Sentences with phrase «calcite precipitation»

Diminished calcification led to a reduction in the ratio of calcite precipitation to organic matter production.

«Microbes involved in the nitrogen cycle, which are still active today, could have played a major role in calcite precipitation because of their ability to increase the pH,» explains Dr Stinnesbeck.

Not exact matches

The afternoon sessions on water isotopes in precipitation was quite exciting because of the number of people looking at innovative proxy archives, including cave records of 18O in calcite, or deuterium in leaf waxes, which are extending the coverage (in time and space) of this variable.

Laboratory precipitation of calcite: the residuals from the linear fit to plotted T: dO18 data from Table 1 yielded a systematic 1 - sigma error in temperature = (+ / --RRB- 2.2 C.

The δ18O of speleothem calcite at this Puerto Rican location varies primarily in response to changes in the amount of summer - time precipitation.

The magnitude of sea - level estimates for the past 100 million years rely heavily on foraminiferal calcite oxygen isotopes (δ18O), which are influenced by temperature, evaporation and precipitation, and diagenesis2.