...
The QAQC Text_ID created for IODPSTD01 to IODPSTD12 considers the samples as they were taken from the WORKING HALF. Put the sample upside down in the discrete tray in the position WTA, top away (arrow of the cube away from the SRM) and +X down.
| Sample Name | Text ID | Declination | Inclination | Intensity (A/m) assuming 7 cc volume | |
|---|---|---|---|---|---|
| IODPSTD01 | CUBE11242251 | 209.5 | 34.1 | 4.27E-02 | |
| IODPSTD02 | CUBE11242261 | 143.8 | 25.9 | 1.45E-02 | |
| IODPSTD03 | CUBE11242271 | 147.5 | -23 | 1.69E-02 | |
| IODPSTD04 | CUBE11242281 | 209.8 | -14.4 | 1.01E-02 | |
| IODPSTD05 | CUBE11242291 | 10.6 | -51.1 | 7.31E-03 | |
| IODPSTD06 | CUBE11242301 | 132 | 27.6 | 6.03E-02 | |
| IODPSTD07 | CUBE11242311 | 310.2 | 34.5 | 7.44E-02 | |
| IODPSTD08 | CUBE11242321 | 211.6 | -11.8 | 1.08E-02 | |
| IODPSTD09 | CUBE11242331 | 31 | -30.6 | 1.38E-02 | |
| IODPSTD10 | CUBE11242341 | 303.7 | -12.7 | 8.22E-03 | |
| IODPSTD11 | CUBE11242351 | 321.2 | 31.3 | 1.34E-02 | |
| IODPSTD12 | CUBE11242361 | 14.9 | 48.3 | 2.52E-02 |
Table 2. IODP Standards created by Scripps measured with the SRM onboard the JR. Declination, inclination and intensity are corrected from background and drift (April 18, 2022). Volume is 7 cc.
...
Table 2. IODP standards measurements in JR-6
Measuring in the SRM (TO UPDATE)
When measuring the standards in the SRM, install the discrete sample tray and set up your measurement preset to reflect a discrete J-Cube collected from the archive half. For sample shape select Discrete J-Cube. Face orientation should be Top and the Arrow Orientation (-Z) should be set to Away. Be sure to select Archive Half under From Section. In Dimensions, set the sample area to 1.0 cm2. Although this says sample area and the unit is an area unit, we are telling IMS what the volume of the J-cube is (i.e. 1.0 cm3). Name your measurement preset something useful such as Discrete Archive. More information on setting up a sample preset can be found in the SRM user guide.
...
Figure 4 Measurements Preset Editor for Archive Half J-Cube
Run a discrete tray background then load the standards into the discrete sample tray as shown in Figure 5. As with typical discrete measurements, load the first standard into the 13 cm offset position and leave a blank position between each standard cube (i.e. load standards into positions 13 cm, 33 cm, 53 cm…). The standard cube should be oriented so that the –Z arrow is pointing away from the SRM and the +X arrow is pointing up.
...
This next step is very important!!! In the measurement sequence tab, select a measurement sequence that measures NRM only. Do not select a sequence that demagnetizes the samples first or they will be ruined and worthless. The Current Sequence box at the bottom of the screen should have a sequence such as NRM only.
Use the manual tab to enter the name of the standard cube, click use me, then double click on the tray position this cube is sitting in to assign their positions. Once all standards cubes are assigned to their position, click Measure.
When the measurements are complete, the data will go to the In folder and can then be uploaded to LORE.
Measuring In the JR6
Do not measure the standards created at Scripps (IODPSTD01 through IODPSTD12) in the JR6. Load the standard into the automatic sample holder with the up arrow that is etched into the cube body facing up and to the left, as shown in figure 7. Be sure that sample type is set to cube in instrument configurations. Use a volume of 7cc. Use 0 for the azimuth and 90 for the dip. With these settings, you will look at the geographic inclination and declination (not specimen coordinates).
...