Ocean

Regions

Accumulation Rate

Relative

Magnitude

Iron $\left(\text{dFe}/\text{dt}\right)$

Sulfur $\left(\text{dS}/\text{dt}\right)$

$\frac{\left(\text{dS}-\text{dFe}\right)}{\text{dt}}$

LC

LNLC

−

++

++

$0>\frac{\text{dFe}}{\text{dt}}\ll \frac{\text{dS}}{\text{dt}}\gg 0$

HNHC

+

++

+

$0>\frac{\text{dFe}}{\text{dt}}<\frac{\text{dS}}{\text{dt}}\gg 0$

HC

LNHC

++

+

−

$0\ll \frac{\text{dFe}}{\text{dt}}>\frac{\text{dS}}{\text{dt}}>0$

HNHC

++

−

−−

$0\ll \frac{\text{dFe}}{\text{dt}}\gg \frac{\text{dS}}{\text{dt}}<0$