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Table T5. Calcareous nannofossil data from selected samples, Hole U1356A. (See table notes.)

Core,
section 		Sample (cm) Marker species or datum Nannoplankton zone Chron/Subchron Chronostratigraphic unit
Upper Lower Martini, 1971 Okada and Bukry, 1980
318-U1356A-
  47R-3, 126–127 47R-4, 31–32 LO Reticulofenestra bisecta NP25 CP19b C6Cn.2r latest Oligocene close to O/M boundary
  47R-CC 48R-1, 6–7 LO Chiasmolithus altus NP25 CP19b CN8 late Oligocene
55R-CC     Reticulofenestra bisecta present NP25–NP17 CP19a–CP14b C6Cn (base) to C8n late Oligocene
60R-CC     Reticulofenestra bisecta present NP25–NP17 CP19a–CP14b C6Cn (base) to C8n late Oligocene
64R-CC     Dissolved NP 25? CP19a? ? ?
65R-CC     Dissolved NP 25? CP19a? ? ?
67R-CC     Reticulofenestra bisecta (reworked) NP25–NP17 CP19a–CP14b ? ?late Oligocene
73R-CC     Reticulofenestra bisecta, Cyclicargolithus floridanus, Chiasmolithus altus present NP25–NP22/23 CP19a–CP16c/17 Older than or = C8n late Oligocene
74R-CC     Reticulofenestra bisecta, Cyclicargolithus floridanus, Chiasmolithus altus present NP25–NP22/23 CP19a–CP16c/17 Older than or = C8n late Oligocene
  78R-CC 79R-1, 12–13 LO Cyclicargolithus abisectus Mid NP23 CP18 Top C11.2n to base C12r early Oligocene
85R-CC     Cyclicargolithus abisectus? Mid NP23 CP18 Top C11.2n to base C12r early Oligocene
  93R-CC 94R-4, 29–30 LO Reticulofenestra umbilicus NP22/23 CP16/17 Late C12r early Oligocene
94R-CC     Isthmolithus recurvus, Reticulofenestra umbilicus, Chiasmolithus oamaruensis present NP22–NP18 CP16c–CP15a Early C12r to C16n.2n late Eocene–early Oligocene

Notes: LO = last occurrence. O/M = Oligocene/Miocene.

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