Figure F3. Bio- and magnetostratigraphic data for Sites 1168 and 1170-1172, as of August 2002 (errors given based on lower and upper samples confining biostratigraphic datums) (see also Pfuhl et al., in press; Stickley et al., this volume), for the interval from 38 to 14 Ma including additional control points for the Oligocene and early Miocene interval based on similarities between the records (see Table T1 and text for details). At all four sites we follow largely the sedimentation pattern suggested by the magnetostratigraphy (MR = magnetic reversals). Our control points are consistent within the magnetostratigraphic outline including a few biostratigraphic datums (NF = nannofossils, PF = planktonic foraminifers, D = diatoms, RD = radiolarians, and DF = dinoflagellates), with the exception of Site 1172. Here extremely low sedimentation rates suggest difficulties in identifying the magnetic reversals across the Oligocene/Miocene boundary. Our age models suggest there is no hiatus at the level of the Marshall Paraconformity at Site 1168, but a relatively strong reduction in sedimentation rate across the Oligocene/Miocene boundary (see text for discussion). Scales for all four sites are identical. Ages are after Cande and Kent (1995).

Figure F3. Bio- and magnetostratigraphic data for Sites 1168 and 1170-1172, as of August 2002 (errors given based on lower and upper samples confining biostratigraphic datums) (see also Pfuhl et al., in press; Stickley et al., this volume), for the interval from 38 to 14 Ma including additional control points for the Oligocene and early Miocene interval based on similarities between the records (see Table T1 and text for details). At all four sites we follow largely the sedimentation pattern suggested by the magnetostratigraphy (MR = magnetic reversals). Our control points are consistent within the magnetostratigraphic outline including a few biostratigraphic datums (NF = nannofossils, PF = planktonic foraminifers, D = diatoms, RD = radiolarians, and DF = dinoflagellates), with the exception of Site 1172. Here extremely low sedimentation rates suggest difficulties in identifying the magnetic reversals across the Oligocene/Miocene boundary. Our age models suggest there is no hiatus at the level of the Marshall Paraconformity at Site 1168, but a relatively strong reduction in sedimentation rate across the Oligocene/Miocene boundary (see text for discussion). Scales for all four sites are identical. Ages are after Cande and Kent (1995).