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Jump to navigation. PIs: Joerg M. Schaefer , Michael Kaplan. Terrestrial cosmogenic nuclides are produced by interactions between secondary cosmic rays and near surface rocks. Our research interests cover a wide spectrum of earth scientific disciplines and include timing of ice ages, subglacial erosion rates, uplift rates of Pleistocene terraces, and a better understanding of the production systematics of cosmogenic nuclides.
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Surface exposure dating

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Online cosmogenic-nuclide calculators

Figure: Quartz band on sliding surface bombarded by a cosmic ray and producing here the nuclide 10Be. Earth is constantly bombarded with cosmic rays that are high-energy charged particles. These particles interact with atoms in atmospheric gases and thereby producing northern lights and the surface of Earth. In rock and other materials of similar density, most of the cosmic ray flux is absorbed within the first meter of exposed material in reactions that produce new isotopes called cosmogenic nuclides.
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Historical Geology/Cosmogenic surface dating

How can we date rocks? Using cosmogenic nuclides in glacial geology Sampling strategies cosmogenic nuclide dating Difficulties in cosmogenic nuclide dating Calculating an exposure age Further Reading References Comments. Geologists taking rock samples in Antarctica for cosmogenic nuclide dating. They use a hammer and chisel to sample the upper few centimetres of the rock. Cosmogenic nuclide dating can be used to determine rates of ice-sheet thinning and recession, the ages of moraines, and the age of glacially eroded bedrock surfaces.
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Presented in a clear and straightforward manner with the minimum of technical detail, this text is a great introduction for both students and practitioners in the Earth, Environmental and Archaeological Sciences. Not about the singles scene in the Mesolithic. Quaternary Dating Methods covers the range of techniques used for Quaternary chronology: radiometric dating; radiation exposure dating; annual bands Mike Walker is a highly experienced, script writer of drama and documentary for film, radio and television. He has also written several novels and non-fiction works and teaches creative writing at Morley College London.
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