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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

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. 4

a High-temperature susceptibility (lower diagram) of bulk sample (157.5 mg) for Unit 1 (0–10 mm from surface) representing heating (red dots) and cooling (blue dots) with spline smoothed curves (red and blue curves are for heating and cooling, respectively) with a derivative of the heating curve indicating a sharp drop at 573 °C (upper diagram). b Thermal demagnetization of orthogonal IRM based on Lowrie (1990) for a chip sample (20.4 mg) taken from Unit 1 (0–10 mm from surface). X (0.3–2.5 T), Y (0.1–0.3 T), and Z (0–0.1 T) axes are shown in purple, red, and blue, respectively

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