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geochronology |
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geochronologyBranch of geology that deals with the dating of rocks, minerals, and fossils in order to create an accurate and precise geological history of the Earth. The geological time scale is a result of these studies. It puts stratigraphic units in chronological order and assigns actual dates, in millions of years, to those units. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The second phase, started in 1998, consisted of extensive geological mapping, supplemented by U-Pb geochronological work; by 2003, more than twenty, 1:250,000 mapping projects were completed. Since the Clovis sites give the earliest unequivocal data on the "peopling" of the Americas, it has been of enormous interest to find a geochronological link to an earlier culture. Advances in analytical capabilities over the past 10-15 years allow geochronological studies to be carried out at a scale similar to petrological observation and within the realm of mineral processes. |
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