Changes

[[:file:applied-paleontology_fig17-29.png|Figure 1]] illustrates a typical oxygen isotope record (expressed as delta oxygen-18 values) for the middle Tertiary, showing standard Oligocene and Miocene isotope stages.

[[:file:applied-paleontology_fig17-29.png|Figure 1]] illustrates a typical oxygen isotope record (expressed as delta oxygen-18 values) for the middle Tertiary, showing standard Oligocene and Miocene isotope stages.

This record is for the middle Tertiary and shows standard Oligocene and Miocene isotope stages (Oi 1 = Oligocene isotope stage 1; Mi 1 = Miocene isotope stage 1; etc.). Oxygen isotope data are based on analyses of benthic foraminifera recovered from cores taken at seven Atlantic and Southern Ocean sites of the Ocean Drilling Program. The curve has been fitted through the data using statistical filter and smoothing techniques.

This record is for the middle [[Tertiary]] and shows standard Oligocene and Miocene isotope stages (Oi 1 = Oligocene isotope stage 1; Mi 1 = Miocene isotope stage 1; etc.). Oxygen isotope data are based on analyses of benthic foraminifera recovered from cores taken at seven Atlantic and Southern Ocean sites of the Ocean Drilling Program. The curve has been fitted through the data using statistical filter and smoothing techniques.

==Oxygen isotope correlation==

==Oxygen isotope correlation==