The oxygen isotope composition of I-type spherules is controlled by the composition of the oxidizing species (for example, atmospheric O 2), the fractionation during oxidation of the Fe ...

Nakamura wants to see whether it’s possible to detect oxygen-30. Because the stability of different isotopes is a relative measurement, it would be helpful to compare 28 O with this heavier ...

Oxygen, for example, has eight protons. However, the number of neutrons in an atom can vary, leading to different forms of ...

Using zircon oxygen isotopes, researchers previously discovered that liquid water covered parts of our planet some 4.3 billion years ago, suggesting the surface cooled just a few hundred million ...

Her goal is to create maps using a variety of isotopes. For instance, levels of oxygen isotopes can tell scientists whether a person lived in a warm, dry region or a moist, tropical one.

Using a powerful particle accelerator, researchers have spotted an elusive variant of oxygen for the first time. The isotope, oxygen-28, was predicted to be stable thanks to its eight protons and ...

Oxygen isotopes within these zircons indicated that the crust had gone through low-temperature hydrothermal changes, too. This meant that it was the top of the crust—in contact with water and ...

The Dole effect describes an inequality in the ratio of the heavy isotope 18 O to the lighter 16 O, measured in the atmosphere and in seawater. The reason is as follows: oxygen, produced as a waste ...

Called a laser fluorination line, the apparatus extracts and measures oxygen isotopes. This is housed in volcanologist Ilya Bindeman's lab at the University of Oregon. Photo by Charlie Litchfield ...