Cosmogenic dating group whos mya dating
It is an excellent way of directly dating glaciated regions.
It is particularly useful in Antarctica, because of a number of factors: Cosmogenic nuclide dating is effective over short to long timescales (1,000-10,000,000 years), depending on which isotope you are dating.
| Using cosmogenic nuclides in glacial geology | Sampling strategies cosmogenic nuclide dating | Difficulties in cosmogenic nuclide dating | Calculating an exposure age | Further Reading | References | Comments | 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.
Cosmogenic nuclide dating uses the interactions between cosmic rays and nuclides in glacially transported boulders or glacially eroded bedrock to provide age estimates for rock at the Earth’s surface.
By the time the cosmic ray cascade reaches the surface of Earth it is primarily composed of neutrons.
When one of these particles strikes an atom it can dislodge one or more protons and/or neutrons from that atom, producing a different element or a different isotope of the original element.
These particles interact with atoms in atmospheric gases, producing a cascade of secondary particles that may in turn interact and reduce their energies in many reactions as they pass through the atmosphere.For the last few years I've been an active participant in the CRONUS-Earth project, an NSF-sponsored effort to do just that.Our CRONUS page contains more information and useful data from the project.I teach geology and geochemistry, but if you're looking for information about that, please refer to my class web pages.Zach Ploskey Ph D student I am broadly interested in geomorphology, glacial geology and the use ofcosmogenic nuclides to understand landscape evolution during the Quaternary.