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Additionally, this method is applied for isotope analysis (e.g., U-Pb dating of zircon).
Using the U-Pb method, this laboratory also provides precise dates for rocks and minerals ranging in age from billions of years to about a million years.
Because of the extreme resistance of such minerals as zircon to age resetting, the U-Pb system has proven more reliable than other dating methods for rocks that have been strongly reheated, sheared, or exposed to hydrothermal fluids.
A single online analysis from laser heating of a sample to the analysis of the argon isotopes takes ca. Using the CO laser, stepwise heating analyses of grain samples from 0.1 mg to a few tens of mg have been performed in the Potsdam laboratory.
In section samples, the UV pulsed laser is able to ablate spots with minimum diameters of a few tens of micrometers.
The small sample particles are atomized and positively ionized at about 8000 °C hot plasma, accelerated and transported into the high vacuum of the mass spectrometer.
There they are separated according to their mass/charge and energy/charge ratio prior to time resolved detection.Reporting time for fast handling is maximum 6 weeks but normally 3-4 weeks.All samples submitted for dating must be accompanied by a sample description form.The resulting laser craters are only a few µm wide, therefore this minimal invasive method is suitable for valuable materials (e.g., archeological artifacts, gemstones).At the laboratory of the Institute for Geosciences (Johannes Gutenberg University Mainz), the LA-ICP-MS method is applied since 2004 for the characterization of samples with respect to their trace element composition related to geology, mineralogy, climate research, materials sciences, gemstone research, and archaeology.The Radiocarbon Dating Laboratory in Lund performs dating on geological and archaeological samples.Tags: Adult Dating, affair dating, sex dating