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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).

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