| |
|
|
|
CORE
EXTRUDING AND SECTIONING
|
|
Materials Required:
|
 |
| Remove the remaining overlying water with a syringe. |  |
|
Extrude the sediment until the lowest point on the surface is at the top of the core barrel. Measure the amount of surface relief from the lowest to the highest point of the exposed core. |
 |
| Secure a tape measure to the side of the core barrel and record the lowest point on the piston in centimeters. |  |
| Describe and record the surface sediment using the color chart. |  |
| Use the hydraulic jack to extrude the desired amount of sediment up from the core tube that you wish to section. |  |
| Monitor the piston movement relative to the tape measure and record the lowest point on the piston in centimeters. |  |
|
Tare an empty container on the balance.
|
 |
|
Using a titanium spatula, trim the edge of the sediment into the container. Record the weight of the trimmings from the balance. |
 |
|
Describe, record, and remove biota from exposed core. |
 |
|
Use the titanium spatula to sample the remaining sediment into labeled sample containers. *You may need to follow the surface slope for the first few intervals, depending on the amount of surface relief. |
 |
| Homogenize the sample in the sample container using the same titanium spatula from which you sampled that level of the core. |  |
| Make the required aliquots and record the weights from the balance. |  |
| Using vice grips with taped jaws, crimp the hinges of the aliquot vials to ensure proper closure. |  |
| Place bulk samples in the freezer or the refrigerator. |  |
| Place texture and c. perf aliquots in the refrigerator. |  |
|
Record data in the log book. For each core level sampling, use a clean titanium spatula and repeat steps above. |
 |
Return
to Methods Procedures |
Return
to Index |