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

Fig. 4

From: Paleomagnetic direction and paleointensity variations during the Matuyama–Brunhes polarity transition from a marine succession in the Chiba composite section of the Boso Peninsula, central Japan

Fig. 4

a Examples of the thermomagnetic analyses conducted from 100 to 700 °C in air (upper) and in a vacuum (lower). Arrows represent heating and cooling. b Progressive thermal demagnetization of the three-component IRMs (0.03, 0.5, and 1.5 T) in air (upper) and in a vacuum (lower). The sample used for those diagrams is TBH31

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