Figure F17. Expanded plot of biostratigraphic and paleomagnetic datum levels (see Tables T7 and T8) for the early Eocene-early Oligocene part of the geologic record. Paleomagnetic reversals and nannofossil datums are used to constrain average LSR vs. depth. Individual symbols represent different types of stratigraphic datums: solid circle = nannofossils datums, solid triangle = radiolarian datum, solid diamond = paleomagnetic reversal. Solid line segments = linear regressions of selected data points with the slope of these lines indicating sedimentation rates in m/m.y., as shown next to each segment. MARs are shown as values in mg/cm2/k.y. (see Table T9).