Sentences with phrase «on stable isotope ratios»

Not exact matches

«It will enable teachers to introduce students to things called stable isotopes, which is great because we're made up of stable isotopes, and that ratio varies depending on what we eat.»

For instance, radiocarbon dating determines the age of biological remains based on the ratio between the carbon isotopes (atoms of the same element with different numbers of neutrons) carbon - 12 and carbon - 14 it holds - this proportion changes as radioactive carbon - 14 breaks down while stable carbon - 12 does not.

Stable carbon isotope ratio analyses on trace methane from ice samples.

Stable isotope ratios in atmospheric methane and carbon dioxide provide a window on the sources as well.

No, some other animal probably converted the grass into meat on the hoof, and the hominids got the characteristic carbon stable isotope ratio from eating the grazing animal — they ate grass indirectly, at one remove.

Early TRL projects focused on establishing long tree - ring records from temperature - sensitive boreal forest locations in North American for studies of global change, using dendrochronologically dated wood, to investigate the value of stable isotope ratios in cellulose as paleo - thermometers and developing the necessary computer software for processing the data.