Sentences with phrase «different isotope composition»
The second method involved measuring the spread of air with water molecules with different isotope composition in the layers with the compressed snow.
https://www.sciencedaily.com/ Not exact matches
For this study, the team set out to investigate the timing of supernova dust formation by measuring isotopes — versions of elements with the same number of protons but different numbers of neutrons — in rare presolar silicon carbide grains with compositions indicating that they formed in type II supernovae.
The researchers looked at the nitrogen stable isotope composition of different members of the food web at suburban ponds.
«We therefore had to use a different method, so we measured the composition of carbon isotopes — the ratio of protein and mineral content — in the fossilized sloth bones,» explains Bocherens, and he continues, «Our measurements show that Megatherium lived on an exclusively vegetarian diet.»
Because different isotopes of water freeze at different rates at different temperatures, ice composition depends on the temperature at which it formed.