Table of Contents
Paleomagnetic Standards Measurements
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Sample Name | Text ID | Declination | Inclination | Intensity (A/m) as provided (assumes 1cc) | Intensity (A/m) assuming 7cc volume | csd |
IODPSTD01 | CUBE11242251 | 217.4 | 33.9 | 3.17E-01 | 4.529E-02 | 0.9 |
IODPSTD02 | CUBE11242261 | 134.2 | 35.5 | 8.48E-02 | 1.211E-02 | 0.8 |
IODPSTD03 | CUBE11242271 | 143.5 | -29.1 | 9.40E-02 | 1.343E-02 | 1.3 |
IODPSTD04 | CUBE11242281 | 227.5 | -22 | 6.36E-02 | 9.086E-03 | 0.1 |
IODPSTD05 | CUBE11242291 | 18.9 | -24.9 | 9.09E-02 | 1.299E-02 | 0.4 |
IODPSTD06 | CUBE11242301 | 137.6 | 28.2 | 4.20E-01 | 6.00E-01 | 0.5 |
IODPSTD07 | CUBE11242311 | 326 | 34 | 5.86E-01 | 8.371E-02 | 0.7 |
IODPSTD08 | CUBE11242321 | 221.8 | -12.2 | 7.82E-02 | 1.117E-02 | 0.6 |
IODPSTD09 | CUBE11242331 | 34.7 | -28.4 | 1.13E-01 | 1.614E-02 | 1 |
IODPSTD10 | CUBE11242341 | 316.2 | -19.8 | 6.39E-02 | 9.129E-03 | 0.4 |
IODPSTD11 | CUBE11242351 | 333.3 | 24.3 | 9.78E-02 | 1.40E-02 | 1 |
IODPSTD12 | CUBE11242361 | 28.4 | 40.2 | 1.96E-01 | 2.80E-02 | 0.4 |
Standard Orientation
The Samples are oriented as if they were taken from an archive half. This means that the arrow etched into the cube points in the negative Z (i.e. towards the top of the core) on the ARCHIVE HALF SPLIT FACE (not the working half split face as a cube normally collected onboard would be). This can be confusing as most of the time, discrete samples would be collected from the working half. The arrow on the orange dot sticker points in the positive X direction of the IODP coordinate system. Be sure to keep this orientation in mind when loading into the instruments. See Figure 3 for sample orientation arrows
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Because the standards provided by Lisa Tauxe at Scripps were not designed to be used in the JR-6, 4 new standards were created which can be used in the JR-6. A strip of magnetic tape was glued to a stick which is secured inside a J-cube. The standards were then given an IRM and measured in the JR-6 followed by the SRM. These standards are oriented as if they were collected from a working half with an assumed volume of 7cc . Each standard was measured 20 times. The process included inserting and removing the standard between each measurement. The mean intensity was calculated as well as fischer stats for inclination and declination. See table below.
| Sample Name | TextID | Int (x10-3 A/m) | Stdev (x10-3 A/m) | Geo Dec (°) | Geo Inc (°) | κ | α95 (°) |
| IODPSTD13 | CUBE11242371 | 41.41 | 0.05 | 309.4 | -11.1 | 1197 | 0.9 |
| IODPSTD14 | CUBE11242381 | 47.75 | 0.06 | 329.0 | -33.0 | 565 | 1.4 |
| IODPSTD15 | CUBE11242391 | 27.43 | 0.04 | 263.2 | 31.5 | 354 | 1.8 |
| IODPSTD16 | CUBE11242401 | 14.91 | 0.03 | 274.0 | 34.6 | 4062 | 0.5 |
Table 2. IODP standards measurements in JR-6
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