Isotope analyses showed that while the first fall had separated from its parent body about 3 million years ago, the second object became detached about 50 million years ago.
Not exact matches
Analysis of the water leaving Venus's atmosphere, however,
shows that many of the hydrogen ions are actually a stable
isotope of the element called deuterium, which consists of a proton and a neutron (rather than just a proton) in its nucleus.
Analyses of samples brought back from the Apollo missions in the 1970s
showed that the Moon has the same abundances of the three stable
isotopes of oxygen as Earth.
That dramatic idea encountered skepticism until an
analysis of the lunar rocks
showed that they have the same mix of oxygen
isotopes as rocks found on Earth, strongly suggesting a shared origin.
Isotope analyses focused on 15N, which reflects dietary animal protein and 34S, which
showed an increased amount of railway vegetation for rail - using bears in a previous study.
Analysis of
isotope ratios in hair samples
showed how much of the bears» diets came from human food.
Previous
analyses of the
isotopes in the bones of the 11 Stone Age individuals also
showed the hugely different diet the two groups had.
The team
showed through
isotope analyses of meteorites that Jupiter's solid core formed within only about 1 million years after the start of the solar system history, making it the oldest planet.
«This has enabled the stable -
isotope analysis to
show how his environment changed at different times in his life and, perhaps most significantly, identified marked changes in his diet when he became king in 1483.
3b)
Analysis of carbon -
isotope ratios
shows that the additional carbon in the atmosphere is fossil carbon.
It is appropriate as this point to add that if Bolin & Eriksson's conditions in the last paragraph were true, carbonated beer (Bohren, 1987) and soda «pop» as we know it would be an impossibility with their «buffer» factor (see below); rain and fresh water would not
show the observed equilibrium pH of 5.7 (Krauskopf, 1979); and experiments would not had
shown complete isotopic equilibrium between CO2 and water in just hours, which in turn is the prerequisite for routine stable
isotope analysis involving CO2 (Gonfiantini, 1981).
[6] A spectral
analysis of the American GISP2
isotope record [7]
showed a peak of [18O: 16O] abundance around 1500 years.
Molecular dating and stable
isotope analyses also
show that by very early in their evolutionary history, polar bears were already inhabitants of the Artic sea ice and had adapted very rapidly to their current and unique ecology at the top of the Arctic marine food chain.