The Geologic Time Scale 2012 2-Volume Set
".one of the main distinctions of the new version is the more detailed subdivision of the preceding Precambrian interval. As before, the earlier chapters of the book summarize the approaches used; they review the main methods of obtaining chronometric dates and calibrating them with geomagnetic polarity and orbital fluctuations, as well as the use of various stable isotopes in chronological and paleoenvironmental analysis.Required for specialist libraries and a valuable acquisition for other libraries lacking the 2004 edition."--CHOICE April 2013