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Fig. 10 (a) - (d). Central equatorial Atlantic core GeoB 1505-2. Partial susceptibilities Kmd, Ksd, Ks p and Khe estimated
by multiple linear regression analysis of three magnetite grain-size selective parameters, Mir M",., Kfd and the hematite
selective parameter M hir . The calibrations denoted above each plot depend on the average magnetomineralogical
composition and magnetite grain-size distribution of the individual sediment sequence and cannot be generalized.
To make the coefficients dimensionless, all remanence terms were divided by a unit magnetization 110 of 1 AIm.
The scaling is identical for all four diagrams. Because K is approximately grain-size independent for magnetite, the
Ksp, Ksd, and Kmd records can be quantitatively compared. The specific susceptibility of hematite is about 111000
that of magnetite. The Khe log therefore represents a proportionally much higher mineral concentration, but probably
also associated paramagnetism. (e) SPECMAP oxygen isotope stack (Imbrie et al. 1984).