Table T7. Depths and ages of faunal, floral, and paleomagnetic criteria used to establish the chronology of Site 1139 and to calculate the sedimentation rates (Shipboard Scientific Party, 2000).

Table T7. Depths and ages of faunal, floral, and paleomagnetic criteria used to establish the chronology of Site 1139 and to calculate the sedimentation rates (Shipboard Scientific Party, 2000).


Core, section, interval (cm)	Datum	Type	Age (Ma)	Depth (mbsf)	Age
3R-CC	CN5a/CN3	Nannofossil	15-16	24	early middle Miocene
8R-CC	CN2-CN1	Nannofossil			mid-early Miocene
19R-CC	LO Reticulofenestra bisecta	Nannofossil	24	179.75	latest Oligocene
21R-CC	LO Zygrhablithus bijugatus	Nannofossil	26.2	200.25	late Oligocene
30R-CC	AP15-AP16	Foraminifer	28.5	275.45	late Oligocene
34R-CC	AP14	Foraminifer			"mid"-Oligocene
40R-6, 20-22	Above lower CP18	Nannofossil	<31	381.5	<early early Oligocene
40R-6, 89-91	Below CP16c	Nannofossil	>32.8	382.2	>late early Oligocene
40R-CC	CP16a/b	Nannofossil	32.8-34.3	384	Eocene-Oligocene

Notes: Age estimates of datum events are based on the timescale of Berggren et al., 1995. LO = last occurrence.