Table T4. Lithostratigraphic subdivisions, Site 1263.
Unit/
subunit
Unit boundary depth (mcd)
Hole 1263A
Hole 1263B
Hole 1263C
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Top
Base
Top
Base
Top
Base
Top
Base
Top
Base
Top
Base
Top
Base
Top
Base
Top
Base
IA
1H-1 10H-6 0.0 87.3 0.0 99.1 1H-1 5H-1, 40 46.0 84.4 53.3 99.1

99.1

















IB
10H-7 31H-CC 87.3 271.6 99.1 318.0 5H-1, 40 26X-CC 84.4 271.6 99.1 315.7 1H-1 12H-7, 50 90.0 272.6 103.1 318.0

318.0

















IC (400.7)* 32H-1 40X-CC 271.6 340.12 318.0 400.7 27X-1 33X-CC 271.1 337.1 318.5 396.6 12H-7, 50 16X-CC 272.6 289.1 318.0 339.9

Notes: Bold intervals and depths define the unit boundaries; other intervals are recognized as part of units but do not contain the unit boundaries. — = lithostratigraphic unit not recovered. * = base of cored unit.

Unit/subunit
Unit boundary depth (mcd)
Hole 1262D
Description
Core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Top
Base
Top
Base
Top
Base
IA
Foraminifer-bearing nannofossil ooze, nannofossil ooze

99.1






IB
Nannofossil ooze, clay-bearing nannofossil ooze, chalky nannofossil ooze, foraminifer-bearing nannofossil ooze

318.0






IC (400.7)* 1H-1 4H-CC 272.0 286.6 318.5 337.3 Nannofossil ooze, chalky nannofossil ooze