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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Characterization of marine ferromanganese crust from the Pacific using residues of selective chemical leaching: identification of fossil magnetotactic bacteria with FE-SEM and rock magnetic methods

Fig. 5

a Hysteresis loops and parameters for a bulk sample (10.9 mg) taken at 0–10 mm from the surface. b FORC diagram for the same sample (Bu = − 40 mT ~ + 40 mT, Bc = 0 ~ 150 mT, average time = 100 ms). c A closed-up of FORC diagram along the central ridge (Bu = − 5 ~ + 5 mT, Bc = 0 ~ 60 mT, average time = 100 ms) and cross sections d along horizontal line at Bu = 0.5 mT and e along vertical line at Bu = 31 mT. f Hysteresis loops and parameters for the residue after chemical leaching and magnetic extraction (2.3 mg) for a sample taken at 0–10 mm from the surface. g FORC diagram for the same sample (Bu = − 40 mT ~ + 40 mT, Bc = 0 ~ 150 mT, averaging time = 100 ms). h A closed-up of FORC diagram along the central ridge (Bu = − 5 ~ + 5 mT, Bc = 0 ~ 60 mT, average time = 200 ms) and cross sections i along horizontal line at Bu = 0.5 mT and j along vertical line at Bu = 33 mT

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