Sentences with phrase «oxygen isotopes present»

The ice shelf had been thinning slowly, however, which was evidenced by a change in the oxygen isotopes present in plankton preserved from the underlying water column.

Not exact matches

In his talk, Agee presented the results of the isotope analysis for oxygen as well as hydrogen.

The researchers found that a certain kind of oxygen isotope was present in the lunar soil, an isotope that occurs on Earth.

The reason oxygen isotopes are present in a different pattern is because they are derived from sustained chemical reactions occurring on the surface of the outer solar nebula, rather than from a one - time event.

The oxygen and carbon isotopes present in the remains provided them with records of temperature and humidity levels during the period.

Here, we present a record of Holocene glacial ice discharge, derived from the oxygen isotope composition of marine diatoms from Palmer Deep along the west Antarctic Peninsula continental margin.

The scientists examined surveys of the ratio of strontium to calcium content and heavy oxygen isotopes, both are sensitive recorders of sea surface temperatures past and present.

Calcareous nannofossils from approximately the past 7000 yr of the Holocene and from oxygen isotope stage 5 are present at 39 analyzed sites in the central Arctic Ocean.

Now in a Climate of the Past paper, Seltzer et al. present a new record of oxygen isotopes in atmospheric O2 derived from two Antarctic ice cores.

Despite these successes in linking variations in greenhouse gas concentrations to climate change in the geologic past, the oxygen isotope palaeotemperature record from 600 Myr ago to the present displays notable intervals for which inferred temperatures and pCO2 levels are not correlated1.