Article
ISSN: 0277-7037
DOI: 10.1002/(sici)1098-2787(1998)17:2<97::aid-mas2>3.0.co;2-j

No coin nor oath required. For personal study only.

✦ Synopsis

Rutherford had determined the amount of uranium and radium in the rock, calculated the annual output of alpha small black rock in his hand, met the Professor of Geology; ''Adams,'' he said, ''how old is the Earth supposed to be?'' particles, was confident that these were helium, measured the amount of helium in the rock and by simple division The answer was that the various methods led to an estimate of 100 million years. ''I know,'' said Rutherford quietly, found the period during which the rock had existed in a compacted form. He was the pioneer in this method and his ''that this piece of pitchblende is 700 million years old.'' This was the first occasion when so large a value was large value surprised and delighted both geologists and biologists.'' (Eve, 1939). given, based too on evidence of a reliable character; for I. Introduction .

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