|
Solvent
|
Coarse fraction (weight %)
|
||
|---|---|---|---|
|
Before sonication
|
After sonication
|
After overnight soak
|
|
| Sample 207-1259C-11R-4, 130–150 cm (Santonian) |
|
|
|
| Calgon-peroxide | 44.7 | 11.8 | 3.6 |
| 100% bleach | 5.9 | NA* | NA |
| Sample 207-1259C-17R-1, 116–136 cm (Turonian) |
|
|
|
| Calgon-peroxide | 66.9 | 45.5 | 32.4† |
| 100% bleach | 12.1 | NA | NA |
Notes: * = No further cleaning steps were needed after the 2-hr and 1-hr soaks. † = Very few foraminifers remained at this point.