Table T2. Summary of rock magnetic properties of Expedition 316 samples considered for this study.
Core, section, Interval (cm) | Depth (mbsf)* | Rock type | Tc (°C) | Tv (K) | Hc (mT) | Hcr (mT) | Hcr/Hc | Js (µAm2/kg) | Jr (µAm2/kg) | Jr/Js | |
---|---|---|---|---|---|---|---|---|---|---|---|
[Tc1, Tc2] (Kappabridge) | [Tc1, Tc2] (MicroVSM) | ||||||||||
316-C0004D- | |||||||||||
27R-2, 35–37 | 266.76 | Green-gray silty claystone | 5.274 | 33.13 | 6.2817595753 | 1.422 | 0.0086 | 0.006 | |||
28R-3, 7–9 | 272.39 | Green-gray silty claystone | 390, 580 | 125? | 10.09 | 73.45 | 7.2794846383 | 1.156 | 0.017 | 0.015 | |
28R-3, 8–10 | 272.4 | Green-gray silty claystone | 310, 580 | ||||||||
29R-2, 11–13 | 275.505 | Green-gray silty claystone | 9.618 | 32.69 | 3.3988355167 | 1.501 | 0.02 | 0.014 | |||
30R-1, 124–126 | 279.74 | Brecciated silty claystone | 340, 575 | 368, 590 | 121 | 6.081 | 41.33 | 6.7965795099 | 0.605 | 0.003 | 0.0005 |
52R-2, 5–7 | 378.95 | Olive-gray silty claystone | 362, 595 | ||||||||
53R-2, 31–33 | 383.715 | Olive-gray silty claystone | 350, 550 | ||||||||
316-C0006E- | |||||||||||
17X-2, 24–26 | 99.98 | Dark gray sandstone | 2.115 | 37.03 | 17.5082742317 | 1.54 | 0.0039 | 0.002 | |||
34X-2, 66–68 | 260.4 | Olive-gray silty claystone | 570 | ||||||||
35X-1, 52–54 | 268.35 | Dark olive silty claystone | 379, 580 | 10.85 | 34.66 | 3.1944700461 | 8.555 | 0.717 | 0.08 | ||
39X-7, 36–38 | 313.245 | Siltstone | 590 | 7.164 | 24.99 | 3.4882747069 | 12.07 | 0.665 | 0.06 | ||
39X-8, 36–38 | 314.655 | Olive-gray silty claystone | 340, 580 | 24.8 | 34.1 | 1.375 | 2.31 | 7.53 | 0.307 | ||
40X-1, 28–30 | 315.61 | Gray silty claystone | 358, 585 | 7.946 | 22.47 | 2.8278379059 | 4.418 | 0.244 | 0.06 | ||
43X-7, 104–106 | 351.945 | Green-gray claystone | 325, 575 | ||||||||
44X-6, 24–26 | 359.61 | Olive-gray silty claystone | 357, 588 | 130 | 11.37 | 34.61 | 3.0439753738 | 5.435 | 0.559 | 0.1 | |
44X-8, 76–78 | 362.59 | Olive-gray silty claystone | 11.51 | 23.93 | 2.0790616855 | 1.841 | 0.192 | 0.1 | |||
44X-cc, 11–13 | 362.995 | Olive-gray silty claystone | 370, 590 | 8.615 | 40.11 | 4.6558328497 | 4.96 | 0.279 | 0.056 | ||
316-C0006F- | |||||||||||
4R-1, 24–26 | 423.74 | Greenish gray silty claystone | 585 | ||||||||
12R-1, 127–129 | 496.27 | Greenish gray silty claystone | 290, 580 | ||||||||
16R-1, 32–34 | 533.32 | Greenish gray silty claystone | 370, 579 | 3.04 | 38.23 | 12.5756578947 | 0.657 | 0.027 | 0.004 | ||
17R-2, 24–26 | 544.115 | Bioturbated silty claystone | 2.115 | 37.03 | 17.5082742317 | 1.54 | 0.0039 | 0.002 | |||
23R-1, 64–66 | 594.14 | Greenish gray silty claystone | 400, 585 | ||||||||
316-C0007C- | |||||||||||
1H-3, 47–49 | 14.755 | Dark gray sandstone | 280, 550 | ||||||||
1H-6, 62–64 | 17.74 | Green-gray silty claystone | 582 | ||||||||
5X-cc, 5–7 | 43.24 | Gray sandstone | 170, 580 | ||||||||
9X-4, 55–57 | 85.855 | Green-gray fine sandstone | 310, 581 | ||||||||
14X-cc, 25–27 | 130.48 | Olive-gray silty claystone | 302, 575 | ||||||||
316-C0007D- | |||||||||||
15R-2, 25–27 | 305.155 | Olive-gray silty claystone | 330, 600 | 120 | 9.585 | 36.14 | 3.7704747001 | 5.043 | 0.396 | 0.078 | |
24R-2, 126–128 | 391.67 | Fine-grained sandstone | 142, 580 | ||||||||
24R-4, 6–8 | 393.31 | Fine-grained sandstone | 140, 575 | ||||||||
25R-3, 48–50 | 401.845 | Greenish gray silty claystone | 160, 588 | ||||||||
29R-2, 86–88 | 438.765 | Greenish gray silty claystone | 119, 560 | ||||||||
316-C0008C- | |||||||||||
12H-1, 61–63 | 90.72 | Silty claystone | 583 |
* = Distances from core top, not depth. Rock types are from Expedition 316 visual core descriptions; see text for references. Tc = Curie temperature (Tc1, Tc2 = low and high Curie temperature, respectively). Tv = Verwey transition temperature. Hysteresis ratios are usually divided into regions: single domain (SD) for Js/Jr > 0.5 and Hcr/Hc < 1.5, multidomain (MD) for Js/Jr < 0.05 and Hcr/Hc > 4, and pseudosingle domain (PSD) in between (Dunlop, 2002).
Previous | Close | Top of page