Table T6. Summary of depths and estimated duration of unconformities, Hole 1183A.

Table T6. Summary of depths and estimated duration of unconformities, Hole 1183A.

Depth
(mbsf)

Core, section,
interval (cm)

Estimated age
(Ma)

Duration
(m.y.)

Stage/Epoch

419.56-422.40 R-4, 76 to 11R-6, 60 12.7(13.9)-(15.7)16.4 1.8-3.7 middle Miocene

757.14-761.98 15R-CC to 16R-CC 23.80-27.50 3.70 upper Oligocene

924.4-927.36 33R-1, 10 to 33R-3,10 49.70-50.60 0.90 middle/lower Eocene boundary

982.37-985.00 39R-1, 37 to 39R-3, 125 61.0-64.80 3.80 upper/lower Paleocene

987.33-987.40 39R-4, 87 to 39R-4, 100 65.0-68.2 3.20 Cretaceous/Paleogene boundary

1031.28-1040.56 44R-CC to 45R-1, 56 69.73-70.07 0.34 upper/lower Maastrichtian

1050.50-1051.22 46R-1, 100 to 46R-2, 22 72.70-74.00 1.30 upper Campanian

1089.90-1090.05 50R-2,20 to 50R-2, 35 83.17-83.90 0.63 Campanian/Santonian boundary

1090.44-1090.48 50R-2, 74 to 50R-2, 78 86.50-99.75 13.25 upper Coniacian/upper Albian

1110.05-1111.57 52R-2, 105 to 52R-3, 107 100.5-111.1 10.60 upper/lower Albian

1128.61-1128.64 54R-2, 31 to 54R-2, 35 116.2-116.75 0.55 upper Aptian

Depth (mbsf)	Core, section, interval (cm)	Estimated age (Ma)	Duration (m.y.)	Stage/Epoch
419.56-422.40	R-4, 76 to 11R-6, 60	12.7(13.9)-(15.7)16.4	1.8-3.7	middle Miocene
757.14-761.98	15R-CC to 16R-CC	23.80-27.50	3.70	upper Oligocene
924.4-927.36	33R-1, 10 to 33R-3,10	49.70-50.60	0.90	middle/lower Eocene boundary
982.37-985.00	39R-1, 37 to 39R-3, 125	61.0-64.80	3.80	upper/lower Paleocene
987.33-987.40	39R-4, 87 to 39R-4, 100	65.0-68.2	3.20	Cretaceous/Paleogene boundary
1031.28-1040.56	44R-CC to 45R-1, 56	69.73-70.07	0.34	upper/lower Maastrichtian
1050.50-1051.22	46R-1, 100 to 46R-2, 22	72.70-74.00	1.30	upper Campanian
1089.90-1090.05	50R-2,20 to 50R-2, 35	83.17-83.90	0.63	Campanian/Santonian boundary
1090.44-1090.48	50R-2, 74 to 50R-2, 78	86.50-99.75	13.25	upper Coniacian/upper Albian
1110.05-1111.57	52R-2, 105 to 52R-3, 107	100.5-111.1	10.60	upper/lower Albian
1128.61-1128.64	54R-2, 31 to 54R-2, 35	116.2-116.75	0.55	upper Aptian

Notes: Ages in parentheses indicate an apparent discrepancy between calcareous nannofossil and planktonic foraminifer datums. This table is also available in ASCII format.