Table 1 Calculated grain boundary diffusion coefficients.

From: Rapid grain boundary diffusion in foraminifera tests biases paleotemperature records

Temp. (°C)

Lslope (cm•s−0.5) (2.0 m2/g)

Lslope (cm•s−0.5) (0.086 m2/g)

DGB (cm2 s-1) (2.0 m2/g)

DGB (cm2 s-1) (0.086 m2/g)

ln(DGB) (2.0 m2/g)

30

(4.451 ± 0.243) × 10−11

(1.035 ± 0.057) × 10−9

(1.981 ± 0.108) × 10−21

(1.072 ± 0.059) × 10−18

−47.671 ± 0.055

50

(7.933 ± 0.636) × 10−11

(1.845 ± 0.148) × 10−9

(6.293 ± 0.504) × 10−21

(3.404 ± 0.273) × 10−18

−46.515 ± 0.080

90

(1.998 ± 0.092) × 10−10

(4.647 ± 0.215) × 10−9

(3.994 ± 0.184) × 10−20

(2.160 ± 0.100) × 10−17

−44.667 ± 0.046

190

(1.040 ± 0.083) × 10−9

(2.419 ± 0.194) × 10−8

(1.082 ± 0.087) × 10−18

(5.851 ± 0.469) × 10−16

−41.368 ± 0.080

  1. Grain boundary diffusion coefficients (DGB) are calculated from the slopes of the diffusive length scale of the system (Lslope) using a specific surface area of 0.08614 and 2 m2/g75. Since the activation energy is calculated from the slope of the ln(DGB) values, either surface area can be used to calculate ln(DGB) without any change to the activation energy.
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