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There are jokes about ending up in a (vegetable) bed on the first date.Katelyn Leplinski, 21, and Joseph Hartmann, 22, cleared weeds out of a shallot patch and chatted during a weed dating event Tuesday at the Cornercopia Student Organic Farm on the University of Minnesota campus in St. It's all in good fun, said Tracy Singleton, the cafe's owner. " But instead of sitting at tables, these daters crouched over rows of red onions. A few farms across the country are organizing events for singles looking to escape the formula of online dating or the convention of the bar scene for something a bit more ... Participants rotate from person to person, from chard to cherry tomatoes.Rather than fiddling with drinks, they yanked up weeds. It's "like speed dating," a Boise farm advertises on its website, "but much more badass." On Tuesday, a dozen 20-somethings gathered at the Cornercopia Student Organic Farm on the University of Minnesota's St.“ I just wanted to contact you to say that we have an amazing success story!I had been on other dating websites and had no success.Paul campus for what might have been the state's first weed dating meet-up.

U concentrations for 30-μm-diameter spots ranged from 50 to 1000 ppm in these types of materials.The technique is limited to material with U concentrations greater than ∼50 ppm.However, the high spatial resolution, small sample requirements, and the ability to avoid detrital material make this technique a suitable technique for dating many Pleistocene deposits formed in semi-arid environments.Comparison with standard TIMS (Thermal Ionization Mass Spectrometry) measurements from separate microdrilled samples suggests that although the analytical precision of the ion microprobe (SHRIMP-RG) measurements is less than TIMS, the high spatial resolution results in better accuracy in the age determination for finely layered or complex deposits.The ion microprobe approach also may be useful for pre-screening samples to determine the age and degree of post-depositional alteration, analyzing finely layered samples or samples with complex growth histories, and obtaining simultaneous measurements of trace elements. The buried wood sample was a larch stump from the reference Lipovka section located on the Tobol River bank (southwestern Western Siberia, lat 57°55′ N).A buried soil occurs in the middle part of the sequence, in which the stump layer was found.The model of continuous deposition also predicts discordance between ages obtained using different radiometric methods for the same subsample.Differences in half-lives will result in younger apparent ages for the shorter-lived isotope due to the greater influence of younger materials continuously added to mineral surfaces.This model assumes that individual subsamples represent mixtures of older and younger material, and that calculations using the resulting isotope ratios reflect an average age.Ages calculated using the continuous-deposition model for opals imply average mineral growth rates of less than 5 mm/m.y.


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