isotope datingsample preparationsilicatessilicon 32soilsA procedure for the preparation of soil samples for Si measurements is described. Two different soil profiles have been studied. The obtained Si concentrations in these profiles indicate a sorption of Si on clay, ferric-manganese hydroxides as well...
material (Brown et al.2000; Pätzold et al.2014). It is also possible that the captured small body was a comet or an extinct comet. In the case of the captured asteroid scenario, like primitive carbonaceous chondrites of outer solar system origins, the moons are predicted to contain cryst...
Dating of soil samples was estimated using sedimentation rates of paleolakes in the central Altiplano of Bolivia, which are 70 km from both sites [32]. The sedimentation rate corresponds to approximately 1 mm yr−1, suggesting that our samples were between 500 and 1100 years old (S1:600 ...