Figure 14. Massive or poorly laminated, sharp-based fine sandstone (1) occurs beneath a bioturbated, positively graded and upward-lightening sequence (Lu). The transition from sandstone bed to bioturbated nannofossil claystone at the top (3) takes place through an interval of bioturbated nannofossil claystone having lenses and mottles of silt (2); a similar interval occurs at 132.5 cm. Note horizontal Zoophycos (at 148 cm) in nannofossil clay (3) and overlying sandstone with sharp base and top. These sequences have been interpreted as contourite deposits (Subunit IIB, Interval 149-898A-33X-5, 130-150 cm).

Figure 14. Massive or poorly laminated, sharp-based fine sandstone (1) occurs beneath a bioturbated, positively graded and upward-lightening sequence (Lu). The transition from sandstone bed to bioturbated nannofossil claystone at the top (3) takes place through an interval of bioturbated nannofossil claystone having lenses and mottles of silt (2); a similar interval occurs at 132.5 cm. Note horizontal Zoophycos (at 148 cm) in nannofossil clay (3) and overlying sandstone with sharp base and top. These sequences have been interpreted as contourite deposits (Subunit IIB, Interval 149-898A-33X-5, 130-150 cm).