Changes

Figure 17-29 illustrates a typical oxygen isotope record (expressed as delta oxygen-18 values) for the middle Tertiary, showing standard Oligocene and Miocene isotope stages.

Figure 17-29 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|thumb|{{figure number|17-29}}. Copyright: Wright and Miller, 1993; courtesy American Geophysical Union. Time scale adapted from <ref name=ch17r12>Berggren, W., A., Kent, D., V., Flynn, J., J., 1985a, Paleogene geochronology and chronostratigraphy, in Snelling, N., J., ed., The Chronology of the Geological Record: Geological Society of London Memoir 10, p. 141–195.</ref> <xref ref-type="bibr" rid="ch17r13">b.]]

[[file:applied-paleontology_fig17-29.png|thumb|{{figure number|17-29}}. Copyright: Wright and Miller, 1993; courtesy American Geophysical Union. Time scale adapted from <ref name=ch17r12>Berggren, W., A., Kent, D., V., Flynn, J., J., 1985a, Paleogene geochronology and chronostratigraphy, in Snelling, N., J., ed., The Chronology of the Geological Record: Geological Society of London Memoir 10, p. 141–195.</ref><ref name=ch17r13 />.]]

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.

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