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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: New absolute paleomagnetic intensity data from Cenozoic basalts of Northeast China and exploring rock-magnetic parameters for efficient sample preselection on the Tsunakawa–Shaw paleointensity method

Fig. 2

Summary of results of the magnetic hysteresis properties from Vibrating Sample Magnetometer measurements of the NE China basalts. a Hysteresis loops (raw and corrected) and back-field curve for a representative sample (14222-F). The determined Bc, Bcr, Bcr/Bc, and Mrs/Ms values are given. b Biplot of Mrs/Ms vs. Bcr/Bc (the so-called Day plot) in logarithmic space for the NE China basalt samples. Each circle symbol corresponds to the result from each block sample. The circles with the same color represent the results of samples from the same site. The diamond or cross symbol inscribed in each circle symbol indicates the “success” or “failure” Tsunakawa–Shaw (TS) absolute paleomagnetic field intensity (API) determination (Table 3), respectively. The theoretical curves for the mixtures of single-domain (SD) and multi-domain (MD) particles (three gray long-dashed lines) and SD and SP (10 nm in size) particles (two gray solid lines). The boundaries for the SD and pseudo-SD (PSD) regions suggested by Dunlop (2002a, b), and the bulk domain stability (BDS) trend line (pink solid line) with labels of some BDS values (diamond symbols) suggested by Paterson et al. (2017) are also shown. For the five data points with the sample labeling, the corresponding First-order reversal curve diagrams are provided in Additional file 2: Figure S1

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