Sentences with phrase «stable oxygen isotope ratios»
Stable oxygen isotope ratios contained in the shell can be used to infer past water temperatures.
https://serc.carleton.edu/
Like the data used right through 0.02 to 66 My, the Freidrich et al collection comprises stable oxygen isotope ratios from the shells of tiny bottom - dwelling, deep - water marine organisms (benthic foraminifera).
This proxy, known as the δ18O stable oxygen isotope ratio, varies in proportion to the ambient moisture.
Not exact matches
The information about oxygen concentration comes from the isotopic composition of carbon or rather from the ratio between the stable carbon isotopes 12C and 13C.
One group of students has been drilling modern and fossil teeth to obtain samples that will be analyzed to examine stable carbon and oxygen isotope ratios.
Stable isotope ratios of oxygen reflect water temperatures, with higher δ18O values indicating colder water [6], [9], [12], such as water upwelled from lower depths.
The ratio of stable isotopes oxygen - 18 and oxygen - 16 in the foraminifera is an indicator of ocean temperature.