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of an exposed rock, as compared to a very small amount of production in the deeper subsurface. Chlorine-36 is produced in rocks at the earth's surface almost entirely by cosmic-ray-induced reactions. PHILLIPS, 1994, 36-Cl surface exposure determinations of eruption ages for quaternary lava flows of the Zuni-Bandera volcanic field: New Mexico Geology, v. It is an excellent way of directly dating glaciated regions.It is particularly useful in Antarctica[1], because of a number of factors[2]: Cosmogenic nuclide dating is effective over short to long timescales (1,000-10,000,000 years), depending on which isotope you are dating.Earth is constantly bombarded with primary cosmic rays, high energy charged particles — mostly protons and alpha particles.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.

We also discuss how our system has been evaluated and our plans for future work. TY - CHAPT1 - ACET2 - Age Calculation Engine - A design environment for cosmogenic dating techniques AU - Anderson, Ken AU - Bradley, Elizabeth AU - Zreda, Marek AU - Rassbach, Laura AU - Zweck, Chris AU - Sheehan, Evan PY - 2007Y1 - 2007N2 - ACE (Age Calculation Engine; previously called i Cronus) is a design environment for analyzing data used in cosmogenic dating methods.These properties have allowed us to create an environment that directly supports the tasks that geoscientists perform as they work on developing new algorithms for cosmogenic dating, such as running calibrations, defining new experiments, and evaluating the impacts of scaling factors on the calculated ages of samples.Our goal is to provide geoscientists using cosmogenic dating methods with a flexible and powerful software infrastructure upon which to base their future research efforts.Different isotopes are used for different lengths of times.This long period of applicability is an added advantage of cosmogenic nuclide dating.These techniques rely on measurement of cosmogenic nuclides that begin to build up as soon as a rock is exposed to cosmic rays.