Magnetic susceptibility of surficial sediments from the Strait of Magellan

Magnetic susceptibility (MS) was measured on the bulk samples (MSmv) and on the following three size fractions: gravel (MSg), sand (MSs) and mud (MSf). There is a direct correlation between MSmv on the one side, and MSg and MSs on the other; the MS of the sand and gravel fractions probably determine the bulk average. Furthermore, MS decreases with increase in mud content of the sediment. The MSmv, MSg and MSs values are independent of the depth of sampling; this is due to the change in texture of the sediments, which is controlled by the complex fluid-dynamics of the currents in the Strait. -from Authors