Table T2. Lithostratigraphic units and subunits, Site 1260.
Unit/
Subunit
Hole, core, section,
interval (cm)
Depth
(mbsf)
Thickness
(mbsf)
Age
Lithology

207-



I 1260A-1R-1, 0, through 2R-1, 10* 0–1.10 1.10 Pleistocene Nannofossils clay
IIA 1260A-2R-1, 10, through 5R-CC, 12* 1.10–36.03 34.93 early Oligocene Foraminifers and nannofossils ooze; foraminifers and nannofossils chalk
IIB 1260A-5R-CC, 12, through 20R-3, 781260B-1R-1, 0 through 11R-CC, 25 36.03–176.5840.2–>135.61 140.55>95.41 middle Eocene Nannofossils and radiolarian chalk; nannofossils chalk with foraminifers and radiolarian
IIC 1260A-20R-3, 78, through 30R-7, 74<1260B-12R-1, 0, through 17R-7, 69 176.58–276.74<235–279.84 100.16>44.84 middle Eocene–early Eocene Nannofossils chalk with clay and foraminifers
IIIA 1260A-30R-7, 74, through 35R-5, 931260B-17R-7, 69, through 22R-3, 145 276.74–324.03279.84–323.55 47.2943.71 Paleocene Nannofossils chalk with foraminifers and calcite; clayey nannofossils chalk with foraminifers and calcite
IIIB 1260A-35R-5, 93, through 41R-3, 1251260B-22R-3, 145, through 28R-2, 145 324.03–379.15323.55–379.85 55.1256.30 Maastrichtian–late Campanian Nannofossils chalk with foraminifers and calcite; clayey nannofossils chalk with foraminifers and calcite
IIIC 1260A-41R-3, 125, through 42R-CC, 151260B-28R-2, 145, through 30R-CC, 8 379.15–390.65379.85–390.83 11.5010.98 early Campanian Nannofossils chalk with foraminifers and calcite; clayey nannofossils chalk with foraminifers and calcite
IV 1260A-42R-CC, 15, through 53R-2, 421260B-30R-CC, 8, through 42R-2, 1 390.65–483.22390.83–483.59 92.5792.76 Santonian–middle Cenomanian Calcareous claystone with organic matter; clayey chalk with organic matter; limestone
V 1260A-53R-2, 42, through 54R-CC, 21260B-42R-2, 1, through 46R-CC, 32 483.22–491.90483.59–507.37 8.6823.78 middle–late Albian Clayey limestone with quartz; calcareous claystone with quartz

Note: * = not recovered from Hole 1260B.